/* ═══════════════════════════════════════════════════════════════════════════
   qScontrino - Soft Terminal Design System
   A warm, premium POS interface with Mediterranean character
   ═══════════════════════════════════════════════════════════════════════════ */

/* ─────────────────────────────────────────────────────────────────────────────
   CSS Custom Properties - Design Tokens
   ───────────────────────────────────────────────────────────────────────────── */
:root {
  /* Primary Palette - Warm Mediterranean */
  --color-primary: #4DB6AC;
  --color-primary-dark: #00897B;
  --color-primary-light: #80CBC4;
  --color-primary-subtle: rgba(77, 182, 172, 0.1);

  /* Secondary - Professional Navy */
  --color-secondary: #37474F;
  --color-secondary-dark: #263238;
  --color-secondary-light: #546E7A;

  /* Accent Colors */
  --color-success: #66BB6A;
  --color-success-dark: #43A047;
  --color-success-light: #A5D6A7;
  --color-danger: #EF5350;
  --color-warning: #FFA726;
  --color-info: #42A5F5;

  /* Neutrals - Warm Tones */
  --color-bg-primary: #F5F5F5;
  --color-bg-secondary: #FAFAFA;
  --color-bg-tertiary: #EEEEEE;
  --color-surface: #FFFFFF;
  --color-surface-elevated: #FFFFFF;

  /* Text Colors */
  --color-text-primary: #212121;
  --color-text-secondary: #757575;
  --color-text-tertiary: #9E9E9E;
  --color-text-inverse: #FFFFFF;

  /* Borders & Dividers */
  --color-border: rgba(55, 71, 79, 0.12);
  --color-border-strong: rgba(55, 71, 79, 0.2);
  --color-divider: rgba(55, 71, 79, 0.08);

  /* Shadows - Soft & Layered */
  --shadow-xs: 0 1px 2px rgba(55, 71, 79, 0.04);
  --shadow-sm: 0 2px 4px rgba(55, 71, 79, 0.06), 0 1px 2px rgba(55, 71, 79, 0.04);
  --shadow-md: 0 4px 12px rgba(55, 71, 79, 0.08), 0 2px 4px rgba(55, 71, 79, 0.04);
  --shadow-lg: 0 8px 24px rgba(55, 71, 79, 0.1), 0 4px 8px rgba(55, 71, 79, 0.06);
  --shadow-xl: 0 16px 48px rgba(55, 71, 79, 0.12), 0 8px 16px rgba(55, 71, 79, 0.08);
  --shadow-display: 0 20px 60px rgba(55, 71, 79, 0.15), 0 8px 24px rgba(77, 182, 172, 0.1);

  /* Typography Scale */
  --font-display: 'DM Serif Display', Georgia, serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', Consolas, monospace;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 2rem;
  --text-4xl: 2.5rem;
  --text-5xl: 3.5rem;

  /* Spacing Scale */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;

  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --radius-2xl: 28px;
  --radius-full: 9999px;

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --duration-slow: 400ms;
}

/* ─────────────────────────────────────────────────────────────────────────────
   Reset & Base Styles
   ───────────────────────────────────────────────────────────────────────────── */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

html, body {
  height: 100%;
  font-family: var(--font-body);
  background: var(--color-bg-primary);
  color: var(--color-text-primary);
  overflow: hidden;
  overscroll-behavior: none; /* W2: prevent pull-to-refresh in standalone PWA */
}

/* Subtle texture overlay for depth */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
  opacity: 0.015;
  pointer-events: none;
  z-index: 0;
}

/* ─────────────────────────────────────────────────────────────────────────────
   Main App Container
   ───────────────────────────────────────────────────────────────────────────── */
.app-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
  height: 100dvh;
  padding: var(--space-4);
  padding-top: max(var(--space-4), env(safe-area-inset-top));
  padding-bottom: max(var(--space-4), env(safe-area-inset-bottom));
  padding-left: max(var(--space-4), env(safe-area-inset-left));
  padding-right: max(var(--space-4), env(safe-area-inset-right));
  gap: var(--space-3);
  overflow: hidden;
  position: relative;
  z-index: 1;
  max-width: 1400px;
  margin: 0 auto;
}

/* ─────────────────────────────────────────────────────────────────────────────
   Header
   ───────────────────────────────────────────────────────────────────────────── */
.header {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  flex-shrink: 0;
  position: relative;
  overflow: hidden;
}

/* Decorative accent line */
.header::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
  border-radius: var(--radius-full);
}

.logo-container {
  display: flex;
  justify-content: center;
  align-items: center;
}

.app-logo {
  height: 44px;
  width: auto;
  max-width: 200px;
  object-fit: contain;
  transition: transform var(--duration-normal) var(--ease-out);
}

.app-logo:hover {
  transform: scale(1.02);
}

.header h1 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 400;
  color: var(--color-secondary);
  letter-spacing: -0.02em;
}

/* ─────────────────────────────────────────────────────────────────────────────
   Display Panel - The Hero Element
   ───────────────────────────────────────────────────────────────────────────── */
.container {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  min-height: 0;
  overflow: hidden;
}

.display {
  background: linear-gradient(145deg, #00897B, #00695C);
  border-radius: var(--radius-2xl);
  padding: var(--space-6) var(--space-8);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: stretch;
  flex-shrink: 0;
  min-height: 140px;
  position: relative;
  overflow: hidden;
  cursor: pointer;
  transition: transform var(--duration-normal) var(--ease-out),
              box-shadow var(--duration-normal) var(--ease-out);
  box-shadow: var(--shadow-display);
}

/* Glass reflection effect */
.display::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 50%;
  background: linear-gradient(180deg,
    rgba(255, 255, 255, 0.08) 0%,
    rgba(255, 255, 255, 0) 100%);
  pointer-events: none;
}

/* Warm accent glow */
.display::after {
  content: '';
  position: absolute;
  bottom: -20px;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  height: 40px;
  background: radial-gradient(ellipse, rgba(77, 182, 172, 0.3) 0%, transparent 70%);
  pointer-events: none;
}

.display:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl), 0 0 40px rgba(77, 182, 172, 0.15);
}

.display:active {
  transform: translateY(0);
}

.display-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  width: 100%;
  position: relative;
  z-index: 1;
}

.settings-gear {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  width: 44px;
  height: 44px;
  border: none;
  background: rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.7);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-base);
  backdrop-filter: blur(8px);
  z-index: 2;
  -webkit-tap-highlight-color: transparent;
}

.settings-gear:hover {
  background: rgba(255, 255, 255, 0.2);
  color: var(--color-text-inverse);
  transform: rotate(90deg);
}

.line {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.line-label {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: var(--text-sm);
  box-shadow: 0 2px 8px rgba(77, 182, 172, 0.3);
}

.line-value {
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: 500;
  color: rgba(255, 255, 255, 0.7);
  letter-spacing: 0.05em;
}

.total {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  justify-content: flex-end;
}

.currency {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  color: var(--color-primary-light);
  opacity: 0.9;
}

.amount {
  font-family: var(--font-mono);
  font-size: var(--text-5xl);
  font-weight: 700;
  color: var(--color-text-inverse);
  letter-spacing: 0.02em;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}

.toggle-hint {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--color-primary-light);
  margin-left: var(--space-3);
  padding: var(--space-1) var(--space-2);
  background: rgba(77, 182, 172, 0.2);
  border-radius: var(--radius-sm);
  font-weight: 500;
  transition: all var(--duration-fast) var(--ease-out);
}

.display:hover .toggle-hint {
  background: rgba(77, 182, 172, 0.3);
}

/* ─────────────────────────────────────────────────────────────────────────────
   Top Bar
   ───────────────────────────────────────────────────────────────────────────── */
.top-bar {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

.btn-products {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border: none;
  border-radius: var(--radius-lg);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
  box-shadow: var(--shadow-sm), 0 2px 8px rgba(77, 182, 172, 0.2);
  flex-shrink: 0;
}

.btn-products:hover {
  background: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md), 0 4px 12px rgba(77, 182, 172, 0.25);
}

.btn-products:active {
  transform: translateY(0);
}

.product-icon {
  width: 24px;
  height: 24px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}

.cart-counter {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: all var(--duration-fast) var(--ease-out);
}

.cart-counter:not(:empty) {
  background: var(--color-primary-subtle);
  border-color: var(--color-primary);
  color: var(--color-primary-dark);
}

.lottery-indicator {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  background: var(--color-success);
  color: var(--color-text-inverse);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
}

/* ─────────────────────────────────────────────────────────────────────────────
   Main Content Area
   ───────────────────────────────────────────────────────────────────────────── */
.main-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

/* ─────────────────────────────────────────────────────────────────────────────
   Items List Panel (Right)
   ───────────────────────────────────────────────────────────────────────────── */
.right {
  width: 100%;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-4);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
  order: 1;
  max-height: 200px;
  display: none;
  transition: all var(--duration-normal) var(--ease-out);
  flex-shrink: 0;
  box-shadow: var(--shadow-sm);
}

.right.show {
  display: block;
  animation: slideDown var(--duration-normal) var(--ease-out);
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Items Table */
.items {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}

.items th {
  background: var(--color-bg-tertiary);
  padding: var(--space-2) var(--space-3);
  text-align: left;
  font-weight: 600;
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-sm);
}

.items th:first-child {
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
}

.items th:last-child {
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.items td {
  padding: var(--space-3);
  border-bottom: 1px solid var(--color-divider);
  transition: background var(--duration-fast);
}

.items tr:hover td {
  background: var(--color-bg-primary);
}

.items tr:last-child td {
  border-bottom: none;
}

.text-center { text-align: center !important; }
.text-right { text-align: right !important; }
.font-semibold { font-weight: 600 !important; }

.product-name {
  font-weight: 600;
  color: var(--color-text-primary);
}

.tax-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(77, 182, 172, 0.15);
  color: var(--color-primary-dark);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  font-weight: 600;
  font-family: var(--font-mono);
}

/* ─────────────────────────────────────────────────────────────────────────────
   Keypad Panel (Left)
   ───────────────────────────────────────────────────────────────────────────── */
.left {
  width: 100%;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  order: 2;
  flex: 1 1 auto;
  min-height: 0;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

/* ─────────────────────────────────────────────────────────────────────────────
   Departments Grid
   ───────────────────────────────────────────────────────────────────────────── */
.departments {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: repeat(2, 1fr);
  gap: var(--space-2);
  height: 110px;
  max-height: 110px;
  flex-shrink: 0;
}

.btn.dept {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
  overflow: hidden;
}

.btn.dept::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(180deg, rgba(255,255,255,0.1) 0%, transparent 50%);
  pointer-events: none;
}

.btn.dept:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn.dept:active {
  transform: translateY(0);
  box-shadow: var(--shadow-xs);
}

.dept-name {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  line-height: 1.1;
  text-align: center;
}

.dept-tax {
  font-size: 9px;
  font-family: var(--font-mono);
  background: rgba(255, 255, 255, 0.2);
  padding: 1px 4px;
  border-radius: 3px;
  font-weight: 600;
  white-space: nowrap;
}

/* ─────────────────────────────────────────────────────────────────────────────
   Numeric Keypad
   ───────────────────────────────────────────────────────────────────────────── */
.keypad {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: repeat(4, 1fr);
  gap: var(--space-2);
  flex: 1 1 auto;
  min-height: 120px;
}

.btn.key {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-text-primary);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
  position: relative;
  overflow: hidden;
}

.btn.key::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(0, 0, 0, 0.1);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.3s, height 0.3s;
}

.btn.key:active::after {
  width: 200%;
  height: 200%;
}

.btn.key:hover {
  background: var(--color-bg-primary);
  border-color: var(--color-border-strong);
  transform: translateY(-1px);
}

.btn.key:active {
  transform: scale(0.95);
  filter: brightness(0.9);
}

/* Backspace key */
.btn.key:nth-child(4) {
  background: rgba(239, 83, 80, 0.15);
  border: none;
  color: var(--color-danger);
  font-size: var(--text-lg);
}

.btn.key:nth-child(4):hover {
  background: rgba(239, 83, 80, 0.25);
}

/* Clear Entry key */
.btn.key:nth-child(8) {
  background: rgba(239, 83, 80, 0.15);
  border: none;
  color: var(--color-danger);
  font-size: var(--text-sm);
  font-weight: 700;
}

.btn.key:nth-child(8):hover {
  background: rgba(239, 83, 80, 0.25);
}

/* Electronic Payment key */
.btn.key:nth-child(12) {
  background: var(--color-primary-dark) !important;
  border: none !important;
  color: var(--color-text-inverse) !important;
}

.btn.key:nth-child(12):hover {
  background: #00695C !important;
}

/* Cash Payment key */
.btn.key:nth-child(16) {
  background: var(--color-primary-dark) !important;
  border: none !important;
  color: var(--color-text-inverse) !important;
}

.btn.key:nth-child(16):hover {
  background: #00695C !important;
}

/* Payment buttons styling */
.btn.payment {
  flex-direction: column;
  gap: var(--space-1);
  font-weight: 700 !important;
}

.btn.payment i {
  font-size: var(--text-lg);
}

.btn.payment span {
  font-size: 10px;
  font-family: var(--font-body);
  font-weight: 600;
  letter-spacing: 0.02em;
}

/* ─────────────────────────────────────────────────────────────────────────────
   Function Buttons
   ───────────────────────────────────────────────────────────────────────────── */
.functions {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: repeat(2, 1fr);
  gap: var(--space-2);
  min-height: 80px;
  flex-shrink: 0;
}

.btn.func {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  background: var(--color-surface);
  color: var(--color-primary-dark);
  border: 1px solid rgba(0, 137, 123, 0.2);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
  position: relative;
  overflow: hidden;
}

.btn.func:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  background: var(--color-bg-primary);
}

.btn.func:active {
  transform: translateY(0);
}

.btn.func.active {
  background: var(--color-primary-subtle);
  border-color: var(--color-primary);
  color: var(--color-primary-dark);
  box-shadow: 0 0 0 2px var(--color-primary-light);
}

.btn.func.danger {
  color: var(--color-danger);
  border-color: rgba(239, 83, 80, 0.2);
}

.btn.func.danger:hover {
  background: rgba(239, 83, 80, 0.05);
}

.btn.func.primary,
.btn.func.success {
  color: var(--color-success);
  border-color: rgba(102, 187, 106, 0.2);
}

.btn.func.primary:hover,
.btn.func.success:hover {
  background: rgba(102, 187, 106, 0.05);
}

.btn.func.info {
  color: var(--color-info);
  border-color: rgba(66, 165, 245, 0.2);
}

.btn.func.info:hover {
  background: rgba(66, 165, 245, 0.05);
}

.btn.func.secondary {
  color: var(--color-text-secondary);
  border-color: rgba(117, 117, 117, 0.2);
}

.btn.func.secondary:hover {
  background: var(--color-bg-primary);
}

.func-icon {
  font-size: var(--text-lg);
}

.func-text {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

/* ─────────────────────────────────────────────────────────────────────────────
   Processing Overlay
   ───────────────────────────────────────────────────────────────────────────── */
.processing-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(55, 71, 79, 0.9);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  backdrop-filter: blur(12px);
  animation: fadeIn var(--duration-fast) var(--ease-out);
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.processing-content {
  background: var(--color-surface);
  border-radius: var(--radius-2xl);
  padding: var(--space-12) var(--space-10);
  text-align: center;
  box-shadow: var(--shadow-xl);
  animation: scaleIn var(--duration-normal) var(--ease-spring);
  max-width: 400px;
  width: 90%;
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.processing-icon {
  font-size: 56px;
  color: var(--color-primary);
  margin-bottom: var(--space-6);
  animation: spin 1s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.processing-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 400;
  color: var(--color-secondary);
  margin-bottom: var(--space-3);
  letter-spacing: -0.01em;
}

.processing-message {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
  line-height: 1.5;
}

.processing-details {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-primary);
  background: var(--color-primary-subtle);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-weight: 500;
}

/* ─────────────────────────────────────────────────────────────────────────────
   Modal System
   ───────────────────────────────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(55, 71, 79, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  backdrop-filter: blur(4px);
  animation: fadeIn var(--duration-fast) var(--ease-out);
}

.modal-content {
  background: var(--color-surface);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  max-width: 480px;
  width: 90%;
  box-shadow: var(--shadow-xl);
  animation: modalSlideIn var(--duration-normal) var(--ease-spring);
}

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.modal-content.large {
  max-width: 700px;
}

.modal-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

.modal-header i {
  font-size: var(--text-xl);
  color: var(--color-primary);
}

.modal-header h3 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 400;
  color: var(--color-secondary);
  margin: 0;
}

.modal-body {
  margin-bottom: var(--space-6);
}

.modal-body p {
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-4);
}

.modal-actions {
  display: flex;
  gap: var(--space-3);
  justify-content: flex-end;
}

/* ─────────────────────────────────────────────────────────────────────────────
   Form Elements
   ───────────────────────────────────────────────────────────────────────────── */
.form-group {
  margin-bottom: var(--space-5);
}

.form-group label {
  display: block;
  margin-bottom: var(--space-2);
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--color-text-primary);
}

.form-control {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-body);
  font-size: var(--text-base);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-secondary);
  color: var(--color-text-primary);
  transition: all var(--duration-fast) var(--ease-out);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-subtle);
}

.form-control::placeholder {
  color: var(--color-text-tertiary);
}

.form-text {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  margin-top: var(--space-2);
  display: block;
}

textarea.form-control {
  resize: vertical;
  min-height: 100px;
}

.form-row {
  display: flex;
  gap: var(--space-4);
}

.form-row .form-group {
  flex: 1;
}

/* ─────────────────────────────────────────────────────────────────────────────
   Buttons
   ───────────────────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}

.btn-primary:hover:not(:disabled) {
  background: var(--color-primary-dark);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--color-secondary);
  color: var(--color-text-inverse);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--color-secondary-light);
  transform: translateY(-1px);
}

.btn-success {
  background: var(--color-success);
  color: var(--color-text-inverse);
}

.btn-success:hover:not(:disabled) {
  background: var(--color-success-dark);
  transform: translateY(-1px);
}

.btn-warning {
  background: var(--color-warning);
  color: var(--color-text-primary);
}

.btn-warning:hover:not(:disabled) {
  filter: brightness(0.95);
  transform: translateY(-1px);
}

.btn-danger {
  background: var(--color-danger);
  color: var(--color-text-inverse);
}

.btn-danger:hover:not(:disabled) {
  filter: brightness(0.9);
  transform: translateY(-1px);
}

/* ─────────────────────────────────────────────────────────────────────────────
   Toast Notifications
   ───────────────────────────────────────────────────────────────────────────── */
.toast-container {
  position: fixed;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  z-index: 10001;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.toast {
  min-width: 0;
  max-width: 420px;
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-lg);
  color: var(--color-text-inverse);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  box-shadow: var(--shadow-lg);
  animation: toastSlideIn var(--duration-normal) var(--ease-spring);
}

@keyframes toastSlideIn {
  from {
    transform: translateY(100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.toast.success {
  background: linear-gradient(145deg, var(--color-success), var(--color-success-dark));
}

.toast.error {
  background: linear-gradient(145deg, #EF5350, #C62828);
}

.toast.warning {
  background: linear-gradient(145deg, var(--color-warning), #FB8C00);
  color: var(--color-text-primary);
}

.toast.info {
  background: linear-gradient(145deg, var(--color-info), #1E88E5);
}

.toast i {
  font-size: var(--text-xl);
  opacity: 0.9;
}

.toast-message {
  flex: 1;
  font-size: var(--text-sm);
  line-height: 1.4;
}

.toast-close {
  background: none;
  border: none;
  color: inherit;
  font-size: var(--text-lg);
  cursor: pointer;
  padding: 0;
  opacity: 0.7;
  transition: opacity var(--duration-fast);
}

.toast-close:hover {
  opacity: 1;
}

/* ─────────────────────────────────────────────────────────────────────────────
   Queue Page
   ───────────────────────────────────────────────────────────────────────────── */
.queue-page {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-5);
}

.queue-stats {
  display: flex;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
}

.queue-stats .stat-card {
  min-width: 140px;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  box-shadow: var(--shadow-sm);
}

.queue-stats .stat-card.pending {
  border-left: 4px solid var(--color-warning);
}

.queue-stats .stat-card.error {
  border-left: 4px solid var(--color-danger);
}

.queue-stats .stat-card.attempts {
  border-left: 4px solid var(--color-secondary);
}

.queue-toolbar {
  display: flex;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
  flex-wrap: wrap;
  align-items: center;
}

.queue-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.queue-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--duration-fast) var(--ease-out);
}

.queue-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.queue-item.error {
  border-left: 4px solid var(--color-danger);
  background: #FEF8F7;
}

.queue-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-4) var(--space-5);
  background: var(--color-bg-tertiary);
  border-bottom: 1px solid var(--color-divider);
}

.queue-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.queue-number {
  font-weight: 600;
  color: var(--color-text-primary);
}

.queue-time {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
}

.queue-status {
  display: flex;
  gap: var(--space-3);
  align-items: center;
}

.attempts-badge {
  background: var(--color-bg-tertiary);
  color: var(--color-text-secondary);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  font-weight: 500;
}

.status-badge {
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.status-badge.pending {
  background: #FEF3E2;
  color: #9A6B00;
}

.status-badge.error {
  background: #FEE8E5;
  color: #9A3412;
}

.status-badge.completed {
  background: #E8F5EE;
  color: #166534;
}

.status-badge.cancelled {
  background: #FEE8E5;
  color: #9A3412;
}

.queue-body {
  padding: var(--space-4) var(--space-5);
}

.queue-details {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}

.detail-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.detail-row .label {
  font-weight: 500;
  color: var(--color-text-tertiary);
  font-size: var(--text-sm);
}

.detail-row .value {
  font-weight: 600;
  color: var(--color-text-primary);
}

.error-details {
  background: #FEE8E5;
  border: 1px solid #FECACA;
  border-radius: var(--radius-md);
  padding: var(--space-3);
  margin-top: var(--space-4);
}

.error-message {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  color: #9A3412;
  font-size: var(--text-sm);
  line-height: 1.5;
}

.queue-actions {
  padding: var(--space-3) var(--space-5);
  background: var(--color-bg-tertiary);
  border-top: 1px solid var(--color-divider);
  display: flex;
  gap: var(--space-2);
  justify-content: flex-end;
}

.no-items {
  text-align: center;
  padding: var(--space-12) var(--space-5);
  color: var(--color-text-tertiary);
}

.no-items i {
  font-size: 64px;
  color: var(--color-success);
  margin-bottom: var(--space-5);
  opacity: 0.6;
}

.no-items h3 {
  margin: var(--space-3) 0;
  color: var(--color-text-primary);
  font-family: var(--font-display);
}

/* ─────────────────────────────────────────────────────────────────────────────
   Receipts Page
   ───────────────────────────────────────────────────────────────────────────── */
/* Receipts Page — iOS-aligned layout */
.receipts-page {
  padding: 0;
  background: var(--color-bg-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.receipts-page .header { display: none; }

.receipts-nav-bar {
  display: flex;
  align-items: center;
  padding: 12px 16px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.receipts-nav-back {
  background: none;
  border: none;
  color: var(--color-primary-dark);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  padding: 4px 0;
  display: flex;
  align-items: center;
  gap: 4px;
  min-width: 70px;
}

.receipts-nav-title {
  flex: 1;
  text-align: center;
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text-primary);
  margin: 0;
}

.receipts-nav-spacer {
  min-width: 70px;
}

.receipts-scroll {
  flex: 1;
  overflow-y: auto;
  padding: 8px 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* Receipt row — iOS compact card style */
.receipt-row {
  display: flex;
  align-items: center;
  padding: 12px;
  background: var(--color-surface);
  border-radius: 12px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04);
  cursor: pointer;
  transition: background 0.15s;
}

.receipt-row:active {
  background: var(--color-bg-tertiary);
}

.receipt-row-left {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.receipt-row-top {
  display: flex;
  align-items: center;
  gap: 6px;
}

.receipt-row-number {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.receipt-row-date {
  font-size: 12px;
  color: var(--color-text-tertiary);
}

.receipt-row-badges {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.receipt-badge {
  font-size: 10px;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: 4px;
  white-space: nowrap;
}

.badge-cash {
  color: #1565C0;
  background: rgba(21,101,192,0.1);
}

.badge-electronic {
  color: #7B1FA2;
  background: rgba(123,31,162,0.1);
}

.badge-success {
  color: var(--color-success);
  background: rgba(76,175,80,0.1);
}

.badge-danger {
  color: var(--color-danger);
  background: rgba(239,83,80,0.1);
}

.badge-warning {
  color: #E65100;
  background: rgba(230,81,0,0.1);
}

.badge-pending {
  color: var(--color-warning);
  background: rgba(255,152,0,0.1);
}

.receipt-row-right {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.receipt-row-total {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text-primary);
}

.receipt-row-chevron {
  font-size: 12px;
  color: var(--color-text-tertiary);
  opacity: 0.5;
}

.receipt-row.cancelled {
  opacity: 0.6;
}

/* Receipt detail — expanded card */
.receipt-detail {
  background: var(--color-surface);
  border-radius: 0 0 12px 12px;
  margin-top: -8px;
  padding: 0 12px 12px;
  border-top: 1px solid var(--color-divider);
}

.receipt-detail-items {
  padding: 8px 0;
}

.receipt-detail-item {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 8px;
  padding: 4px 0;
  font-size: 13px;
  color: var(--color-text-secondary);
}

.receipt-detail-item .item-desc {
  font-weight: 500;
}

.receipt-detail-item .item-qty {
  text-align: right;
  color: var(--color-text-tertiary);
}

.receipt-detail-item .item-price {
  text-align: right;
  font-weight: 600;
  color: var(--color-text-primary);
  min-width: 50px;
}

.receipt-detail-totals {
  border-top: 1px solid var(--color-divider);
  padding-top: 8px;
  margin-top: 4px;
}

.receipt-detail-row {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: var(--color-text-secondary);
  padding: 2px 0;
}

.receipt-detail-total {
  border-top: 1px solid var(--color-divider);
  margin-top: 4px;
  padding-top: 6px;
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text-primary);
}

.receipt-detail-actions {
  display: flex;
  gap: 8px;
  padding-top: 12px;
}

.receipt-action-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: white;
  padding: 12px;
  border: none;
  border-radius: 10px;
  cursor: pointer;
}

.receipt-action-danger {
  background: var(--color-danger);
}

.receipt-action-danger:active {
  opacity: 0.8;
}

/* Keep shared loading/empty states */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  padding: var(--space-10);
  color: var(--color-text-tertiary);
  font-size: var(--text-base);
}

.no-receipts {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 80px 20px;
  color: var(--color-text-tertiary);
  text-align: center;
}

.no-receipts i {
  font-size: 48px;
  opacity: 0.4;
}

.no-receipts h3 {
  font-size: 16px;
  font-weight: 600;
  margin: 0;
}

.no-receipts p {
  font-size: 13px;
  opacity: 0.7;
  margin: 0;
}

/* ─────────────────────────────────────────────────────────────────────────────
   Products Page
   ───────────────────────────────────────────────────────────────────────────── */
.products-page,
.products-selection-page {
  background: var(--color-bg-primary);
  min-height: 100vh;
}

.products-container {
  padding: var(--space-5);
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
}

.products-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-5);
  background: var(--color-surface);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  position: relative;
}

.search-box {
  position: relative;
  flex: 1;
  max-width: 400px;
}

.search-box input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  padding-right: var(--space-10);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-family: var(--font-body);
}

.search-box i {
  position: absolute;
  right: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-tertiary);
}

.products-management-gear {
  position: absolute;
  top: 50%;
  right: var(--space-4);
  transform: translateY(-50%);
  width: 36px;
  height: 36px;
  border: none;
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-sm);
}

.products-management-gear:hover {
  background: var(--color-primary-dark);
  transform: translateY(-50%) rotate(90deg);
}

.cart-info {
  display: flex;
  align-items: center;
  padding: var(--space-2) var(--space-3);
  background: var(--color-primary-subtle);
  color: var(--color-primary-dark);
  border-radius: var(--radius-md);
  font-weight: 600;
  margin-left: var(--space-4);
  font-size: var(--text-sm);
}

.products-list {
  min-height: 400px;
}

.no-products {
  text-align: center;
  padding: var(--space-12) var(--space-5);
  color: var(--color-text-tertiary);
}

.no-products i {
  font-size: 56px;
  margin-bottom: var(--space-5);
  opacity: 0.4;
}

/* Products Grid */
.products-grid {
  display: grid !important;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)) !important;
  gap: var(--space-3) !important;
  margin-bottom: var(--space-6) !important;
  width: 100% !important;
}

.product-btn {
  width: 100% !important;
  min-height: 100px !important;
  padding: var(--space-4) !important;
  background: var(--color-secondary) !important;
  color: var(--color-text-inverse) !important;
  border: none !important;
  border-radius: var(--radius-lg) !important;
  font-family: var(--font-body) !important;
  cursor: pointer !important;
  display: flex !important;
  flex-direction: column !important;
  align-items: center !important;
  justify-content: center !important;
  gap: var(--space-2) !important;
  transition: all var(--duration-fast) var(--ease-out) !important;
  position: relative;
  overflow: hidden;
}

.product-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 50%;
  background: linear-gradient(180deg, rgba(255,255,255,0.08) 0%, transparent 100%);
  pointer-events: none;
}

.product-btn:hover {
  background: var(--color-secondary-light) !important;
  transform: translateY(-3px) !important;
  box-shadow: var(--shadow-lg) !important;
}

.product-btn:active {
  transform: translateY(-1px) !important;
}

.product-btn-content {
  width: 100% !important;
  display: flex !important;
  flex-direction: column !important;
  align-items: center !important;
  gap: var(--space-2) !important;
  text-align: center !important;
  position: relative;
  z-index: 1;
}

.product-btn-name {
  font-weight: 700 !important;
  font-size: var(--text-sm) !important;
  text-transform: uppercase !important;
  letter-spacing: 0.03em !important;
  line-height: 1.3 !important;
}

.product-btn-price {
  font-family: var(--font-mono) !important;
  font-weight: 700 !important;
  font-size: var(--text-lg) !important;
  color: var(--color-success-light) !important;
}

.product-btn-description {
  font-size: var(--text-xs) !important;
  opacity: 0.7 !important;
  font-style: italic !important;
  line-height: 1.3 !important;
}

.product-btn-badges {
  display: flex !important;
  justify-content: center !important;
  gap: var(--space-2) !important;
  margin-top: var(--space-1) !important;
}

.product-tax-badge,
.product-dept-badge {
  background: rgba(255, 255, 255, 0.15) !important;
  color: var(--color-text-inverse) !important;
  padding: 2px var(--space-2) !important;
  border-radius: var(--radius-sm) !important;
  font-size: 9px !important;
  font-weight: 600 !important;
  text-transform: uppercase !important;
}

/* Product Card */
.product-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: all var(--duration-fast) var(--ease-out);
  border: 1px solid var(--color-border);
}

.product-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.product-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: var(--space-4);
  border-bottom: 1px solid var(--color-divider);
}

.product-info {
  flex: 1;
}

.product-name {
  font-weight: 600;
  font-size: var(--text-base);
  color: var(--color-text-primary);
  margin-bottom: var(--space-1);
}

.product-description {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
  line-height: 1.4;
}

.product-actions {
  display: flex;
  gap: var(--space-2);
}

.product-details {
  padding: var(--space-4);
}

.department-badge {
  background: var(--color-primary-subtle);
  color: var(--color-primary-dark);
  padding: 2px var(--space-2);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
}

/* Departments Section */
.departments-section {
  margin-top: var(--space-8);
  padding-top: var(--space-5);
  border-top: 2px solid var(--color-divider);
}

.departments-section h3 {
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
  font-family: var(--font-display);
  font-size: var(--text-lg);
}

.departments-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-3);
}

.dept-quick-button {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
  text-align: left;
  font-family: var(--font-body);
}

.dept-quick-button:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-subtle);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.dept-number {
  width: 32px;
  height: 32px;
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--text-sm);
}

.dept-info {
  flex: 1;
  font-size: var(--text-sm);
}

.dept-info div:first-child {
  font-weight: 600;
  color: var(--color-text-primary);
}

.dept-tax {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  margin-top: 2px;
}

.dept-price {
  font-weight: 700;
  color: var(--color-success);
  font-family: var(--font-mono);
  font-size: var(--text-base);
}

/* ─────────────────────────────────────────────────────────────────────────────
   Settings Page
   ───────────────────────────────────────────────────────────────────────────── */
.app-container.settings-page {
  overflow: visible;
  height: auto;
  min-height: 100vh;
}

.settings-page .header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  position: relative;
}

.settings-page .header h1 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: var(--color-secondary);
  margin: 0;
  order: 3;
  width: 100%;
  text-align: center;
}

.settings-page .back-btn {
  position: absolute;
  left: var(--space-3);
  top: 50%;
  transform: translateY(-50%);
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-xs);
}

.settings-container {
  padding: var(--space-4);
  max-width: 1400px;
  margin: 0 auto;
  overflow-y: auto;
  flex: 1;
}

.settings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.settings-section {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  box-shadow: var(--shadow-sm);
}

.settings-section h2 {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 400;
  margin-bottom: var(--space-4);
  color: var(--color-text-primary);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--color-divider);
}

.settings-section h2 i {
  color: var(--color-primary);
  font-size: var(--text-lg);
}

.settings-section .form-group {
  margin-bottom: var(--space-3);
}

.settings-section .form-group label {
  font-size: var(--text-xs);
  margin-bottom: var(--space-1);
}

.settings-section .form-control {
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
}

.settings-section .form-row {
  display: grid;
  grid-template-columns: 1fr 2fr 1fr;
  gap: var(--space-2);
}

.settings-section .form-row .form-group {
  margin-bottom: 0;
}

.form-check {
  margin-bottom: var(--space-3);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.form-check-input {
  width: 18px;
  height: 18px;
  margin: 0;
  accent-color: var(--color-primary);
  cursor: pointer;
}

.form-check-label {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  cursor: pointer;
  line-height: 1.3;
}

.settings-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-4);
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-lg);
}

.settings-actions button {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
  font-weight: 600;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  transition: all var(--duration-fast) var(--ease-out);
  flex: 1 1 auto;
  min-width: 100px;
}

.settings-actions button span {
  white-space: nowrap;
}

.settings-actions button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Storage Info */
.storage-info {
  margin-top: var(--space-4);
  padding: var(--space-3) var(--space-4);
  background: #E8F5EE;
  border: 1px solid #A5D6A7;
  border-radius: var(--radius-md);
  color: var(--color-success-dark);
  font-size: var(--text-sm);
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
}

/* Warning Box */
.warning {
  background: #FEF3E2;
  border: 1px solid #FFA726;
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  color: #9A6B00;
  font-size: var(--text-sm);
}

/* Details Content */
.details-content {
  max-height: 400px;
  overflow-y: auto;
}

.details-content pre {
  background: var(--color-bg-tertiary);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-family: var(--font-mono);
  line-height: 1.5;
  white-space: pre-wrap;
  word-wrap: break-word;
}

/* FA Spin */
.fa-spin {
  animation: spin 1s linear infinite;
}

/* ─────────────────────────────────────────────────────────────────────────────
   Responsive Design - MOBILE FIRST
   ───────────────────────────────────────────────────────────────────────────── */

/* Base styles are mobile-first (already applied above) */

/* Small phones (< 380px) */
@media (max-width: 380px) {
  .app-container {
    padding: var(--space-2);
    gap: var(--space-1);
  }

  .header {
    padding: var(--space-1) var(--space-2);
  }

  .app-logo {
    height: 28px;
  }

  .display {
    padding: var(--space-3);
    min-height: 80px;
    border-radius: var(--radius-lg);
  }

  .amount {
    font-size: var(--text-3xl);
  }

  .currency {
    font-size: var(--text-xl);
  }

  .line-value {
    font-size: var(--text-base);
  }

  .toggle-hint {
    display: none;
  }

  .settings-gear {
    width: 44px;
    height: 44px;
    top: var(--space-2);
    right: var(--space-2);
    font-size: var(--text-sm);
  }

  .btn-products {
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-xs);
  }

  .cart-counter {
    padding: var(--space-2);
    font-size: var(--text-xs);
  }

  .left {
    padding: var(--space-2);
    gap: var(--space-1);
    border-radius: var(--radius-lg);
  }

  .departments {
    height: 70px;
    max-height: 70px;
  }

  .dept-name {
    font-size: 8px;
  }

  .dept-tax {
    font-size: 7px;
    padding: 1px 3px;
  }

  .keypad {
    min-height: 140px;
    max-height: 180px;
  }

  .btn.key {
    font-size: var(--text-base);
    border-radius: var(--radius-md);
  }

  .btn.payment span {
    font-size: 8px;
  }

  .btn.payment i {
    font-size: var(--text-base);
  }

  .functions {
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: repeat(2, 1fr);
    min-height: 70px;
    gap: 3px;
  }

  .func-icon {
    font-size: 14px;
  }

  .func-text {
    font-size: 7px;
    line-height: 1;
  }
}

/* Standard phones (380px - 480px) */
@media (min-width: 380px) and (max-width: 480px) {
  .app-container {
    padding: var(--space-2);
    gap: var(--space-2);
  }

  .header {
    padding: var(--space-2);
  }

  .app-logo {
    height: 32px;
  }

  .display {
    padding: var(--space-3) var(--space-4);
    min-height: 90px;
    border-radius: var(--radius-xl);
  }

  .amount {
    font-size: var(--text-4xl);
  }

  .currency {
    font-size: var(--text-2xl);
  }

  .line-value {
    font-size: var(--text-lg);
  }

  .toggle-hint {
    font-size: 10px;
    padding: 2px 4px;
  }

  .settings-gear {
    width: 44px;
    height: 44px;
    top: var(--space-2);
    right: var(--space-2);
  }

  .top-bar {
    gap: var(--space-2);
  }

  .btn-products {
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-xs);
  }

  .cart-counter {
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-xs);
  }

  .left {
    padding: var(--space-2);
    gap: var(--space-2);
    border-radius: var(--radius-lg);
  }

  .departments {
    height: 80px;
    max-height: 80px;
    gap: 4px;
  }

  .btn.dept {
    border-radius: var(--radius-sm);
  }

  .dept-name {
    font-size: 9px;
  }

  .dept-tax {
    font-size: 8px;
    padding: 1px 4px;
  }

  .keypad {
    min-height: 150px;
    max-height: 200px;
    gap: 4px;
  }

  .btn.key {
    font-size: var(--text-lg);
    border-radius: var(--radius-md);
  }

  .btn.payment span {
    font-size: 9px;
  }

  .btn.payment i {
    font-size: var(--text-base);
  }

  .functions {
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: repeat(2, 1fr);
    min-height: 80px;
    gap: 4px;
  }

  .btn.func {
    border-radius: var(--radius-sm);
  }

  .func-icon {
    font-size: 16px;
  }

  .func-text {
    font-size: 8px;
    line-height: 1;
  }
}

/* Large phones (480px - 768px) */
@media (min-width: 480px) and (max-width: 768px) {
  .app-container {
    padding: var(--space-3);
    gap: var(--space-2);
  }

  .header {
    padding: var(--space-2) var(--space-3);
  }

  .app-logo {
    height: 36px;
  }

  .display {
    padding: var(--space-4) var(--space-5);
    min-height: 100px;
  }

  .amount {
    font-size: var(--text-4xl);
  }

  .currency {
    font-size: var(--text-2xl);
  }

  .settings-gear {
    width: 44px;
    height: 44px;
    top: var(--space-3);
    right: var(--space-3);
  }

  .top-bar {
    flex-direction: row;
    gap: var(--space-2);
  }

  .btn-products {
    flex: 0 0 auto;
  }

  .left {
    padding: var(--space-3);
    gap: var(--space-2);
  }

  .departments {
    height: 90px;
    max-height: 90px;
    gap: 6px;
  }

  .dept-name {
    font-size: 10px;
  }

  .dept-tax {
    font-size: 9px;
  }

  .keypad {
    min-height: 160px;
    max-height: 220px;
    gap: 6px;
  }

  .btn.key {
    font-size: var(--text-xl);
  }

  .functions {
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: repeat(2, 1fr);
    min-height: 90px;
    gap: 6px;
  }

  .func-icon {
    font-size: var(--text-lg);
  }

  .func-text {
    font-size: 9px;
  }
}

/* All mobile devices (< 768px) - common rules */
@media (max-width: 768px) {
  .main-content {
    flex-direction: column;
  }

  .right.show {
    max-height: 150px;
  }

  .toast-container {
    bottom: var(--space-4);
    left: 50%;
    transform: translateX(-50%);
    right: auto;
    width: calc(100% - var(--space-4));
    max-width: 420px;
  }

  .toast {
    min-width: auto;
    width: 100%;
    padding: var(--space-3);
  }

  .toast-message {
    font-size: var(--text-xs);
  }

  .queue-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
  }

  .queue-status {
    align-self: flex-end;
  }

  .queue-details {
    grid-template-columns: 1fr;
  }

  .queue-actions {
    justify-content: center;
    flex-wrap: wrap;
  }

  .products-grid {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)) !important;
    gap: var(--space-2) !important;
  }

  .product-btn {
    min-height: 70px !important;
    padding: var(--space-2) !important;
  }

  .product-btn-name {
    font-size: var(--text-xs) !important;
  }

  .product-btn-price {
    font-size: var(--text-sm) !important;
  }

  /* Settings page mobile */
  .settings-grid {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }

  .settings-page .header {
    padding: var(--space-2);
    gap: var(--space-2);
  }

  .settings-page .header h1 {
    font-size: var(--text-base);
  }

  .settings-page .back-btn {
    position: static;
    transform: none;
    order: -1;
    width: 100%;
    justify-content: center;
  }

  .settings-page .logo-container {
    order: 0;
  }

  .settings-container {
    padding: var(--space-2);
  }

  .settings-section {
    padding: var(--space-3);
    border-radius: var(--radius-md);
  }

  .settings-section h2 {
    font-size: var(--text-sm);
    margin-bottom: var(--space-3);
    padding-bottom: var(--space-2);
  }

  .settings-section h2 i {
    font-size: var(--text-base);
  }

  .settings-section .form-group {
    margin-bottom: var(--space-2);
  }

  .settings-section .form-group label {
    font-size: 11px;
  }

  .settings-section .form-control {
    padding: var(--space-2);
    font-size: var(--text-xs);
  }

  .settings-section .form-row {
    grid-template-columns: 1fr;
    gap: var(--space-2);
  }

  .form-check-label {
    font-size: var(--text-xs);
  }

  .settings-actions {
    padding: var(--space-3);
    gap: var(--space-2);
  }

  .settings-actions button {
    padding: var(--space-2) var(--space-3);
    font-size: 10px;
    min-width: 80px;
    flex: 1 1 calc(50% - var(--space-2));
  }

  .settings-actions button i {
    font-size: 12px;
  }

  .storage-info {
    font-size: var(--text-xs);
    padding: var(--space-2) var(--space-3);
    margin-top: var(--space-3);
  }

  /* Hide decorative elements on mobile */
  .header::after {
    display: none;
  }

  .display::after {
    display: none;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .left {
    flex: 0 0 60%;
  }

  .departments {
    height: 100px;
  }

  .keypad {
    min-height: 200px;
  }

  .functions {
    height: 110px;
  }
}

@media (min-width: 1025px) {
  .main-content {
    flex-direction: row;
  }

  .left {
    flex: 1;
    max-width: 600px;
  }

  .right {
    flex: 1;
    order: 2;
    max-height: none;
    display: block;
  }

  .right:not(.show) {
    display: none;
  }
}

/* ─────────────────────────────────────────────────────────────────────────────
   Print Styles
   ───────────────────────────────────────────────────────────────────────────── */
@media print {
  .header,
  .top-bar,
  .left,
  .toast-container,
  .modal-overlay,
  .processing-overlay {
    display: none !important;
  }

  .app-container {
    height: auto;
    overflow: visible;
  }

  .right {
    display: block !important;
    max-height: none !important;
  }
}

/* ─────────────────────────────────────────────────────────────────────────────
   Connection Status Component
   ───────────────────────────────────────────────────────────────────────────── */
.connection-status {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
  position: relative;
}

.connection-status:hover {
  transform: scale(1.05);
}

.connection-status:active {
  transform: scale(0.98);
}

.connection-status .status-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-base);
}

.connection-status .status-label {
  white-space: nowrap;
}

.connection-status .pending-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  border-radius: var(--radius-full);
  background: var(--color-danger);
  color: white;
  font-size: 11px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 4px rgba(77, 182, 172, 0.4);
}

/* Online State */
.connection-status.online {
  background: rgba(129, 178, 154, 0.15);
  color: var(--color-success-dark);
}

.connection-status.online .status-icon {
  color: var(--color-success);
}

/* Pending Sync State */
.connection-status.pending {
  background: rgba(242, 204, 143, 0.2);
  color: var(--color-secondary);
}

.connection-status.pending .status-icon {
  color: var(--color-warning);
}

.connection-status.pending .status-icon.syncing {
  animation: pulse-sync 1s ease-in-out infinite;
}

/* Offline State */
.connection-status.offline {
  background: rgba(77, 182, 172, 0.15);
  color: var(--color-primary-dark);
}

.connection-status.offline .status-icon {
  color: var(--color-danger);
}

/* Not Authenticated State */
.connection-status.not-auth {
  background: rgba(55, 71, 79, 0.1);
  color: var(--color-secondary);
}

.connection-status.not-auth .status-icon {
  color: var(--color-secondary-light);
}

/* API Error State */
.connection-status.api-error {
  background: rgba(77, 182, 172, 0.2);
  color: var(--color-primary-dark);
}

.connection-status.api-error .status-icon {
  color: var(--color-danger);
  animation: shake 0.5s ease-in-out;
}

@keyframes pulse-sync {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.6;
    transform: scale(0.95);
  }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-2px); }
  40% { transform: translateX(2px); }
  60% { transform: translateX(-2px); }
  80% { transform: translateX(2px); }
}

/* Header Connection Status Position */
.header .connection-status {
  margin-left: auto;
  margin-right: var(--space-3);
}

/* Mobile adjustments */
@media (max-width: 480px) {
  .connection-status {
    padding: var(--space-1) var(--space-2);
  }

  .connection-status .status-label {
    display: none;
  }

  .connection-status .status-icon {
    font-size: var(--text-lg);
  }
}

/* ─────────────────────────────────────────────────────────────────────────────
   Area Agenzia delle Entrate (AdE) - SPID/CIE Access
   ───────────────────────────────────────────────────────────────────────────── */

.ade-container {
  max-width: 640px;
  margin: 0 auto;
  padding: 24px 16px;
  min-height: 100vh;
  background: var(--color-bg-primary);
}

.ade-header {
  margin-bottom: 32px;
}

.ade-header h1 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin: 16px 0 8px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.ade-header h1 i {
  color: var(--color-primary-dark);
}

.ade-subtitle {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
  margin: 0;
}

.btn-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  color: var(--color-text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-back:hover {
  background: var(--color-bg-tertiary);
  color: var(--color-text-primary);
}

.ade-cards {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 32px;
}

.ade-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  background: var(--color-surface);
  border-radius: 16px;
  box-shadow: var(--shadow-md);
  cursor: pointer;
  transition: all 0.2s ease;
  border: 2px solid transparent;
}

.ade-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(55, 71, 79, 0.12);
}

.ade-card.spid-card:hover {
  border-color: var(--color-primary);
}

.ade-card.cie-card:hover {
  border-color: var(--color-info);
}

.ade-card-icon {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
}

.spid-card .ade-card-icon {
  background: var(--color-primary-subtle);
  color: var(--color-primary-dark);
}

.cie-card .ade-card-icon {
  background: rgba(66, 165, 245, 0.1);
  color: var(--color-info);
}

.ade-card-content {
  flex: 1;
  min-width: 0;
}

.ade-card-content h2 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin: 0 0 4px;
}

.ade-card-content p {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  margin: 0;
  line-height: 1.4;
}

.ade-card-arrow {
  flex-shrink: 0;
  color: var(--color-text-tertiary);
  font-size: 0.9rem;
}

.ade-info {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 16px;
  background: var(--color-primary-subtle);
  border-radius: 12px;
}

.ade-info-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  line-height: 1.4;
}

.ade-info-item i {
  color: var(--color-primary);
  margin-top: 2px;
  flex-shrink: 0;
}

/* Button style for Area AdE in POS function buttons */
.btn.func.ade {
  color: var(--color-primary-dark);
}

.btn.func.ade:hover {
  background: var(--color-primary-subtle);
}