@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600;700&family=DM+Sans:wght@400;500;600;700&display=swap');

:root {
  /* Background Scale - Deep Slate */
  --color-bg-primary:   #0c0f14;
  --color-bg-secondary: #12161e;
  --color-bg-tertiary:  #1a1f2b;
  --color-bg-elevated:  #222836;
  --color-bg-hover:     #2a3142;

  /* Aurora Teal */
  --color-accent:        #38bdf8;
  --color-accent-dim:    #0ea5e9;
  --color-accent-glow:   rgba(56, 189, 248, 0.15);
  --color-accent-subtle: rgba(56, 189, 248, 0.08);

  /* Text */
  --color-text-primary:   #f8fafc;
  --color-text-secondary: #a8b8cc;
  --color-text-muted:     #7a8ba0;
  --color-text-dim:       #5a6a7d;

  /* Borders */
  --color-border:        rgba(148, 163, 184, 0.12);
  --color-border-subtle: rgba(148, 163, 184, 0.06);
  --color-border-strong: rgba(148, 163, 184, 0.20);

  /* Semantic */
  --color-positive: #22c55e;
  --color-negative: #ef4444;
  --color-warning:  #f59e0b;

  /* Keg Status */
  --reefer:   #2196F3;
  --pulled:   #FF9800;
  --active:   #4CAF50;
  --kicked:   #F44336;
  --returned: #9E9E9E;

  /* Fonts */
  --font-display: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;

  /* Spacing */
  --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;

  /* Radius */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 10px;
  --radius-xl: 14px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 20px var(--color-accent-glow);

  /* Transitions */
  --ease-out: cubic-bezier(0.33, 1, 0.68, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --transition-fast: 120ms var(--ease-out);
  --transition-base: 200ms var(--ease-out);
  --transition-slow: 320ms var(--ease-in-out);

  /* Z-index */
  --z-base:    1;
  --z-overlay: 10;
  --z-panel:   100;
  --z-header:  200;
  --z-modal:   300;
  --z-tooltip: 400;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-display);
  font-size: 0.9375rem;
  line-height: 1.5;
  background: var(--color-bg-primary);
  color: var(--color-text-secondary);
  min-height: 100dvh;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-text-primary);
}

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px var(--color-accent-glow);
}

[x-cloak] { display: none !important; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Container */
.container {
  max-width: 480px;
  margin: 0 auto;
  padding: 0 var(--space-4) var(--space-6);
}

/* Navigation */
.nav {
  background: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: var(--z-header);
}

.nav::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--color-accent-dim) 20%,
    var(--color-accent) 50%,
    var(--color-accent-dim) 80%,
    transparent 100%
  );
  opacity: 0.4;
}

.nav-inner {
  max-width: 480px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  padding: 0 var(--space-2);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.nav-inner::-webkit-scrollbar {
  display: none;
}

.nav a {
  display: flex;
  align-items: center;
  padding: var(--space-3) var(--space-3);
  text-decoration: none;
  color: var(--color-text-muted);
  font-size: 0.8125rem;
  font-weight: 500;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.nav a.active {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.nav a:hover {
  color: var(--color-text-primary);
}

.nav .lock-btn {
  margin-left: auto;
  color: var(--color-text-muted);
  cursor: pointer;
  background: none;
  border: none;
  font-size: 16px;
  padding: var(--space-3);
  flex-shrink: 0;
  transition: color var(--transition-fast);
}

.nav .lock-btn:hover {
  color: var(--color-negative);
}

/* PIN Gate */
.pin-gate {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100dvh;
  padding: var(--space-6);
  text-align: center;
}

.pin-gate h1 {
  font-size: 1.75rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.pin-gate .subtitle {
  color: var(--color-text-muted);
  margin-bottom: var(--space-8);
  font-size: 0.875rem;
}

.pin-input {
  width: 200px;
  padding: var(--space-4);
  font-family: var(--font-mono);
  font-size: 2rem;
  text-align: center;
  letter-spacing: 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-bg-tertiary);
  color: var(--color-text-primary);
  -moz-appearance: textfield;
  transition: all var(--transition-base);
}

.pin-input::-webkit-outer-spin-button,
.pin-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.pin-input::placeholder {
  color: var(--color-text-dim);
}

.pin-input:hover {
  border-color: var(--color-border-strong);
  background: var(--color-bg-elevated);
}

.pin-input:focus {
  outline: none;
  border-color: var(--color-accent);
  background: var(--color-bg-elevated);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.pin-submit {
  margin-top: var(--space-4);
  padding: var(--space-3) var(--space-10);
  font-family: var(--font-display);
  font-size: 0.9375rem;
  font-weight: 600;
  background: var(--color-accent-dim);
  color: var(--color-text-primary);
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  min-height: 48px;
  transition: all var(--transition-fast);
}

.pin-submit:hover {
  background: var(--color-accent);
}

.pin-submit:active {
  transform: scale(0.98);
}

.pin-error {
  color: var(--color-negative);
  margin-top: var(--space-3);
  font-size: 0.875rem;
  font-weight: 500;
  min-height: 20px;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-8px); }
  40%, 80% { transform: translateX(8px); }
}

.shake {
  animation: shake 0.4s ease-in-out;
}

/* Page content */
.page-header {
  padding: var(--space-5) 0 var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.page-header h1 {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
}

.placeholder {
  background: var(--color-bg-tertiary);
  border: 1px dashed var(--color-border-strong);
  border-radius: var(--radius-lg);
  padding: var(--space-12) var(--space-6);
  text-align: center;
  color: var(--color-text-dim);
  font-size: 0.9375rem;
}

/* Buttons */
button, .btn {
  min-height: 48px;
  cursor: pointer;
  font-family: var(--font-display);
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  font-size: 0.875rem;
  font-weight: 600;
  background: var(--color-accent-dim);
  color: var(--color-text-primary);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  min-height: 40px;
  transition: all var(--transition-fast);
}

.btn-primary:hover {
  background: var(--color-accent);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  font-size: 0.875rem;
  font-weight: 500;
  background: var(--color-bg-tertiary);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  min-height: 40px;
  transition: all var(--transition-fast);
}

.btn-secondary:hover {
  background: var(--color-bg-elevated);
  border-color: var(--color-border-strong);
  color: var(--color-text-primary);
}

.btn-danger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-4);
  font-size: 0.875rem;
  font-weight: 500;
  background: transparent;
  color: var(--color-negative);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: var(--radius-md);
  cursor: pointer;
  min-height: 40px;
  transition: all var(--transition-fast);
}

.btn-danger:hover {
  background: rgba(239, 68, 68, 0.1);
  border-color: var(--color-negative);
}

/* Inputs */
.input {
  width: 100%;
  height: 40px;
  padding: 0 var(--space-4);
  font-family: var(--font-display);
  font-size: 0.875rem;
  color: var(--color-text-primary);
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.input::placeholder {
  color: var(--color-text-dim);
}

.input:hover {
  border-color: var(--color-border-strong);
  background: var(--color-bg-elevated);
}

.input:focus {
  outline: none;
  border-color: var(--color-accent);
  background: var(--color-bg-elevated);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
}

select.input {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%237a8ba0' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
}

/* Form groups */
.form-group {
  margin-bottom: var(--space-4);
}

.form-label {
  display: block;
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
}

/* Cards */
.card {
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  transition: background var(--transition-fast);
}

.card:hover {
  background: var(--color-bg-elevated);
}

/* Tables */
.table {
  width: 100%;
  border-collapse: collapse;
}

.table th {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-dim);
  background: var(--color-bg-tertiary);
  padding: var(--space-3) var(--space-3);
  text-align: left;
}

.table td {
  padding: var(--space-3) var(--space-3);
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-border-subtle);
  font-size: 0.875rem;
}

.table tbody tr {
  transition: background var(--transition-fast);
}

.table tbody tr:hover {
  background: var(--color-bg-tertiary);
}

/* Filter tabs */
.filter-tabs {
  display: flex;
  gap: var(--space-1);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 3px;
}

.filter-tab {
  flex: 1;
  padding: var(--space-2) var(--space-3);
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text-muted);
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  min-height: 32px;
  transition: all var(--transition-fast);
}

.filter-tab:hover {
  color: var(--color-text-secondary);
}

.filter-tab.active {
  background: var(--color-accent-subtle);
  color: var(--color-accent);
  border: 1px solid rgba(56, 189, 248, 0.2);
}

/* Modal / Overlay */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: var(--z-modal);
  display: flex;
  align-items: flex-end;
  justify-content: center;
}

.modal {
  width: 100%;
  max-width: 480px;
  max-height: 85vh;
  overflow-y: auto;
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  padding: var(--space-5);
}

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

.modal-header h2 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text-primary);
}

.modal-close {
  background: none;
  border: none;
  color: var(--color-text-muted);
  font-size: 1.25rem;
  cursor: pointer;
  padding: var(--space-2);
  min-height: auto;
  transition: color var(--transition-fast);
}

.modal-close:hover {
  color: var(--color-text-primary);
}

.modal-actions {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-5);
}

.modal-actions > * {
  flex: 1;
}

/* Product list items */
.product-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border-subtle);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.product-item:last-child {
  border-bottom: none;
}

.product-item:hover {
  background: var(--color-bg-hover);
}

.product-info {
  flex: 1;
  min-width: 0;
}

.product-name {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.product-brewery {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.product-meta {
  text-align: right;
  flex-shrink: 0;
}

.product-type {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

.product-type.beer {
  color: var(--color-accent);
  background: var(--color-accent-subtle);
}

.product-type.wine {
  color: #c084fc;
  background: rgba(192, 132, 252, 0.1);
}

.product-cost {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-top: 2px;
}

.product-keg-count {
  font-size: 0.75rem;
  color: var(--color-text-dim);
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: var(--space-12) var(--space-4);
  color: var(--color-text-dim);
}

.empty-state p {
  margin-bottom: var(--space-4);
}

/* Status badges */
.status-badge {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  color: white;
}

.status-reefer { background: var(--reefer); }
.status-pulled { background: var(--pulled); }
.status-active { background: var(--active); }
.status-kicked { background: var(--kicked); }
.status-returned { background: var(--returned); }

/* Autocomplete */
.autocomplete-wrap {
  position: relative;
}

.autocomplete-list {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  box-shadow: var(--shadow-md);
  z-index: var(--z-tooltip);
  max-height: 160px;
  overflow-y: auto;
}

.autocomplete-item {
  padding: var(--space-2) var(--space-4);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.autocomplete-item:hover {
  background: var(--color-bg-hover);
  color: var(--color-text-primary);
}

/* Confirm dialog */
.confirm-bar {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: rgba(239, 68, 68, 0.08);
  border: 1px solid rgba(239, 68, 68, 0.2);
  border-radius: var(--radius-md);
  margin-top: var(--space-3);
}

.confirm-bar span {
  flex: 1;
  font-size: 0.8125rem;
  color: var(--color-negative);
}

.confirm-bar button {
  min-height: 32px;
  padding: var(--space-1) var(--space-3);
  font-size: 0.8125rem;
}