/**
 * The Ramen Don — menu companion
 * Dark theme, design tokens, responsive layout.
 */

/* -------------------------------------------------------------------------- */
/* Tokens                                                                      */
/* -------------------------------------------------------------------------- */

:root {
  color-scheme: dark;

  --font-sans: "DM Sans", system-ui, sans-serif;
  --font-display: "Fraunces", Georgia, "Times New Roman", serif;

  /* Warm dark surfaces (tinted neutrals, not pure black) */
  --color-bg: oklch(0.17 0.02 55);
  --color-bg-elevated: oklch(0.22 0.022 55);
  --color-bg-muted: oklch(0.19 0.018 55);
  --color-border: oklch(0.32 0.02 55);
  --color-border-strong: oklch(0.4 0.025 55);

  --color-text: oklch(0.93 0.01 85);
  --color-text-muted: oklch(0.72 0.02 75);
  --color-text-faint: oklch(0.55 0.02 70);

  /* Accent: ramen red + warm gold */
  --color-accent: oklch(0.55 0.19 25);
  --color-accent-hover: oklch(0.5 0.2 25);
  --color-accent-muted: color-mix(in oklch, var(--color-accent) 35%, transparent);
  --color-warm: oklch(0.78 0.12 75);

  --tag-kitchen-jp: oklch(0.72 0.08 250);
  --tag-kitchen-jp-bg: color-mix(in oklch, oklch(0.72 0.08 250) 18%, var(--color-bg-elevated));
  --tag-kitchen-cn: oklch(0.75 0.1 145);
  --tag-kitchen-cn-bg: color-mix(in oklch, oklch(0.75 0.1 145) 18%, var(--color-bg-elevated));
  --tag-kitchen-drinks: oklch(0.72 0.12 290);
  --tag-kitchen-drinks-bg: color-mix(in oklch, oklch(0.72 0.12 290) 18%, var(--color-bg-elevated));

  --tag-meat: oklch(0.72 0.1 25);
  --tag-meat-bg: color-mix(in oklch, oklch(0.72 0.1 25) 15%, var(--color-bg-elevated));
  --tag-starch: oklch(0.78 0.1 85);
  --tag-starch-bg: color-mix(in oklch, oklch(0.78 0.1 85) 14%, var(--color-bg-elevated));
  --tag-type: oklch(0.7 0.06 200);
  --tag-type-bg: color-mix(in oklch, oklch(0.7 0.06 200) 16%, var(--color-bg-elevated));

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;

  --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.35);
  --shadow-md: 0 8px 24px oklch(0 0 0 / 0.45);
  --shadow-glow: 0 0 0 1px color-mix(in oklch, var(--color-accent) 35%, transparent);

  --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;

  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --duration-fast: 160ms;
  --duration-normal: 220ms;

  --header-h: 4rem;
  --focus-ring: 2px solid color-mix(in oklch, var(--color-warm) 65%, white);
  --focus-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  :root {
    --duration-fast: 0ms;
    --duration-normal: 0ms;
  }
}

/* -------------------------------------------------------------------------- */
/* Base                                                                        */
/* -------------------------------------------------------------------------- */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  margin: 0;
  min-height: 100dvh;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.5;
  background: var(--color-bg);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
}

/* Subtle grain + vignette */
body::before {
  content: "";
  pointer-events: none;
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 120% 80% at 50% -20%, oklch(0.35 0.06 25 / 0.25), transparent 50%),
    radial-gradient(ellipse 80% 50% at 100% 100%, oklch(0.25 0.04 290 / 0.12), transparent 45%);
  z-index: -1;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: var(--space-2);
  z-index: 1000;
  padding: var(--space-3) var(--space-4);
  background: var(--color-accent);
  color: white;
  font-weight: 600;
  border-radius: var(--radius-sm);
  text-decoration: none;
}

.skip-link:focus {
  left: var(--space-4);
  outline: none;
  box-shadow: 0 0 0 3px var(--color-bg), 0 0 0 5px var(--color-warm);
}

/* -------------------------------------------------------------------------- */
/* Header                                                                      */
/* -------------------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  min-height: var(--header-h);
  padding: var(--space-3) clamp(var(--space-4), 4vw, var(--space-8));
  background: color-mix(in oklch, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

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

.brand__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2.5vw, 1.45rem);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text);
}

.brand__tagline {
  margin: 0;
  font-size: max(0.8rem, 14px);
  color: var(--color-text-muted);
  max-width: 22rem;
  line-height: 1.45;
}

.header-stat {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: max(0.875rem, 14px);
  font-variant-numeric: tabular-nums;
  color: var(--color-text-muted);
}

.header-stat__label {
  flex-shrink: 0;
}

#header-cart-summary {
  color: var(--color-text-muted);
}

.header-stat strong {
  color: var(--color-warm);
  font-weight: 600;
}

/* -------------------------------------------------------------------------- */
/* App layout                                                                  */
/* -------------------------------------------------------------------------- */

.app-shell {
  display: grid;
  grid-template-columns: minmax(240px, 280px) minmax(0, 1fr) minmax(260px, 320px);
  gap: var(--space-6);
  align-items: start;
  max-width: 1680px;
  margin: 0 auto;
  padding: var(--space-6) clamp(var(--space-4), 3vw, var(--space-8)) var(--space-10);
  padding-bottom: calc(var(--space-10) + env(safe-area-inset-bottom, 0px));
}

@media (max-width: 1200px) {
  .app-shell {
    grid-template-columns: 1fr;
    gap: var(--space-5);
  }
}

/* -------------------------------------------------------------------------- */
/* Panels                                                                      */
/* -------------------------------------------------------------------------- */

.panel__title {
  margin: 0 0 var(--space-4);
  padding-bottom: var(--space-3);
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
}

.filters-panel {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: var(--space-5);
  position: sticky;
  top: calc(var(--header-h) + var(--space-4));
  max-height: calc(100dvh - var(--header-h) - var(--space-8));
  overflow-y: auto;
}

@media (max-width: 1200px) {
  .filters-panel {
    position: static;
    max-height: none;
  }
}

.filters-panel .panel__title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

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

@media (min-width: 600px) and (max-width: 1200px) {
  .filters-wrapper {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
  }
}

.filter-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.filter-group label {
  font-size: max(0.8125rem, 14px);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.select-input {
  width: 100%;
  padding: var(--space-3) var(--space-3);
  font-family: inherit;
  font-size: 0.9rem;
  color: var(--color-text);
  background: var(--color-bg-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: border-color var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-out);
  min-height: 44px;
}

.select-input:hover {
  border-color: var(--color-border-strong);
}

.select-input:focus {
  outline: none;
  border-color: color-mix(in oklch, var(--color-warm) 50%, var(--color-border));
  box-shadow: 0 0 0 3px color-mix(in oklch, var(--color-warm) 25%, transparent);
}

/* -------------------------------------------------------------------------- */
/* Menu column                                                                 */
/* -------------------------------------------------------------------------- */

.menu-column {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  min-width: 0;
}

.menu-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-3) 0;
}

.result-count {
  margin: 0;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.result-count output {
  font-weight: 600;
  color: var(--color-text);
}

.menu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 260px), 1fr));
  gap: var(--space-4);
}

.menu-card {
  display: flex;
  flex-direction: column;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform var(--duration-normal) var(--ease-out),
    box-shadow var(--duration-normal) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out);
}

@media (prefers-reduced-motion: reduce) {
  .menu-card {
    transition: none;
  }
}

.menu-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: color-mix(in oklch, var(--color-accent) 45%, var(--color-border));
}

.menu-card:focus-within {
  box-shadow: var(--shadow-glow);
  border-color: color-mix(in oklch, var(--color-warm) 35%, var(--color-border));
}

.card-content {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: var(--space-4);
  gap: var(--space-3);
}

.card-title {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.35;
  color: var(--color-text);
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-2);
  font-size: max(0.65rem, 11px);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-radius: 999px;
  border: 1px solid transparent;
  line-height: 1.2;
}

.tag--kitchen-japanese {
  color: var(--tag-kitchen-jp);
  background: var(--tag-kitchen-jp-bg);
  border-color: color-mix(in oklch, var(--tag-kitchen-jp) 28%, transparent);
}

.tag--kitchen-chinese {
  color: var(--tag-kitchen-cn);
  background: var(--tag-kitchen-cn-bg);
  border-color: color-mix(in oklch, var(--tag-kitchen-cn) 28%, transparent);
}

.tag--kitchen-drinks {
  color: var(--tag-kitchen-drinks);
  background: var(--tag-kitchen-drinks-bg);
  border-color: color-mix(in oklch, var(--tag-kitchen-drinks) 28%, transparent);
}

.tag--meat {
  color: var(--tag-meat);
  background: var(--tag-meat-bg);
  border-color: color-mix(in oklch, var(--tag-meat) 25%, transparent);
}

.tag--starch {
  color: var(--tag-starch);
  background: var(--tag-starch-bg);
  border-color: color-mix(in oklch, var(--tag-starch) 22%, transparent);
}

.tag--type {
  color: var(--tag-type);
  background: var(--tag-type-bg);
  border-color: color-mix(in oklch, var(--tag-type) 25%, transparent);
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-top: auto;
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border);
}

.price {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-warm);
  font-variant-numeric: tabular-nums;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 44px;
  padding: var(--space-2) var(--space-4);
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background var(--duration-fast) var(--ease-out),
    color var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out),
    transform var(--duration-fast) var(--ease-out);
}

.btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 var(--focus-offset) var(--color-bg-elevated), 0 0 0 calc(var(--focus-offset) + 2px) var(--color-warm);
}

.btn:active:not(:disabled) {
  transform: scale(0.98);
}

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

.btn--primary:hover:not(:disabled) {
  background: var(--color-accent-hover);
}

.btn--secondary {
  background: var(--color-bg-muted);
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn--secondary:hover:not(:disabled) {
  background: color-mix(in oklch, var(--color-bg-muted) 85%, white);
  border-color: var(--color-border-strong);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text-muted);
  border-color: var(--color-border);
}

.btn--ghost:hover:not(:disabled) {
  color: var(--color-text);
  border-color: var(--color-border-strong);
}

.btn--block {
  width: 100%;
}

.btn--sm {
  min-height: 40px;
  padding: var(--space-2) var(--space-3);
  font-size: 0.8rem;
}

.btn--icon {
  min-width: 44px;
  padding-left: var(--space-3);
  padding-right: var(--space-3);
  font-size: 1.1rem;
  line-height: 1;
}

/* -------------------------------------------------------------------------- */
/* Empty states                                                                */
/* -------------------------------------------------------------------------- */

.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--space-10) var(--space-4);
  color: var(--color-text-muted);
  background: var(--color-bg-muted);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
}

.empty-state strong {
  display: block;
  margin-bottom: var(--space-2);
  font-size: 1.05rem;
  color: var(--color-text);
}

.empty-state p {
  margin: var(--space-2) 0 0;
  font-size: 0.95rem;
}

/* -------------------------------------------------------------------------- */
/* Order panel                                                                 */
/* -------------------------------------------------------------------------- */

.cart-panel {
  padding: var(--space-5);
  position: sticky;
  top: calc(var(--header-h) + var(--space-4));
  max-height: calc(100dvh - var(--header-h) - var(--space-8));
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  scroll-margin-top: calc(var(--header-h) + var(--space-3));
}

/* Programmatic focus from “View list” must be visible (not only :focus-visible). */
#order-list:focus {
  outline: none;
  box-shadow: var(--shadow-glow), var(--shadow-sm);
  border-color: color-mix(in oklch, var(--color-warm) 35%, var(--color-border));
}

@media (max-width: 1200px) {
  .cart-panel {
    position: static;
    max-height: none;
  }
}

.cart-panel .panel__title {
  margin: 0;
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-border);
}

.cart-panel__hint {
  margin: calc(var(--space-2) * -1) 0 0;
  font-size: max(0.8rem, 14px);
  color: var(--color-text-faint);
  line-height: 1.45;
}

#cart-items {
  flex: 1;
  min-height: 120px;
  max-height: min(50dvh, 420px);
  overflow-y: auto;
  padding-right: var(--space-1);
  margin-right: calc(var(--space-1) * -1);
}

@media (max-width: 1200px) {
  #cart-items {
    max-height: none;
  }
}

.cart-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border);
}

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

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

.cart-item-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.3;
}

.cart-item-meta {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  font-variant-numeric: tabular-nums;
}

.cart-controls {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  flex-shrink: 0;
}

.cart-controls .btn--icon {
  min-width: 44px;
  min-height: 44px;
}

.cart-qty {
  min-width: 1.75rem;
  text-align: center;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--color-text);
}

.cart-total {
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border);
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  text-align: right;
  color: var(--color-warm);
  font-variant-numeric: tabular-nums;
}

.cart-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.empty-cart {
  text-align: center;
  padding: var(--space-6) var(--space-3);
  color: var(--color-text-muted);
  font-size: max(0.95rem, 15px);
  line-height: 1.45;
}

.empty-cart strong {
  color: var(--color-text);
  font-weight: 600;
}

/* -------------------------------------------------------------------------- */
/* Toast                                                                        */
/* -------------------------------------------------------------------------- */

.toast {
  position: fixed;
  bottom: calc(var(--space-6) + env(safe-area-inset-bottom, 0px));
  left: 50%;
  transform: translateX(-50%) translateY(120%);
  z-index: 100;
  max-width: min(90vw, 360px);
  padding: var(--space-3) var(--space-5);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  opacity: 0;
  transition: transform var(--duration-normal) var(--ease-out),
    opacity var(--duration-normal) var(--ease-out);
  pointer-events: none;
}

.toast.is-visible {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

@media (prefers-reduced-motion: reduce) {
  .toast {
    transition: opacity var(--duration-fast) linear;
  }
}

/* -------------------------------------------------------------------------- */
/* Mobile cart bar                                                             */
/* -------------------------------------------------------------------------- */

.mobile-cart-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 40;
  padding: var(--space-3) var(--space-4);
  padding-bottom: calc(var(--space-3) + env(safe-area-inset-bottom, 0px));
  background: color-mix(in oklch, var(--color-bg) 92%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid var(--color-border);
  box-shadow: 0 -8px 24px oklch(0 0 0 / 0.35);
}

.mobile-cart-bar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  max-width: 1680px;
  margin: 0 auto;
}

.mobile-cart-bar__summary {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.mobile-cart-bar__summary strong {
  display: block;
  font-size: 1rem;
  color: var(--color-warm);
  font-variant-numeric: tabular-nums;
}

@media (max-width: 1200px) {
  .mobile-cart-bar {
    display: block;
  }

  .mobile-cart-bar .btn--sm {
    min-height: 44px;
    padding-left: var(--space-4);
    padding-right: var(--space-4);
  }

  .app-shell {
    padding-bottom: calc(var(--space-10) + 5rem + env(safe-area-inset-bottom, 0px));
  }
}