/* =========================================================================
   KŌJI — Ramen-Bar & Izakaya, Berlin
   Design system: golden-ratio type scale (φ=1.618) · Fibonacci spacing
   Palette: near-black ground, off-white ink, single vermilion accent.
   ========================================================================= */

/* -------------------------------------------------------------------------
   0. Tokens
   ---------------------------------------------------------------------- */
:root {
  /* Colour — near-black ground (warm, not pure #000), off-white paper,
     one precise vermilion accent. */
  --ink:          #0b0a09;
  --ink-raised:   #161210;
  --ink-line:     #2c2620;
  --paper:        #f4efe4;
  --paper-dim:    #b8ac9a;
  --vermilion:    #cc2936;
  --vermilion-dim:#8f1b26;
  --vermilion-bright: #e2434f;

  /* Golden-ratio type scale (φ = 1.618), fluid via clamp() so it scales
     down sensibly on small viewports without leaving the ratio system. */
  --fs-xs:  clamp(0.56rem, 0.52rem + 0.18vw, 0.618rem);
  --fs-sm:  clamp(0.92rem, 0.88rem + 0.18vw, 1rem);
  --fs-md:  clamp(1.18rem, 0.98rem + 0.9vw,  1.618rem);
  --fs-lg:  clamp(1.62rem, 1.15rem + 2.1vw,  2.618rem);
  --fs-xl:  clamp(2.2rem,  1.35rem + 3.9vw,  4.236rem);
  --fs-xxl: clamp(2.75rem, 1.15rem + 7.6vw,  6.854rem);

  /* Fibonacci spacing (px) — the only spacing values used anywhere. */
  --sp-1: 8px;
  --sp-2: 13px;
  --sp-3: 21px;
  --sp-4: 34px;
  --sp-5: 55px;
  --sp-6: 89px;
  --sp-7: 144px;
  --sp-8: 233px;

  --font-display: ui-sans-serif, "Helvetica Neue", "Arial Narrow", "Arial Black", Arial, sans-serif;
  --font-body: ui-sans-serif, "Helvetica Neue", Helvetica, Arial, sans-serif;

  --ease-editorial: cubic-bezier(0.19, 1, 0.22, 1);
  --split-wide: 61.8fr 38.2fr;
  --split-narrow: 38.2fr 61.8fr;
}

/* -------------------------------------------------------------------------
   1. Reset
   ---------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: var(--sp-6); }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  line-height: 1.7;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, video { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3, p, ul, figure { margin: 0; }
h1, h2, h3 { text-wrap: balance; }
p { text-wrap: pretty; }
ul { padding: 0; list-style: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

/* Visible focus states everywhere — never suppressed. */
a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--vermilion-bright);
  outline-offset: var(--sp-1);
}

/* Subtle full-page grain, editorial poster texture, not a flat AI-gradient
   surface. Self-contained SVG data URI — no external requests. */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 999;
  pointer-events: none;
  opacity: 0.045;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='120' height='120'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

.container {
  width: 100%;
  max-width: 1440px;
  margin-inline: auto;
  padding-inline: var(--sp-4);
}
@media (min-width: 900px) {
  .container { padding-inline: var(--sp-6); }
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0; border: 0;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  overflow: hidden;
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: var(--sp-3);
  top: -100px;
  background: var(--vermilion);
  color: var(--paper);
  padding: var(--sp-2) var(--sp-3);
  z-index: 1000;
  transition: top 0.2s var(--ease-editorial);
}
.skip-link:focus { top: var(--sp-3); }

/* -------------------------------------------------------------------------
   2. Eyebrow / bilingual label — structural device.
   Kōji is a Japanese kitchen run in Germany; every section carries its
   Japanese section-name alongside the German one, the way real menus and
   izakaya signage do. Text stays paper-dim for contrast; the accent is
   spent on the tick mark, never on small running text.
   ---------------------------------------------------------------------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--font-display);
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--paper-dim);
}
.eyebrow::before {
  content: "";
  width: 13px;
  height: 2px;
  background: var(--vermilion);
  flex: none;
}
.eyebrow .jp {
  color: var(--paper-dim);
  letter-spacing: 0.05em;
  font-weight: 400;
}

/* -------------------------------------------------------------------------
   3. Header
   ---------------------------------------------------------------------- */
.site-header {
  position: fixed;
  inset-inline: 0;
  top: 0;
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-3) var(--sp-4);
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background-color 0.4s var(--ease-editorial), border-color 0.4s var(--ease-editorial);
}
@media (min-width: 900px) {
  .site-header { padding: var(--sp-3) var(--sp-6); }
}
.site-header.is-scrolled {
  background: rgba(11, 10, 9, 0.86);
  backdrop-filter: blur(10px);
  border-bottom-color: var(--ink-line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  text-decoration: none;
}
.brand-mark { width: 21px; height: 21px; flex: none; }
.brand-word {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--fs-md);
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--paper);
}

.main-nav {
  display: none;
  align-items: center;
  gap: var(--sp-5);
}
@media (min-width: 900px) {
  .main-nav { display: flex; }
}
.main-nav a {
  font-size: var(--fs-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--paper-dim);
  position: relative;
  padding-block: var(--sp-1);
}
.main-nav a::after {
  content: "";
  position: absolute;
  left: 0; right: 100%;
  bottom: 0;
  height: 1px;
  background: var(--vermilion);
  transition: right 0.3s var(--ease-editorial);
}
.main-nav a:hover::after,
.main-nav a:focus-visible::after { right: 0; }
.main-nav a:hover,
.main-nav a:focus-visible { color: var(--paper); }

.header-cta { display: none; }
@media (min-width: 900px) {
  .header-cta { display: inline-flex; }
}

.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  gap: var(--sp-1);
  padding: var(--sp-2);
}
@media (min-width: 900px) { .nav-toggle { display: none; } }
.nav-toggle span {
  width: 21px;
  height: 2px;
  background: var(--paper);
  transition: transform 0.3s var(--ease-editorial), opacity 0.3s var(--ease-editorial);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(10px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-10px) rotate(-45deg); }

.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: 400;
  background: var(--ink);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--sp-4);
  padding: var(--sp-6);
  transform: translateY(-100%);
  visibility: hidden;
  transition: transform 0.45s var(--ease-editorial), visibility 0s linear 0.45s;
}
.mobile-nav.is-open {
  transform: translateY(0);
  visibility: visible;
  transition: transform 0.45s var(--ease-editorial), visibility 0s linear 0s;
}
.mobile-nav a {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  text-transform: uppercase;
  text-decoration: none;
  color: var(--paper);
  border-bottom: 1px solid var(--ink-line);
  padding-bottom: var(--sp-2);
}
@media (min-width: 900px) { .mobile-nav { display: none; } }

/* -------------------------------------------------------------------------
   4. Buttons
   ---------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--font-display);
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
  padding: var(--sp-3) var(--sp-4);
  border: 1px solid transparent;
  transition: background-color 0.3s var(--ease-editorial), color 0.3s var(--ease-editorial),
              border-color 0.3s var(--ease-editorial), transform 0.3s var(--ease-editorial);
}
.btn-primary {
  background: var(--vermilion);
  color: var(--paper);
}
.btn-primary:hover, .btn-primary:focus-visible {
  background: var(--vermilion-bright);
  transform: translateY(-2px);
}
.btn-primary:active { transform: translateY(0); background: var(--vermilion-dim); }

.btn-ghost {
  background: transparent;
  color: var(--paper);
  border-color: var(--ink-line);
}
.btn-ghost:hover, .btn-ghost:focus-visible {
  border-color: var(--vermilion);
  color: var(--vermilion-bright);
}

.btn-line {
  padding: 0;
  border: 0;
  color: var(--paper);
  gap: var(--sp-1);
}
.btn-line::after { content: "→"; color: var(--vermilion); transition: transform 0.3s var(--ease-editorial); }
.btn-line:hover::after, .btn-line:focus-visible::after { transform: translateX(5px); }

/* -------------------------------------------------------------------------
   5. Hero — scroll-scrubbed video
   ---------------------------------------------------------------------- */
.hero {
  position: relative;
  height: 340vh; /* scroll runway that drives the scrub */
}
.hero-stage {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
}
.hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
  background: radial-gradient(ellipse at 50% 30%, #241c16 0%, var(--ink) 70%);
}
.hero-media video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.hero-scrim {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(11,10,9,0.55) 0%, rgba(11,10,9,0.15) 30%, rgba(11,10,9,0.35) 62%, rgba(11,10,9,0.94) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  width: 100%;
  padding: 0 var(--sp-4) var(--sp-7);
}
@media (min-width: 900px) {
  .hero-content { padding: 0 var(--sp-6) var(--sp-8); }
}
.hero-content .eyebrow { margin-bottom: var(--sp-4); color: var(--paper); }
.hero-content .eyebrow::before { background: var(--vermilion-bright); }

.hero-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-stretch: condensed;
  font-size: var(--fs-xxl);
  line-height: 0.86;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  color: var(--paper);
  margin-bottom: var(--sp-4);
}
.hero-title .accent-dot { color: var(--vermilion); }

.hero-sub {
  font-size: var(--fs-md);
  font-weight: 300;
  max-width: 34ch;
  color: var(--paper);
  margin-bottom: var(--sp-5);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--sp-4);
}

/* Signature element: a vertical timecode / scrub readout, like an editing
   suite timeline, tying the visual motif to "scroll = scrub" and to the
   brand's precise, editorial register. */
.hero-timecode {
  position: absolute;
  z-index: 2;
  right: var(--sp-4);
  top: 50%;
  transform: translateY(-50%);
  display: none;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-3);
  color: var(--paper-dim);
}
@media (min-width: 700px) {
  .hero-timecode { display: flex; }
}
@media (min-width: 900px) { .hero-timecode { right: var(--sp-6); } }
.hero-timecode .tc-rule {
  width: 1px;
  height: var(--sp-6);
  background: var(--ink-line);
  position: relative;
  overflow: hidden;
}
.hero-timecode .tc-fill {
  position: absolute;
  left: 0; top: 0; right: 0;
  height: 100%;
  background: var(--vermilion);
  transform: scaleY(0);
  transform-origin: top;
  will-change: transform;
}
.hero-timecode .tc-current {
  font-family: var(--font-display);
  font-size: var(--fs-xs);
  letter-spacing: 0.08em;
  color: var(--paper);
  font-variant-numeric: tabular-nums;
}
.hero-timecode .tc-total {
  font-size: var(--fs-xs);
  letter-spacing: 0.08em;
  color: var(--paper-dim);
  font-variant-numeric: tabular-nums;
}

.scroll-cue {
  position: absolute;
  z-index: 2;
  left: var(--sp-4);
  bottom: var(--sp-4);
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: var(--fs-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--paper-dim);
}
@media (min-width: 900px) { .scroll-cue { left: var(--sp-6); bottom: var(--sp-6); } }
.scroll-cue .cue-line {
  width: 1px;
  height: var(--sp-4);
  background: linear-gradient(180deg, var(--vermilion) 0%, transparent 100%);
  animation: cue-pulse 2.2s var(--ease-editorial) infinite;
}
@keyframes cue-pulse {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 1; }
}

/* -------------------------------------------------------------------------
   6. Section scaffolding + scroll reveal
   ---------------------------------------------------------------------- */
.section {
  position: relative;
  padding-block: var(--sp-7);
  border-top: 1px solid var(--ink-line);
}
@media (min-width: 900px) { .section { padding-block: var(--sp-8); } }

.reveal {
  opacity: 0;
  transform: translateY(34px);
  transition: opacity 0.9s var(--ease-editorial), transform 0.9s var(--ease-editorial);
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.08s; }
.reveal-delay-2 { transition-delay: 0.16s; }
.reveal-delay-3 { transition-delay: 0.24s; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .scroll-cue .cue-line { animation: none; }
}

/* Asymmetric 61.8 / 38.2 split, used consistently instead of any 50/50
   two-column layout. */
.split {
  display: grid;
  gap: var(--sp-6);
  grid-template-columns: 1fr;
}
@media (min-width: 900px) {
  .split { grid-template-columns: var(--split-wide); gap: var(--sp-7); }
  .split-reverse { grid-template-columns: var(--split-narrow); }
}

.section-head {
  margin-bottom: var(--sp-6);
}
.section-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-stretch: condensed;
  font-size: var(--fs-xl);
  line-height: 0.98;
  text-transform: uppercase;
  letter-spacing: -0.005em;
  margin-top: var(--sp-3);
  max-width: 16ch;
}

/* -------------------------------------------------------------------------
   7. Story section
   ---------------------------------------------------------------------- */
.story-copy p {
  font-size: var(--fs-md);
  font-weight: 300;
  color: var(--paper);
  max-width: 56ch;
}
.story-copy p + p { margin-top: var(--sp-4); }
.story-copy strong { color: var(--vermilion-bright); font-weight: 600; }

.story-stat {
  border-left: 1px solid var(--vermilion);
  padding-left: var(--sp-4);
  align-self: start;
}
.story-stat .stat-num {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-xxl);
  line-height: 0.82;
  color: var(--vermilion);
}
.story-stat .stat-label {
  display: block;
  margin-top: var(--sp-3);
  font-size: var(--fs-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--paper-dim);
  max-width: 22ch;
}

/* -------------------------------------------------------------------------
   8. Menu section
   ---------------------------------------------------------------------- */
.menu-intro p {
  color: var(--paper-dim);
  font-size: var(--fs-sm);
  max-width: 32ch;
  margin-top: var(--sp-3);
}

.menu-list { border-top: 1px solid var(--ink-line); }
.menu-item {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: baseline;
  gap: var(--sp-3) var(--sp-4);
  padding-block: var(--sp-5);
  border-bottom: 1px solid var(--ink-line);
  transform: translateX(0);
  transition: transform 0.4s var(--ease-editorial), border-color 0.4s var(--ease-editorial);
}
.menu-item:hover, .menu-item:focus-within {
  transform: translateX(13px);
  border-color: var(--vermilion-dim);
}
.menu-item-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-md);
  text-transform: uppercase;
  letter-spacing: 0.005em;
  grid-column: 1;
}
.menu-item-price {
  font-family: var(--font-display);
  font-size: var(--fs-sm);
  color: var(--vermilion-bright);
  grid-column: 2;
  white-space: nowrap;
}
.menu-item-desc {
  grid-column: 1 / -1;
  color: var(--paper-dim);
  font-size: var(--fs-sm);
  max-width: 62ch;
  margin-top: var(--sp-1);
}
.menu-item-tag {
  display: block;
  font-size: var(--fs-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--paper-dim);
  opacity: 0.7;
  margin-bottom: var(--sp-1);
  grid-column: 1;
}

/* -------------------------------------------------------------------------
   9. Reservation section — the second, deliberate spend of the accent.
   ---------------------------------------------------------------------- */
.reserve {
  background: var(--vermilion);
  border-top: none;
  color: var(--paper);
}
.reserve .eyebrow, .reserve .eyebrow .jp { color: var(--paper); }
.reserve .eyebrow::before { background: var(--ink); }
.reserve-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-stretch: condensed;
  font-size: var(--fs-xl);
  line-height: 0.92;
  text-transform: uppercase;
  color: var(--paper);
  max-width: 18ch;
  margin-top: var(--sp-3);
}
.reserve-body {
  font-size: var(--fs-md);
  font-weight: 300;
  max-width: 46ch;
  margin-top: var(--sp-4);
  color: var(--paper);
}
.reserve-actions {
  margin-top: var(--sp-6);
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-4);
  align-items: center;
}
.reserve .btn-primary {
  background: var(--ink);
  color: var(--paper);
}
.reserve .btn-primary:hover, .reserve .btn-primary:focus-visible {
  background: #000;
  transform: translateY(-2px);
}
.reserve .btn-ghost {
  border-color: rgba(244,239,228,0.85);
  color: var(--paper);
}
.reserve .btn-ghost:hover, .reserve .btn-ghost:focus-visible {
  border-color: var(--ink);
  color: var(--ink);
  background: rgba(11,10,9,0.08);
}

/* -------------------------------------------------------------------------
   10. Contact section
   ---------------------------------------------------------------------- */
.contact-block + .contact-block { margin-top: var(--sp-6); }
.contact-block h3 {
  font-family: var(--font-display);
  font-size: var(--fs-sm);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--paper-dim);
  margin-bottom: var(--sp-3);
}
.contact-block p, .contact-block address {
  font-style: normal;
  font-size: var(--fs-md);
  font-weight: 300;
  color: var(--paper);
}
.contact-block a {
  text-decoration: none;
  border-bottom: 1px solid var(--vermilion-dim);
  transition: border-color 0.3s var(--ease-editorial), color 0.3s var(--ease-editorial);
}
.contact-block a:hover, .contact-block a:focus-visible {
  border-color: var(--vermilion-bright);
  color: var(--vermilion-bright);
}
.hours-row {
  display: flex;
  justify-content: space-between;
  gap: var(--sp-3);
  padding-block: var(--sp-2);
  border-bottom: 1px solid var(--ink-line);
  font-size: var(--fs-sm);
  color: var(--paper-dim);
}
.hours-row span:last-child { color: var(--paper); font-variant-numeric: tabular-nums; }

/* Abstract line-mark, standing in for a map: three streets converging on
   a single point, drawn as inline SVG — no external map tiles needed. */
.map-mark {
  width: 100%;
  aspect-ratio: 4 / 3;
  border: 1px solid var(--ink-line);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--ink-raised);
}
.map-mark svg { width: 70%; height: 70%; }

/* -------------------------------------------------------------------------
   11. Footer
   ---------------------------------------------------------------------- */
.site-footer {
  border-top: 1px solid var(--ink-line);
  padding-block: var(--sp-5);
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3) var(--sp-5);
  align-items: center;
  justify-content: space-between;
}
.footer-brand {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: var(--fs-sm);
  color: var(--paper-dim);
}
.footer-links {
  display: flex;
  gap: var(--sp-4);
  flex-wrap: wrap;
}
.footer-links a {
  font-size: var(--fs-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--paper-dim);
}
.footer-links a:hover, .footer-links a:focus-visible { color: var(--vermilion-bright); }
.footer-note {
  width: 100%;
  margin-top: var(--sp-4);
  padding-top: var(--sp-4);
  border-top: 1px solid var(--ink-line);
  font-size: var(--fs-xs);
  color: var(--paper-dim);
  max-width: 70ch;
}

/* -------------------------------------------------------------------------
   12. Utility
   ---------------------------------------------------------------------- */
.no-scroll { overflow: hidden; }