/* ————————————————————————————————
   the night before — for Ushi
   palette: night #070B1D→#1B2650 · moon #F6F1E4 · gold #E7C982 · rose #E9ADBC
   ———————————————————————————————— */

:root {
  --night-900: #010102;
  --night-700: #04060F;
  --night-500: #0B1226;
  --card-hi:   #202B58;
  --card-lo:   #131C3E;
  --moon:      #F6F1E4;
  --gold:      #E7C982;
  --gold-soft: #F2E3B8;
  --gold-dim:  rgba(231, 201, 130, 0.45);
  --rose:      #E9ADBC;
  --ink-dim:   rgba(246, 241, 228, 0.62);

  --font-display: "Cormorant Garamond", "Georgia", serif;
  --font-digits:  "Fraunces", "Georgia", serif;
  --font-utility: "Jost", "Avenir Next", sans-serif;
}

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

/* The hidden attribute must always win, even against display rules
   on the same element — one overlay silently eating clicks was enough. */
[hidden] { display: none !important; }

html, body { height: 100%; }

/* Chrome on Android re-inflates text blocks after layout when the system
   font scale is raised ("font boosting"), making line counts jitter — we
   size our own text, so opt out. */
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }

body {
  /* moonlit glow up top, fading to true black at the horizon below */
  background:
    linear-gradient(to bottom, rgba(1, 1, 2, 0) 0%, rgba(0, 0, 0, 0.55) 78%, rgba(0, 0, 0, 0.9) 100%),
    radial-gradient(120vmax 90vmax at 50% -20%, var(--night-500) 0%, var(--night-700) 38%, var(--night-900) 100%)
    var(--night-900);
  color: var(--moon);
  font-family: var(--font-utility);
  overflow-x: hidden;
}

/* ————— fixed layers ————— */

#sky {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

#sketch {
  position: fixed;
  right: -1vw;
  bottom: -3vh;
  width: min(46vw, 580px);
  max-height: 80vh;
  object-fit: contain;
  opacity: 0.12;
  z-index: 1;
  pointer-events: none;
  -webkit-mask-image: radial-gradient(80% 80% at 60% 40%, #000 40%, transparent 96%);
          mask-image: radial-gradient(80% 80% at 60% 40%, #000 40%, transparent 96%);
  animation: sketchHover 11s ease-in-out infinite alternate;
}

@keyframes sketchHover {
  from { transform: translate(0, -9px) rotate(-0.5deg); }
  50%  { transform: translate(5px, 3px) rotate(0.2deg); }
  to   { transform: translate(-4px, 9px) rotate(0.6deg); }
}

#celebration {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 6;
  pointer-events: none;
}

/* ————— the gate ————— */

.gate {
  position: fixed;
  inset: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background: radial-gradient(90vmax 70vmax at 50% 10%, rgba(27, 38, 80, 0.35), rgba(7, 11, 29, 0.55));
  transition: opacity 1.2s ease;
}

.gate.leaving { opacity: 0; pointer-events: none; }

.gate-card {
  width: min(92vw, 30rem);
  text-align: center;
  padding: 2.75rem 2.25rem 2.5rem;
  border: 1px solid rgba(231, 201, 130, 0.22);
  border-radius: 1.25rem;
  background: linear-gradient(168deg, rgba(32, 43, 88, 0.55), rgba(14, 22, 49, 0.72));
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow:
    0 30px 80px rgba(3, 5, 16, 0.55),
    inset 0 1px 0 rgba(246, 241, 228, 0.08);
}

.gate-card.shake { animation: shake 0.45s ease; }

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-9px); }
  40% { transform: translateX(8px); }
  60% { transform: translateX(-5px); }
  80% { transform: translateX(3px); }
}

.gate-eyebrow,
.eyebrow {
  font-family: var(--font-utility);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--gold);
}

.gate-title {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 500;
  font-size: clamp(1.7rem, 5.5vw, 2.3rem);
  line-height: 1.15;
  margin-top: 0.9rem;
  color: var(--moon);
}

.gate-sub {
  margin-top: 0.65rem;
  font-size: 0.95rem;
  color: var(--ink-dim);
}

.gate-progress {
  margin-top: 1.4rem;
  font-size: 0.95rem;
  letter-spacing: 0.6em;
  color: var(--gold-dim);
}

.gate-progress .lit { color: var(--gold); text-shadow: 0 0 12px rgba(231, 201, 130, 0.7); }

.gate-question {
  margin-top: 1.15rem;
  min-height: 2.6em;
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(1.15rem, 3.6vw, 1.4rem);
  line-height: 1.35;
  color: var(--gold-soft);
}

.gate-form {
  margin-top: 1.1rem;
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  justify-content: center;
}

.gate-form input {
  flex: 1 1 12rem;
  min-width: 0;
  padding: 0.8rem 1.1rem;
  font-family: var(--font-utility);
  font-size: 1rem;
  color: var(--moon);
  background: rgba(7, 11, 29, 0.55);
  border: 1px solid rgba(231, 201, 130, 0.3);
  border-radius: 0.7rem;
  outline: none;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.gate-form input::placeholder { color: rgba(246, 241, 228, 0.35); }

.gate-form input:focus-visible {
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(231, 201, 130, 0.18);
}

.gate-form button {
  padding: 0.8rem 1.3rem;
  font-family: var(--font-utility);
  font-size: 0.92rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--night-900);
  background: linear-gradient(160deg, var(--gold-soft), var(--gold));
  border: none;
  border-radius: 0.7rem;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.25s ease;
  box-shadow: 0 8px 22px rgba(231, 201, 130, 0.22);
}

.gate-form button:hover { transform: translateY(-1px); box-shadow: 0 10px 26px rgba(231, 201, 130, 0.3); }
.gate-form button:focus-visible { outline: 2px solid var(--gold-soft); outline-offset: 3px; }
.gate-form button:active { transform: translateY(0); }

.gate-tease {
  margin-top: 1rem;
  min-height: 1.4em;
  font-size: 0.92rem;
  color: var(--rose);
}

.gate-hint {
  margin-top: 0.4rem;
  min-height: 1.3em;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.02rem;
  color: var(--gold-soft);
}

.gate-hint::before { content: "psst… "; color: var(--gold-dim); }
.gate-hint:empty::before { content: none; }

.gate.solved .gate-title { color: var(--gold-soft); }

/* ————— the scene ————— */

.scene {
  position: relative;
  z-index: 2;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding: 0 1.25rem 3rem;
  opacity: 0;
  transition: opacity 1.4s ease;
}

.scene.visible { opacity: 1; }

/* the moon — photos glowing inside a floating moon */

.moon-stage {
  position: relative;
  margin-top: clamp(2rem, 6vh, 4rem);
  animation: float 8s ease-in-out infinite alternate;
}

@keyframes float {
  from { transform: translateY(-13px) rotate(-1deg); }
  to   { transform: translateY(13px) rotate(1deg); }
}

.moon {
  position: relative;
  width: clamp(10rem, 26vw, 13.5rem);
  height: clamp(10rem, 26vw, 13.5rem);
  border-radius: 50%;
  box-shadow:
    0 0 0 1px rgba(246, 241, 228, 0.22),
    0 0 50px rgba(242, 227, 184, 0.4),
    0 0 130px rgba(231, 201, 130, 0.22);
}

.moon-halo {
  position: absolute;
  inset: -60%;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(242, 227, 184, 0.22) 26%,
    rgba(242, 227, 184, 0.07) 52%,
    transparent 70%
  );
  pointer-events: none;
  animation: haloBreathe 6s ease-in-out infinite alternate;
}

@keyframes haloBreathe {
  from { opacity: 0.75; transform: scale(0.97); }
  to   { opacity: 1; transform: scale(1.06); }
}

.locket-photos,
.locket-photos img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  overflow: hidden;
}

.locket-photos img {
  object-fit: cover;
  opacity: 0;
  transition: opacity 2.8s ease;
  /* moonlight grade: silvery, softly warm */
  filter: grayscale(0.3) sepia(0.16) brightness(1.05) contrast(0.97);
  transform: scale(1.01);
}

.locket-photos img.visible {
  opacity: 1;
  animation: moondrift 12s ease-in-out forwards;
}

@keyframes moondrift {
  from { transform: scale(1.01); }
  to   { transform: scale(1.11); }
}

/* faint craters, like the photo is printed on the moon's face */
.moon-craters {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  pointer-events: none;
  background:
    radial-gradient(9% 9% at 24% 30%, rgba(246, 241, 228, 0.16), transparent 70%),
    radial-gradient(6% 6% at 68% 22%, rgba(246, 241, 228, 0.13), transparent 70%),
    radial-gradient(12% 12% at 74% 66%, rgba(246, 241, 228, 0.11), transparent 70%),
    radial-gradient(5% 5% at 38% 74%, rgba(246, 241, 228, 0.14), transparent 70%),
    radial-gradient(7% 7% at 52% 46%, rgba(246, 241, 228, 0.08), transparent 70%);
  mix-blend-mode: screen;
}

/* crescent shading: lit on the upper-left, night on the lower-right */
.moon-shade {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  pointer-events: none;
  background: radial-gradient(
    circle at 30% 26%,
    transparent 38%,
    rgba(1, 1, 2, 0.24) 64%,
    rgba(1, 1, 2, 0.62) 100%
  );
  box-shadow:
    inset 8px 8px 28px rgba(246, 241, 228, 0.16),
    inset -4px -6px 30px rgba(1, 1, 2, 0.4);
}

/* heading */

.heading { text-align: center; margin-top: clamp(1.5rem, 4vh, 2.75rem); }

.headline {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 500;
  font-size: clamp(2rem, 6.5vw, 3.6rem);
  line-height: 1.08;
  margin-top: 0.8rem;
  color: var(--moon);
  text-shadow: 0 2px 40px rgba(27, 38, 80, 0.8);
}

.headline em {
  font-style: italic;
  color: var(--gold-soft);
}

/* the flip clock */

.clock {
  display: flex;
  align-items: flex-start;
  gap: clamp(0.5rem, 2vw, 1.4rem);
  margin-top: clamp(1.75rem, 5vh, 3.25rem);
}

.clock-sep {
  align-self: center;
  padding-bottom: 2.2rem;
  color: var(--gold-dim);
  font-size: 1.4rem;
  user-select: none;
}

.unit { text-align: center; }

.unit-label {
  margin-top: 0.85rem;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--ink-dim);
}

.plackard {
  position: relative;
  width: clamp(4.1rem, 13vw, 6.4rem);
  height: clamp(5.2rem, 16.5vw, 8rem);
  border-radius: clamp(0.55rem, 1.6vw, 0.85rem);
  /* Flat stacking context (z-index rules the layers, no z-fighting);
     each card gets its own vanishing point for the flap rotation. */
  perspective: 520px;
  box-shadow:
    0 18px 45px rgba(3, 5, 16, 0.65),
    0 2px 8px rgba(3, 5, 16, 0.5);
}

/* hinge notches */
.plackard::before,
.plackard::after {
  content: "";
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 14%;
  background: var(--night-900);
  z-index: 5;
  border-radius: 3px;
}
.plackard::before { left: -1px; }
.plackard::after  { right: -1px; }

.half, .flap {
  position: absolute;
  left: 0;
  width: 100%;
  height: 50%;
  overflow: hidden;
  display: flex;
  justify-content: center;
  backface-visibility: hidden;
}

.half .val, .flap .val {
  font-family: var(--font-digits);
  font-weight: 600;
  font-size: clamp(3rem, 9.5vw, 4.7rem);
  line-height: clamp(5.2rem, 16.5vw, 8rem);
  height: clamp(5.2rem, 16.5vw, 8rem);
  color: var(--moon);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  text-shadow: 0 1px 0 rgba(3, 5, 16, 0.6);
}

.half.top, .flap-top {
  top: 0;
  align-items: flex-start;
  border-radius: clamp(0.55rem, 1.6vw, 0.85rem) clamp(0.55rem, 1.6vw, 0.85rem) 0 0;
  background: linear-gradient(180deg, var(--card-hi), #1A2450);
  border: 1px solid rgba(231, 201, 130, 0.16);
  border-bottom: 1px solid rgba(3, 5, 16, 0.85);
}

.half.bottom, .flap-bottom {
  bottom: 0;
  align-items: flex-end;
  border-radius: 0 0 clamp(0.55rem, 1.6vw, 0.85rem) clamp(0.55rem, 1.6vw, 0.85rem);
  background: linear-gradient(180deg, #182148, var(--card-lo));
  border: 1px solid rgba(231, 201, 130, 0.12);
  border-top: 1px solid rgba(246, 241, 228, 0.06);
}

.flap { z-index: 3; will-change: transform; visibility: hidden; }
.flap-top    { transform-origin: 50% 100%; }
.flap-bottom { transform-origin: 50% 0%; }
.flap.animating, .flap.resting { visibility: visible; }

/* Keep the static halves on GPU layers too, so their glyphs rasterize
   identically to the flaps and handoffs never shimmer. */
.half { transform: translateZ(0); }

/* the meeting line */

.meeting-line {
  margin-top: clamp(1.5rem, 4vh, 2.5rem);
  font-size: 0.82rem;
  font-weight: 400;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-dim);
}

.meeting-line strong { color: var(--gold); font-weight: 500; }

.story-line {
  margin-top: 1.1rem;
  /* room for two wrapped lines: rotating texts must not change page height
     (a growing/shrinking page flickers the scrollbar on phones) */
  min-height: 2.9em;
  line-height: 1.45;
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(1rem, 2.6vw, 1.2rem);
  color: rgba(231, 201, 130, 0.75);
  opacity: 1;
  transition: opacity 0.7s ease;
}

.story-line.fading { opacity: 0; }

/* scene controls — lock & sound, quiet in the corners */

.scene-controls {
  position: fixed;
  top: 1.1rem;
  left: 1.1rem;
  right: 1.1rem;
  display: flex;
  justify-content: space-between;
  z-index: 7;
  pointer-events: none;
}

.scene-controls button {
  pointer-events: auto;
  width: 2.6rem;
  height: 2.6rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold-dim);
  background: rgba(7, 13, 34, 0.45);
  border: 1px solid rgba(231, 201, 130, 0.22);
  border-radius: 50%;
  cursor: pointer;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition: color 0.25s ease, border-color 0.25s ease, transform 0.15s ease;
}

.scene-controls button:hover { color: var(--gold); border-color: var(--gold-dim); transform: translateY(-1px); }
.scene-controls button:focus-visible { outline: 2px solid var(--gold-soft); outline-offset: 3px; }

/* celebration state */

body.celebrating .eyebrow { color: var(--rose); }
body.celebrating .headline em { color: var(--rose); }

/* ————— small screens ————— */

@media (max-width: 560px) {
  .clock { flex-wrap: wrap; justify-content: center; row-gap: 1.1rem; }
  .clock-sep { display: none; }
  .clock { gap: 0.6rem; }
  .plackard { width: clamp(4rem, 20vw, 5rem); height: clamp(5rem, 25vw, 6.2rem); }
  .half .val, .flap .val {
    font-size: clamp(2.7rem, 13vw, 3.4rem);
    line-height: clamp(5rem, 25vw, 6.2rem);
    height: clamp(5rem, 25vw, 6.2rem);
  }
  #sketch { width: 78vw; right: -12vw; opacity: 0.11; }
}

/* ————— reduced motion ————— */

@media (prefers-reduced-motion: reduce) {
  .moon-stage, .moon-halo, .locket-photos img.visible, #sketch { animation: none; }
  .gate, .scene, .locket-photos img { transition: none; }
  .gate-card.shake { animation: none; }
}