/* 39 Doors — warm peach (#F1D2AD), navy type, subtle grain */

:root {
  --void: #e8c9a4;
  --navy-deep: #142a44;
  --navy-mid: #1e3a5a;
  --teal-deep: #2d4a62;
  --teal-glow: #3d5a72;
  --cyan-soft: #2d4f66;
  --text-ui: #142a44;
  --text-ui-muted: rgba(20, 42, 68, 0.72);
  --text-reading: #152838;
  --text-reading-muted: rgba(21, 40, 56, 0.85);
  --link-reading: #0d4a6b;
  --ice: #ffffff;
  --ice-muted: rgba(255, 255, 255, 0.92);
  --ice-dim: rgba(255, 255, 255, 0.55);
  --accent: #1a4a6b;
  --accent-strong: #0f3d5c;
  --shadow-deep: rgba(55, 42, 32, 0.16);
  --font-display: "Syne", system-ui, sans-serif;
  --font-body: "DM Sans", system-ui, sans-serif;
  --page-base: #f1d2ad;
  --tagline-purple: #221a81;
  /* Center column + equal peek on left/right (neighbors only when they exist) */
  --carousel-door-col: min(22rem, 74vw);
  --carousel-peek: max(0.75rem, calc((100vw - var(--carousel-door-col)) / 2));
}

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

html {
  -webkit-text-size-adjust: 100%;
  background-color: var(--page-base);
}

body {
  margin: 0;
  min-height: 100dvh;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-ui);
  background: var(--page-base);
}

/* Kept in DOM for layout; grain disabled so the shell stays one flat color */
.film-grain {
  display: none;
}

.app {
  position: relative;
  z-index: 1;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

/* —— Home header —— */
.home-header {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 1.35rem 1rem 0.85rem;
  flex-shrink: 0;
}

.tagline {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(0.95rem, 3.2vw, 1.15rem);
  font-weight: 800;
  letter-spacing: clamp(0.28em, 2.2vw, 0.52em);
  text-indent: clamp(0.28em, 2.2vw, 0.52em);
  text-transform: uppercase;
  text-align: center;
  color: var(--tagline-purple);
  -webkit-text-stroke: 1.15px rgba(34, 26, 129, 0.28);
  paint-order: stroke fill;
  text-shadow:
    0 1px 0 rgba(255, 255, 255, 0.55),
    0 2px 10px rgba(241, 210, 173, 0.95);
}

/* —— Carousel —— */
.carousel-wrap {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 0.5rem 0 1rem;
  /* allow 3D door swing to extend without clipping */
  overflow: visible;
}

.home-footer {
  flex-shrink: 0;
  padding: 0.15rem 1rem max(1rem, env(safe-area-inset-bottom));
  text-align: center;
}

.home-footer__hint {
  margin: 0;
  font-size: 0.72rem;
  font-weight: 500;
  font-style: italic;
  letter-spacing: 0.05em;
  color: var(--text-ui-muted);
}

.home-footer__entry {
  background: none;
  border: none;
  padding: 0.35rem 0.5rem;
  font-family: inherit;
  font-size: inherit;
  font-weight: inherit;
  font-style: inherit;
  letter-spacing: inherit;
  color: inherit;
  cursor: pointer;
  border-radius: 4px;
  transition: color 0.15s ease, background-color 0.15s ease;
}

.home-footer__entry:hover {
  color: var(--text-ui);
}

.home-footer__entry:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.home-footer__entry--visited em {
  opacity: 0.85;
}

.carousel {
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  align-items: center;
  justify-content: flex-start;
  gap: 0.75rem;
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-padding-inline: var(--carousel-peek);
  padding-inline: var(--carousel-peek);
  /* overflow-x:auto forces overflow-y to clip; extra vertical room keeps the 3D door swing visible */
  padding-block: max(1.25rem, 6vh);
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  background: var(--page-base);
}

.carousel::-webkit-scrollbar {
  display: none;
}

.door-slide {
  flex: 0 0 var(--carousel-door-col);
  width: var(--carousel-door-col);
  max-width: var(--carousel-door-col);
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  scroll-snap-align: center;
  scroll-snap-stop: always;
  list-style: none;
  background: transparent;
}

/* —— Door card (carousel) —— */
.door-scene {
  perspective: 1200px;
  perspective-origin: left center;
  width: fit-content;
  max-width: 100%;
  margin: 0 auto;
  min-height: 0;
  background: transparent;
  transform-style: preserve-3d;
  transform: translateZ(0);
}

/* Click target; 3D rotation lives on .door-face__plate so image + badge move as one rigid leaf */
.door-face {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: fit-content;
  max-width: 100%;
  min-width: 0;
  margin: 0 auto;
  padding: 0;
  cursor: pointer;
  border: none;
  background: transparent;
  box-shadow: none;
  font: inherit;
  color: inherit;
  text-align: left;
  line-height: 0;
  appearance: none;
  -webkit-appearance: none;
  -webkit-tap-highlight-color: transparent;
}

.door-face::-moz-focus-inner {
  border: 0;
  padding: 0;
}

.door-face:focus:not(:focus-visible) {
  outline: none;
}

.door-face:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

.door-face__plate {
  position: relative;
  display: block;
  width: fit-content;
  max-width: 100%;
  margin-inline: auto;
  transform-origin: left center;
  transform-style: preserve-3d;
  transition: transform 1.2s cubic-bezier(0.18, 0.78, 0.18, 1);
  border: none;
  box-shadow: none;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  isolation: isolate;
}

.door-face__img {
  display: block;
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: min(58vh, 28rem);
  margin: 0;
  border: 0;
  vertical-align: top;
  box-shadow: none;
  transform: translateZ(0);
  -webkit-transform: translateZ(0);
  -webkit-user-drag: none;
  user-select: none;
}

/* Swing open */
.door-face.is-opening .door-face__plate {
  will-change: transform;
  transform: rotateY(-78deg);
}

@media (prefers-reduced-motion: reduce) {
  .door-face.is-opening .door-face__plate {
    transform: rotateY(-78deg);
    transition-duration: 0.01ms;
  }
}

.door-slide--locked .door-face {
  opacity: 0.52;
}

.door-number {
  position: absolute;
  top: 0.55rem;
  left: 50%;
  transform: translateX(-50%);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
  /* Fixed diameter: identical for 1–2 digit day numbers */
  width: 2rem;
  height: 2rem;
  min-width: 2rem;
  min-height: 2rem;
  max-width: 2rem;
  max-height: 2rem;
  padding: 0;
  border-radius: 50%;
  flex-shrink: 0;
  line-height: 1;
  overflow: hidden;
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0;
  font-variant-numeric: tabular-nums;
  color: var(--navy-deep);
  background: rgba(255, 255, 255, 0.94);
  border: none;
  box-shadow: none;
  z-index: 2;
}

/* —— Toast —— */
.toast {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  max-width: min(90vw, 22rem);
  padding: 0.75rem 1.1rem;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  color: var(--text-reading);
  font-size: 0.88rem;
  border-radius: 4px;
  border: 1px solid rgba(255, 255, 255, 0.95);
  box-shadow: 0 12px 32px rgba(60, 45, 35, 0.12);
  z-index: 100;
  transition: opacity 0.25s ease;
}

.toast[hidden] {
  display: block;
  opacity: 0;
  pointer-events: none;
}

/* —— Content overlay (flat peach, matches main view) —— */
.content-overlay {
  position: fixed;
  inset: 0;
  z-index: 60;
  background: var(--page-base);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  color: var(--text-ui);
}

.content-overlay.content-overlay--entering {
  opacity: 0;
  transition: opacity 0.58s cubic-bezier(0.33, 0.02, 0.25, 1);
}

.content-overlay.content-overlay--entering.content-overlay--entering-active {
  opacity: 1;
}

@media (prefers-reduced-motion: reduce) {
  .content-overlay.content-overlay--entering {
    transition-duration: 0.01ms;
  }
}

.content-overlay[hidden] {
  display: none;
}

.content-overlay--entering .content-overlay__inner {
  opacity: 0;
  transform: translateY(10px);
  transition:
    opacity 0.45s ease 0.12s,
    transform 0.45s cubic-bezier(0.33, 0.02, 0.25, 1) 0.12s;
}

.content-overlay--entering.content-overlay--entering-active .content-overlay__inner {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .content-overlay--entering .content-overlay__inner {
    transition-duration: 0.01ms;
    transform: none;
  }
}

.content-overlay__inner {
  position: relative;
  z-index: 1;
  min-height: 100%;
  max-width: 36rem;
  margin: 0 auto;
  padding: 1rem 1.25rem 2.5rem;
  padding-top: max(1rem, env(safe-area-inset-top));
  padding-bottom: max(2rem, env(safe-area-inset-bottom));
}

.content-back {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-bottom: 1.5rem;
  padding: 0.45rem 0;
  background: none;
  border: none;
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-ui-muted);
  cursor: pointer;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.content-back:hover {
  color: var(--tagline-purple);
  border-bottom-color: rgba(34, 26, 129, 0.35);
}

.content-back:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.content-title {
  margin: 0 0 1.25rem;
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 3.8vw, 1.45rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: clamp(0.12em, 1.5vw, 0.28em);
  text-transform: uppercase;
  text-align: center;
  color: var(--tagline-purple);
  -webkit-text-stroke: 1.15px rgba(34, 26, 129, 0.28);
  paint-order: stroke fill;
  text-shadow:
    0 1px 0 rgba(255, 255, 255, 0.55),
    0 2px 10px rgba(241, 210, 173, 0.95);
}

.content-body {
  font-size: 1rem;
  color: var(--text-ui-muted);
}

.content-body p {
  margin: 0 0 1rem;
}

.content-body p:last-child {
  margin-bottom: 0;
}

.content-body a {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

.content-body a[target="_blank"] {
  display: inline-flex;
  align-items: baseline;
  gap: 0.18em;
  max-width: 100%;
}

.content-body a:hover {
  color: var(--text-reading);
}

.content-media {
  margin: 1.25rem 0;
  border-radius: 4px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.38);
  box-shadow:
    0 0 0 1px rgba(40, 60, 80, 0.06),
    0 8px 24px rgba(55, 42, 32, 0.12);
}

/* Prose above Spotify playlist embed (Day 24) */
.content-body--spotify-intro {
  margin-bottom: 0.25rem;
}

.content-body--spotify-intro + .content-media--spotify {
  margin-top: 0.75rem;
}

/* iframes: avoid clipping the player (some WebKit builds glitch with overflow:hidden) */
.content-media--youtube {
  overflow: visible;
}

.content-media--youtube .embed-wrap {
  overflow: hidden;
  width: 100%;
}

.content-media--youtube .embed-wrap:not(.embed-wrap--shorts) {
  max-width: min(100%, 56rem);
  margin-inline: auto;
}

.content-youtube-fallback {
  margin: 0.65rem 0 0;
  font-size: 0.85rem;
  text-align: center;
  color: var(--text-ui-muted);
}

.content-youtube-fallback a {
  color: var(--link-reading);
}

/* WebKit: occasional blank iframe until repaint; nudge compositing */
.content-youtube-iframe {
  transform: translateZ(0);
}

.content-media img {
  display: block;
  width: 100%;
  height: auto;
  vertical-align: middle;
}

/* Wide figures after prose (e.g. Day 5 study graphic) */
.content-media--figure {
  margin-top: 1.5rem;
}

.embed-wrap {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  border-radius: 4px;
  background: rgba(241, 210, 173, 0.65);
}

.embed-wrap iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* YouTube Shorts are 9:16 (height = width × 16/9 → padding-bottom 177.78%). */
.embed-wrap.embed-wrap--shorts {
  height: 0;
  padding-bottom: 177.78%;
  max-width: min(100%, 22rem);
  margin-inline: auto;
}


.embed-wrap--spotify {
  padding-bottom: 152px;
  max-width: 100%;
}

.embed-wrap--spotify iframe {
  height: 152px;
}

.link-external-icon {
  display: inline-flex;
  flex-shrink: 0;
  align-items: center;
  justify-content: center;
  margin: 0;
  color: currentColor;
  line-height: 0;
}

.link-external-icon__svg {
  width: 1em;
  height: 1em;
  display: block;
  flex-shrink: 0;
  /* Optical alignment with lowercase / body text */
  transform: translateY(0.08em);
}

.btn-link {
  display: inline-flex;
  align-items: center;
  gap: 0.22em;
  margin: 0.85rem 0;
  padding: 0.7rem 1.25rem;
  background: transparent;
  color: var(--text-ui);
  text-decoration: none;
  border-radius: 2px;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  border: 1px solid rgba(34, 26, 129, 0.35);
  transition:
    background 0.2s ease,
    border-color 0.2s ease,
    box-shadow 0.2s ease;
}

.btn-link .link-external-icon {
  color: currentColor;
}

.btn-link .link-external-icon__svg {
  transform: none;
}

.btn-link:hover {
  background: rgba(34, 26, 129, 0.06);
  border-color: rgba(34, 26, 129, 0.5);
  box-shadow: 0 4px 16px rgba(55, 42, 32, 0.1);
}

.btn-link:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.content-intro {
  margin-bottom: 1.1rem;
  font-size: 1rem;
  color: var(--text-ui-muted);
}

.content-intro p {
  margin: 0 0 0.75rem;
}

.content-intro a {
  color: inherit;
}

.content-intro a[target="_blank"] {
  display: inline-flex;
  align-items: baseline;
  gap: 0.18em;
  max-width: 100%;
}

.content-intro a:hover {
  color: var(--text-reading);
}

.learn-more {
  margin-top: 2rem;
}

.learn-more__toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 0.85rem 0;
  background: none;
  border: none;
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--tagline-purple);
  cursor: pointer;
  text-align: left;
}

.learn-more__toggle .chevron {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.25s ease;
  flex-shrink: 0;
  opacity: 0.7;
}

.learn-more__toggle .chevron__svg {
  display: block;
}

.learn-more.is-open .learn-more__toggle .chevron {
  transform: rotate(180deg);
}

.learn-more__panel {
  display: none;
  padding-bottom: 0.5rem;
  font-size: 0.95rem;
  color: var(--text-ui-muted);
}

.learn-more.is-open .learn-more__panel {
  display: block;
}

.learn-more__panel p {
  margin: 0 0 1rem;
}

.learn-more__links {
  margin: 0;
  padding: 0;
  list-style: none;
}

.learn-more__links li {
  margin-bottom: 0.5rem;
}

.learn-more__links a {
  color: inherit;
  word-break: break-word;
}

.learn-more__links a[target="_blank"] {
  display: inline-flex;
  align-items: baseline;
  gap: 0.18em;
  flex-wrap: wrap;
  max-width: 100%;
}

.learn-more__links a:hover {
  color: var(--text-reading);
}

.external-links {
  margin-top: 0.75rem;
}

.external-links a {
  display: block;
  margin-bottom: 0.35rem;
  color: var(--accent);
  word-break: break-word;
}

.external-links a:hover {
  color: var(--tagline-purple);
}

/* Full-screen image zoom (content images) */
.image-zoom-overlay {
  position: fixed;
  inset: 0;
  z-index: 70;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(12, 10, 8, 0.94);
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}

.image-zoom-overlay[hidden] {
  display: none !important;
}

.image-zoom-overlay__close {
  position: absolute;
  top: max(0.75rem, env(safe-area-inset-top));
  right: max(0.75rem, env(safe-area-inset-right));
  z-index: 2;
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.95);
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  transition: background 0.15s ease;
}

.image-zoom-overlay__close:hover {
  background: rgba(255, 255, 255, 0.22);
}

.image-zoom-overlay__close:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.image-zoom-overlay__viewport {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  touch-action: none;
  cursor: grab;
}

.image-zoom-overlay__viewport:active {
  cursor: grabbing;
}

.image-zoom-overlay__img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  transform-origin: center center;
  will-change: transform;
  -webkit-user-select: none;
  user-select: none;
}

.content-media--zoomable {
  overflow: hidden;
}

.content-media__zoom {
  display: block;
  width: 100%;
  margin: 0;
  padding: 0;
  border: none;
  background: transparent;
  cursor: zoom-in;
  border-radius: inherit;
}

.content-media__zoom:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.content-media__zoom .content-media__img {
  display: block;
  width: 100%;
  height: auto;
}

/* —— Password screen —— */

.password-screen {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: var(--page-base);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.password-screen[hidden] {
  display: none;
}

.password-screen__card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  width: 100%;
  max-width: 18rem;
}

.password-screen__label {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: lowercase;
  color: var(--text-ui-muted);
  margin: 0;
}

.password-screen__input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1.5px solid rgba(20, 42, 68, 0.2);
  border-radius: 0.75rem;
  background: rgba(255, 255, 255, 0.5);
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--text-ui);
  text-align: center;
  outline: none;
  transition: border-color 0.15s;
}

.password-screen__input::placeholder {
  color: rgba(20, 42, 68, 0.25);
  letter-spacing: 0.15em;
}

.password-screen__input:focus {
  border-color: var(--accent);
}

.password-screen__error {
  font-family: var(--font-body);
  font-size: 0.8rem;
  color: var(--accent);
  margin: 0;
  opacity: 0.75;
}

.password-screen__btn {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--navy-deep);
  color: var(--ice);
  border: none;
  border-radius: 0.75rem;
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
}

.password-screen__btn:hover {
  background: var(--navy-mid);
}

.password-screen__btn:active {
  transform: scale(0.97);
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%       { transform: translateX(-6px); }
  40%       { transform: translateX(6px); }
  60%       { transform: translateX(-4px); }
  80%       { transform: translateX(4px); }
}

.shake {
  animation: shake 0.35s ease;
}