:root {
  --ink: #1b1714;
  --panel: rgba(255, 255, 255, 0.94);
  --line: rgba(27, 23, 20, 0.12);
  --paper: #1b1714;
  --muted: rgba(27, 23, 20, 0.58);
  --gold: #e07a32;
  --gold-soft: rgba(224, 122, 50, 0.16);
  --teal: #6aa84f;
  --teal-soft: rgba(106, 168, 79, 0.2);
  --coral: #d94b7a;
  --coral-soft: rgba(217, 75, 122, 0.18);
  --shared: #c23b3b;
  --radius: 18px;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --font-display: "Bricolage Grotesque", Georgia, serif;
  --font-body: "Source Sans 3", system-ui, sans-serif;
  --logo-space: clamp(118px, 34vw, 156px);
  --app-width: 440px;
  --bg-size: 62%;
}

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

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100dvh;
  font-family: var(--font-body);
  color: var(--ink);
  background: #ffffff;
  overflow-x: hidden;
}

.atmosphere {
  position: fixed;
  inset: 0;
  z-index: -2;
  background-color: #ffffff;
  background-image: url("assets/movievenn-bg.jpg");
  background-repeat: no-repeat;
  background-position: top center;
  background-size: var(--bg-size) auto;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

body.has-results .atmosphere {
  opacity: 0;
}

.app {
  width: min(100%, var(--app-width));
  margin: 0 auto;
  padding: calc(var(--logo-space) + var(--safe-top) + 8px) 20px calc(36px + var(--safe-bottom));
  transition: padding 0.25s ease;
}

body.has-results .app {
  padding-top: calc(20px + var(--safe-top));
}

body.has-results .hero {
  display: none;
}

body.has-results .uploads {
  display: none;
}

.hero {
  text-align: center;
  animation: rise 0.7s ease both;
}

.tagline {
  margin: 0 auto;
  max-width: 22rem;
  font-size: 1.05rem;
  line-height: 1.45;
  color: var(--muted);
}

.uploads {
  display: grid;
  gap: 12px;
  margin-top: 22px;
  animation: rise 0.7s ease 0.12s both;
}

.upload {
  display: grid;
  gap: 6px;
  padding: 18px 18px 16px;
  border: 1.5px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: 0 10px 28px rgba(27, 23, 20, 0.1);
  transition:
    border-color 0.25s ease,
    transform 0.25s ease,
    box-shadow 0.25s ease;
}

.upload.is-dragover {
  border-color: #e07a32;
  box-shadow: 0 12px 32px rgba(224, 122, 50, 0.18);
}

.upload__pick {
  position: relative;
  display: grid;
  gap: 4px;
  cursor: pointer;
  padding-top: 4px;
}

.upload__pick:active {
  opacity: 0.88;
}

.upload.is-loaded {
  background: #fff;
}

.upload[data-side="a"].is-loaded {
  border-color: rgba(106, 168, 79, 0.7);
}

.upload[data-side="b"].is-loaded {
  border-color: rgba(217, 75, 122, 0.7);
}

.upload__input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.upload__label {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
}

.upload__name {
  width: 100%;
  border: 0;
  background: transparent;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  padding: 0;
  outline: none;
}

.upload__cta {
  color: var(--gold);
  font-weight: 600;
  font-size: 0.98rem;
}

.upload.is-loaded .upload__cta {
  color: var(--teal);
}

.upload[data-side="b"].is-loaded .upload__cta {
  color: var(--coral);
}

.upload__meta {
  font-size: 0.88rem;
  color: var(--muted);
}

.results {
  margin-top: 28px;
  animation: rise 0.55s ease both;
}

.venn-wrap {
  display: grid;
  gap: 14px;
}

.venn {
  width: 100%;
  height: auto;
  overflow: visible;
}

.venn__circle {
  fill-opacity: 0.38;
  stroke-width: 2.5;
  transition:
    fill-opacity 0.25s ease,
    stroke-width 0.25s ease;
  cursor: pointer;
}

.venn__circle--a {
  fill: var(--teal);
  stroke: #4f8a38;
}

.venn__circle--b {
  fill: var(--coral);
  stroke: #b83266;
}

.venn.is-zone-onlyA .venn__circle--a,
.venn.is-zone-onlyB .venn__circle--b,
.venn.is-zone-both .venn__circle--a,
.venn.is-zone-both .venn__circle--b {
  fill-opacity: 0.55;
  stroke-width: 3;
}

.venn.is-zone-onlyA .venn__circle--b,
.venn.is-zone-onlyB .venn__circle--a {
  fill-opacity: 0.16;
}

.venn__count {
  font-family: var(--font-display);
  font-size: 1.55rem;
  font-weight: 800;
  fill: var(--ink);
  pointer-events: none;
}

.venn__zone-label {
  font-family: var(--font-body);
  font-size: 0.7rem;
  fill: var(--muted);
  letter-spacing: 0.04em;
  pointer-events: none;
}

.zone-tabs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
}

.zone-tab {
  appearance: none;
  border: 1.5px solid var(--line);
  background: rgba(255, 255, 255, 0.8);
  color: var(--muted);
  border-radius: 999px;
  padding: 10px 4px;
  font: 600 0.78rem/1 var(--font-body);
  letter-spacing: 0.01em;
  cursor: pointer;
  transition:
    background 0.2s ease,
    color 0.2s ease,
    border-color 0.2s ease;
}

.zone-tab.is-active {
  color: #fff;
  background: #c23b3b;
  border-color: #c23b3b;
}

.list-panel {
  margin-top: 18px;
  border: 1.5px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: 0 10px 28px rgba(27, 23, 20, 0.08);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  overflow: hidden;
}

.list-toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 12px 0;
}

.search {
  flex: 1;
}

.search input {
  width: 100%;
  border: 1.5px solid var(--line);
  background: #fff;
  color: var(--ink);
  border-radius: 12px;
  padding: 11px 12px;
  font: 500 1rem/1.2 var(--font-body);
  outline: none;
}

.search input::placeholder {
  color: rgba(27, 23, 20, 0.38);
}

.search input:focus {
  border-color: #e07a32;
}

.list-count {
  margin: 0;
  white-space: nowrap;
  font-size: 0.82rem;
  color: var(--muted);
}

.movie-list {
  list-style: none;
  margin: 0;
  padding: 8px 4px 10px;
  max-height: min(48vh, 420px);
  overflow: auto;
  -webkit-overflow-scrolling: touch;
}

.movie-list li {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4px 10px;
  padding: 12px 12px;
  border-bottom: 1px solid rgba(27, 23, 20, 0.06);
  animation: fade-row 0.35s ease both;
}

.movie-list li:last-child {
  border-bottom: 0;
}

.movie-list a {
  color: var(--ink);
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  line-height: 1.25;
}

.movie-list a:active {
  color: #c23b3b;
}

.movie-year {
  color: var(--muted);
  font-size: 0.88rem;
  align-self: start;
}

.movie-badge {
  grid-column: 1 / -1;
  width: fit-content;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 999px;
  background: var(--gold-soft);
  color: #b04a16;
}

.movie-badge--a {
  background: var(--teal-soft);
  color: #3d6e2c;
}

.movie-badge--b {
  background: var(--coral-soft);
  color: #a32658;
}

.empty {
  margin: 0;
  padding: 28px 16px 32px;
  text-align: center;
  color: var(--muted);
}

.reset {
  display: block;
  width: 100%;
  margin-top: 14px;
  appearance: none;
  border: 1.5px solid var(--line);
  background: #fff;
  color: var(--muted);
  border-radius: 14px;
  padding: 14px;
  font: 600 0.95rem/1 var(--font-body);
  cursor: pointer;
}

.reset:active {
  color: var(--ink);
  border-color: rgba(27, 23, 20, 0.35);
}

.hint {
  margin: 28px 0 0;
  text-align: center;
  font-size: 0.86rem;
  line-height: 1.45;
  color: var(--muted);
  animation: rise 0.7s ease 0.22s both;
}

.hint code {
  font-size: 0.82em;
  color: #c23b3b;
}

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

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fade-row {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (min-width: 520px) {
  .uploads {
    grid-template-columns: 1fr 1fr;
  }
}

/* Desktop / wide layouts */
@media (min-width: 768px) {
  :root {
    --logo-space: 188px;
    --bg-size: 360px;
    --app-width: 640px;
    --radius: 20px;
  }

  body:not(.has-results) .atmosphere {
    background-position: top center;
  }

  body:not(.has-results) .app {
    padding-top: calc(var(--logo-space) + 8px);
    padding-bottom: 48px;
  }

  .uploads {
    gap: 16px;
    margin-top: 4px;
  }

  .upload {
    padding: 22px 22px 18px;
  }

  .upload__name {
    font-size: 1.5rem;
  }

  .upload__cta {
    font-size: 1.05rem;
  }

  .hint {
    margin-top: 18px;
    font-size: 0.95rem;
    max-width: 36rem;
    margin-left: auto;
    margin-right: auto;
  }

  body.has-results .app {
    width: min(100%, 960px);
    padding: 36px 28px 48px;
  }

  body.has-results .results {
    display: grid;
    grid-template-columns: minmax(280px, 380px) 1fr;
    grid-template-rows: auto auto;
    gap: 20px 28px;
    margin-top: 0;
    align-items: start;
  }

  body.has-results .venn-wrap {
    grid-column: 1;
    grid-row: 1;
  }

  body.has-results .list-panel {
    grid-column: 2;
    grid-row: 1 / span 2;
    margin-top: 0;
    min-height: 520px;
    display: flex;
    flex-direction: column;
  }

  body.has-results .movie-list {
    max-height: none;
    flex: 1;
  }

  body.has-results .reset {
    grid-column: 1;
    grid-row: 2;
    margin-top: 0;
    width: auto;
  }

  .zone-tab {
    padding: 12px 8px;
    font-size: 0.85rem;
  }

  .zone-tab:hover:not(.is-active) {
    border-color: rgba(27, 23, 20, 0.28);
    color: var(--ink);
  }

  .upload:hover {
    box-shadow: 0 14px 34px rgba(27, 23, 20, 0.12);
  }

  .reset:hover {
    color: var(--ink);
    border-color: rgba(27, 23, 20, 0.35);
  }

  .movie-list a:hover {
    color: #c23b3b;
  }
}

@media (min-width: 1100px) {
  :root {
    --logo-space: 198px;
    --bg-size: 380px;
    --app-width: 680px;
  }

  body.has-results .app {
    width: min(100%, 1080px);
  }
}