:root {
  color-scheme: dark;
  --bg: #050816;
  --panel: rgba(7, 17, 36, 0.76);
  --panel-strong: rgba(6, 16, 31, 0.88);
  --line: rgba(255, 255, 255, 0.1);
  --text: #f8fafc;
  --muted: rgba(226, 232, 240, 0.74);
  --title-pink: #f05aa8;
  --title-purple: #d774de;
  --title-blue: #7aa7ff;
  --title-gradient: linear-gradient(90deg, var(--title-pink) 0%, var(--title-purple) 50%, var(--title-blue) 100%);
  --shadow-card: 0 18px 50px rgba(4, 7, 22, 0.48), inset 0 1px 0 rgba(255, 255, 255, 0.045);
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
  max-width: 100%;
  overflow-x: hidden;
}

body {
  margin: 0;
  background:
    linear-gradient(135deg, #1b1030 0%, #4f1f5f 34%, #b03a78 68%, #f1a94e 100%);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  content: "";
}

body::before {
  background:
    linear-gradient(180deg, rgba(5, 8, 22, 0.48), rgba(5, 8, 22, 0.72)),
    radial-gradient(circle at 15% 0%, rgba(255, 255, 255, 0.18), transparent 24rem);
}

button,
input {
  font: inherit;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  cursor: pointer;
}

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

.shell {
  display: flex;
  width: min(100%, 1440px);
  min-height: 100vh;
  flex-direction: column;
  gap: 1.75rem;
  margin: 0 auto;
  padding: 1.75rem 1rem 2.25rem;
}

.hero {
  display: flex;
  flex-direction: column;
  gap: 1.65rem;
}

.hero-copy {
  min-width: 0;
}

.hero-actions {
  display: grid;
  gap: 0.85rem;
  align-items: start;
}

h1 {
  margin: 0;
  width: fit-content;
  max-width: 100%;
  background: var(--title-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-family: "Playfair Display", Georgia, serif;
  font-size: clamp(2.05rem, 7vw, 3rem);
  font-weight: 800;
  line-height: 1.2;
  padding-bottom: 0.1em;
  letter-spacing: 0;
  text-shadow: none;
}

.tagline {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  margin: 0.55rem 0 0;
  color: #f1d8df;
  font-family: "Cormorant Garamond", Georgia, serif;
  font-size: clamp(0.92rem, 2.4vw, 1.08rem);
  font-weight: 400;
  line-height: 1.2;
}

.spark,
.search-icon {
  display: inline-block;
  width: 1rem;
  height: 1rem;
}

.spark {
  width: 0.72rem;
  height: 0.72rem;
  background: linear-gradient(135deg, #ffd166, #f68c46);
  clip-path: polygon(50% 0, 61% 35%, 100% 50%, 61% 65%, 50% 100%, 39% 65%, 0 50%, 39% 35%);
}

.search-wrap {
  display: flex;
  min-height: 3rem;
  width: 100%;
  align-items: center;
  gap: 0.75rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(2, 6, 23, 0.42);
  padding: 0 1.25rem;
  color: #cbd5e1;
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(18px);
  transition: box-shadow 160ms ease, border-color 160ms ease;
}

.search-wrap:focus-within {
  border-color: rgba(216, 180, 254, 0.5);
  box-shadow: 0 0 32px rgba(216, 101, 255, 0.24);
}

.search-icon {
  position: relative;
  flex: 0 0 auto;
  border: 2px solid #94a3b8;
  border-radius: 999px;
}

.search-icon::after {
  position: absolute;
  right: -0.35rem;
  bottom: -0.25rem;
  width: 0.48rem;
  height: 2px;
  content: "";
  background: #94a3b8;
  transform: rotate(45deg);
}

.search-wrap input {
  min-width: 0;
  flex: 1;
  border: 0;
  outline: 0;
  background: transparent;
  color: #f1f5f9;
  font-size: 0.9rem;
}

.search-wrap input::placeholder {
  color: #94a3b8;
}

.filters {
  display: flex;
  gap: 1rem;
  overflow-x: auto;
  padding: 0.25rem 0 0.45rem;
}

.chip {
  position: relative;
  isolation: isolate;
  min-height: 2.5rem;
  flex: 0 0 auto;
  border: 1px solid transparent;
  border-radius: 999px;
  background:
    linear-gradient(rgba(2, 6, 23, 0.9), rgba(2, 6, 23, 0.9)) padding-box,
    linear-gradient(rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.1)) border-box;
  color: #cbd5e1;
  padding: 0 1.25rem;
  font-size: 0.88rem;
  font-weight: 500;
  transition: color 160ms ease, background 160ms ease;
}

.chip:hover,
.chip[aria-pressed="true"] {
  animation: rotate-gradient-border 2.8s linear infinite;
  background:
    linear-gradient(rgba(2, 6, 23, 0.92), rgba(2, 6, 23, 0.92)) padding-box,
    conic-gradient(
        from var(--gradient-angle),
        var(--title-pink),
        var(--title-purple),
        var(--title-blue),
        var(--title-purple),
        var(--title-pink)
      )
      border-box;
  color: #fff;
}

@property --gradient-angle {
  syntax: "<angle>";
  inherits: false;
  initial-value: 0deg;
}

@keyframes rotate-gradient-border {
  to {
    --gradient-angle: 360deg;
  }
}

.grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.35rem;
}

.card {
  display: block;
  height: 100%;
  border: 0;
  border-radius: 1.15rem;
  background: transparent;
  padding: 0;
  text-align: left;
}

.card-inner {
  animation: rotate-gradient-border 3.8s linear infinite;
  height: 100%;
  overflow: hidden;
  border: 3px solid transparent;
  border-radius: 1.15rem;
  background:
    linear-gradient(145deg, rgba(9, 13, 34, 0.92), rgba(13, 10, 32, 0.9)) padding-box,
    conic-gradient(
        from var(--gradient-angle),
        var(--title-pink),
        var(--title-purple),
        var(--title-blue),
        var(--title-purple),
        var(--title-pink)
      )
      border-box;
  padding: 0;
  box-shadow:
    0 22px 70px rgba(2, 6, 23, 0.42),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(20px);
  transition: transform 220ms ease, box-shadow 220ms ease;
}

.card:hover .card-inner,
.card:focus-visible .card-inner {
  background:
    linear-gradient(145deg, rgba(9, 13, 34, 0.94), rgba(13, 10, 32, 0.92)) padding-box,
    conic-gradient(
        from var(--gradient-angle),
        var(--title-pink),
        var(--title-purple),
        var(--title-blue),
        var(--title-purple),
        var(--title-pink)
      )
      border-box;
  box-shadow:
    0 0 30px rgba(215, 116, 222, 0.22),
    0 0 56px rgba(122, 167, 255, 0.16),
    0 28px 90px rgba(2, 6, 23, 0.52),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
  transform: translateY(-0.35rem);
}

.card:focus-visible,
.chip:focus-visible {
  outline: 2px solid rgba(216, 180, 254, 0.9);
  outline-offset: 3px;
}

.preview {
  position: relative;
  isolation: isolate;
  aspect-ratio: 16 / 9;
  width: 100%;
  margin: 0;
  overflow: hidden;
  border: 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 1.08rem 1.08rem 0 0;
  background: rgba(3, 7, 18, 0.72);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.08),
    0 14px 34px rgba(0, 0, 0, 0.18);
}

.preview::before,
.puzzle-hero-media::before,
.solution-media::before {
  position: absolute;
  inset: 0;
  z-index: -1;
  content: "";
}

.preview.rose::before,
.puzzle-hero-media.rose::before,
.solution-media.rose::before {
  background:
    radial-gradient(circle at 24% 18%, rgba(251, 113, 133, 0.22), transparent 26rem),
    radial-gradient(circle at 82% 80%, rgba(56, 189, 248, 0.13), transparent 20rem);
}

.preview.violet::before,
.puzzle-hero-media.violet::before,
.solution-media.violet::before {
  background:
    radial-gradient(circle at 35% 12%, rgba(167, 139, 250, 0.22), transparent 24rem),
    radial-gradient(circle at 78% 78%, rgba(45, 212, 191, 0.14), transparent 20rem);
}

.preview.teal::before,
.puzzle-hero-media.teal::before,
.solution-media.teal::before {
  background:
    radial-gradient(circle at 30% 18%, rgba(45, 212, 191, 0.22), transparent 24rem),
    radial-gradient(circle at 80% 78%, rgba(122, 167, 255, 0.14), transparent 20rem);
}

.preview.amber::before,
.puzzle-hero-media.amber::before,
.solution-media.amber::before {
  background:
    radial-gradient(circle at 28% 22%, rgba(251, 191, 36, 0.22), transparent 24rem),
    radial-gradient(circle at 78% 76%, rgba(240, 90, 168, 0.14), transparent 20rem);
}

.preview.cyan::before,
.puzzle-hero-media.cyan::before,
.solution-media.cyan::before {
  background:
    radial-gradient(circle at 32% 16%, rgba(94, 212, 245, 0.22), transparent 24rem),
    radial-gradient(circle at 76% 80%, rgba(61, 184, 160, 0.14), transparent 20rem);
}

.preview img,
.puzzle-hero-media img,
.solution-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}

.preview img {
  transform: scale(1.04);
}

.puzzle-hero-media img {
  object-fit: cover;
}

.solution-media img {
  object-fit: contain;
  padding: 0;
}

.card-copy {
  padding: 1.35rem 1rem 1rem;
}

h2 {
  margin: 0;
  color: #f8efe6;
  font-family: "Cormorant Garamond", Georgia, serif;
  font-size: 1.95rem;
  font-weight: 500;
  line-height: 1;
  letter-spacing: 0;
}

.badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.badge {
  display: inline-flex;
  min-height: 1.75rem;
  align-items: center;
  border: 1px solid rgba(196, 181, 253, 0.2);
  border-radius: 999px;
  background: rgba(139, 92, 246, 0.13);
  color: #ede9fe;
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
}

.empty {
  margin: 2rem 0;
  color: var(--muted);
  text-align: center;
}

.detail-shell {
  max-width: 1240px;
}

.back-link {
  display: inline-flex;
  min-height: 2.6rem;
  align-items: center;
  gap: 0.55rem;
  width: fit-content;
  border: 1px solid #ff9fba;
  border-radius: 999px;
  background: rgba(12, 10, 28, 0.72);
  color: #f8eef5;
  padding: 0 1rem;
  font-family: Inter, ui-sans-serif, system-ui, sans-serif;
  font-size: 0.86rem;
  font-weight: 600;
  transition: background 160ms ease, border-color 160ms ease, transform 160ms ease;
}

.back-link:hover {
  border-color: #ffc0d1;
  background: rgba(25, 17, 45, 0.9);
  color: #fff;
  transform: translateY(-1px);
}

.back-link span[aria-hidden="true"] {
  font-size: 1.05rem;
  line-height: 1;
}

.top-nav-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
}

/* ── Puzzle detail page: top image / bottom description ── */

.puzzle-page-card {
  display: grid;
  gap: 0;
  border: 1px solid transparent;
  border-radius: 1.35rem;
  background:
    linear-gradient(145deg, rgba(9, 13, 34, 0.94), rgba(13, 10, 32, 0.92)) padding-box,
    linear-gradient(135deg, rgba(240, 90, 168, 0.72), rgba(122, 167, 255, 0.72)) border-box;
  overflow: hidden;
  box-shadow:
    0 28px 90px rgba(2, 6, 23, 0.52),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.puzzle-hero-media {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  margin: 0;
  overflow: hidden;
  border: 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(3, 7, 18, 0.72);
}

.puzzle-hero-media img {
  object-fit: cover;
}

.puzzle-description {
  padding: 1.75rem 1.25rem 2rem;
  display: grid;
  align-content: start;
  gap: 0.8rem;
}

.puzzle-description h1 {
  background: var(--title-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-size: clamp(1.8rem, 4.2vw, 2.7rem);
  line-height: 1.18;
  display: inline-block;
}

.puzzle-statement {
  margin: 0;
  max-width: 48rem;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.65;
}

.solution-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin-top: 0.5rem;
  min-height: 2.8rem;
  width: fit-content;
  border: 1px solid rgba(167, 139, 250, 0.5);
  border-radius: 999px;
  background:
    linear-gradient(135deg, rgba(167, 139, 250, 0.2), rgba(240, 164, 202, 0.11)),
    rgba(28, 19, 61, 0.68);
  color: #f8eef5;
  padding: 0 1.25rem;
  font-size: 0.9rem;
  font-weight: 700;
  white-space: nowrap;
  box-shadow:
    0 0 24px rgba(167, 139, 250, 0.16),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
  transition: border-color 160ms ease, background 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

.solution-cta:hover {
  border-color: rgba(216, 180, 254, 0.82);
  background:
    linear-gradient(135deg, rgba(167, 139, 250, 0.28), rgba(240, 164, 202, 0.16)),
    rgba(37, 26, 75, 0.78);
  box-shadow:
    0 0 30px rgba(167, 139, 250, 0.24),
    0 0 18px rgba(240, 164, 202, 0.12),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
  transform: translateY(-1px);
}

.solution-cta-icon {
  font-size: 0.8rem;
}

/* ── Solution page: left image / right solution ── */

.solution-page-card {
  display: grid;
  gap: 1.75rem;
  border: 1px solid transparent;
  border-radius: 1.35rem;
  background:
    linear-gradient(145deg, rgba(9, 13, 34, 0.94), rgba(13, 10, 32, 0.92)) padding-box,
    linear-gradient(135deg, rgba(240, 90, 168, 0.72), rgba(122, 167, 255, 0.72)) border-box;
  min-height: 34rem;
  padding: 1.25rem;
  box-shadow:
    0 28px 90px rgba(2, 6, 23, 0.52),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.solution-page-card .solution-media {
  margin: 0;
}

.solution-page-card .solution-copy {
  padding: 0.25rem;
}

.solution-media {
  position: relative;
  min-height: 30rem;
  overflow: visible;
  border: 0;
  border-radius: 1rem;
  background: transparent;
  box-shadow: none;
}

.solution-copy {
  display: grid;
  align-content: start;
  gap: 0.8rem;
}

.solution-eyebrow {
  margin: 0 0 -0.25rem;
  color: #f1d8df;
  font-family: "Cormorant Garamond", Georgia, serif;
  font-size: 1.18rem;
  font-weight: 500;
  line-height: 1;
}

.solution-copy h1 {
  background: var(--title-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-size: clamp(1.8rem, 4.2vw, 2.7rem);
  line-height: 1.18;
  display: inline-block;
}

.solution-summary {
  margin: 0;
  max-width: 34rem;
  color: rgba(235, 229, 243, 0.8);
  font-size: 0.95rem;
  font-weight: 400;
  line-height: 1.5;
}

.solution-steps {
  display: grid;
  gap: 0.85rem;
  margin-top: 0.35rem;
}

.solution-step {
  display: flex;
  gap: 0.85rem;
  align-items: flex-start;
  border-left: 1px solid rgba(240, 164, 202, 0.34);
  background: linear-gradient(90deg, rgba(240, 164, 202, 0.08), transparent 72%);
  padding: 0.65rem 0.85rem 0.65rem 1rem;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: 1.65rem;
  height: 1.65rem;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(240, 90, 168, 0.28), rgba(167, 139, 250, 0.22));
  color: #f6b6d2;
  font-size: 0.72rem;
  font-weight: 700;
  margin-top: 0.1rem;
}

.solution-step h3 {
  margin: 0 0 0.32rem;
  color: #f6b6d2;
  font-size: 0.94rem;
  line-height: 1.28;
}

.solution-step p {
  margin: 0;
  color: rgba(241, 245, 249, 0.74);
  font-size: 0.82rem;
  line-height: 1.62;
}

.solution-actions {
  display: flex;
  flex-wrap: nowrap;
  gap: 0.75rem;
  align-items: center;
  margin-top: 0.5rem;
}

.tool-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  min-height: 2.6rem;
  width: fit-content;
  border: 1px solid rgba(167, 139, 250, 0.4);
  border-radius: 999px;
  background: rgba(139, 92, 246, 0.13);
  color: #ede9fe;
  padding: 0 1rem;
  font-size: 0.86rem;
  font-weight: 600;
  transition: all 180ms ease;
}

.tool-cta:hover {
  border-color: rgba(167, 139, 250, 0.7);
  background: rgba(139, 92, 246, 0.22);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 0 22px rgba(139, 92, 246, 0.2);
}

.tool-cta-icon {
  font-size: 0.72rem;
}

.mistake-cta {
  border-color: rgba(240, 164, 202, 0.38);
  background: rgba(240, 164, 202, 0.1);
  color: #f8eef5;
}

.mistake-popup {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  padding: 1.25rem;
  background: rgba(3, 7, 18, 0.62);
  opacity: 0;
  pointer-events: none;
  transition: opacity 180ms ease;
}

.mistake-popup.visible {
  opacity: 1;
  pointer-events: auto;
}

.mistake-card {
  position: relative;
  width: min(38rem, 100%);
  max-height: min(42rem, calc(100vh - 2.5rem));
  overflow: auto;
  border: 1px solid rgba(240, 164, 202, 0.24);
  border-radius: 1.1rem;
  background:
    linear-gradient(145deg, rgba(16, 15, 40, 0.97), rgba(31, 18, 48, 0.96));
  padding: 1.35rem;
  box-shadow:
    0 34px 110px rgba(0, 0, 0, 0.5),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.mistake-card h2 {
  margin: 0;
  color: #f8eef5;
  font-family: "Cormorant Garamond", Georgia, serif;
  font-size: clamp(1.45rem, 4vw, 2rem);
  font-weight: 500;
  line-height: 1.05;
}

.mistake-list {
  display: grid;
  gap: 0.85rem;
  margin-top: 1rem;
}

.mistake-item {
  border: 1px solid rgba(216, 180, 254, 0.2);
  border-radius: 0.9rem;
  background:
    linear-gradient(145deg, rgba(38, 26, 66, 0.78), rgba(23, 24, 55, 0.78));
  padding: 1rem;
  box-shadow:
    0 0 24px rgba(216, 180, 254, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.mistake-item h3 {
  margin: 0;
  color: #f6b6d2;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: clamp(0.9rem, 2.1vw, 1.02rem);
  font-weight: 700;
  line-height: 1.25;
}

.mistake-item p {
  margin: 0.75rem 0 0;
  color: rgba(241, 245, 249, 0.78);
  font-size: 0.94rem;
  line-height: 1.6;
}

.mistake-close {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  display: grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  color: #f8eef5;
  font-size: 1.25rem;
}

@media (max-width: 480px) {
  .hide-mobile {
    display: none;
  }

  h2 {
    font-size: 1.35rem;
  }

  .solution-actions {
    gap: 0.5rem;
  }

  .solution-actions .back-link {
    font-size: 0.75rem;
    padding: 0.35rem 0.7rem;
    min-height: 2.2rem;
    gap: 0.35rem;
  }

  .solution-page-card {
    gap: 1.5rem;
    min-height: auto;
  }

  .solution-media {
    min-height: auto;
  }
}

@media (min-width: 640px) {
  .shell {
    gap: 2rem;
    padding-right: 1.5rem;
    padding-left: 1.5rem;
  }

  .grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .shell {
    gap: 2.25rem;
    padding: 2.25rem 2.25rem 2.5rem;
  }

  .hero {
    flex-direction: row;
    align-items: flex-start;
    justify-content: space-between;
  }

  .hero-actions {
    width: min(46rem, 52vw);
    margin-top: 0.35rem;
  }

  .search-wrap {
    width: 100%;
  }

  .puzzle-description {
    padding: 2rem 2.5rem 2.5rem;
  }

  .solution-page-card {
    grid-template-columns: minmax(0, 1.3fr) minmax(25rem, 0.7fr);
    align-items: start;
    padding: 1.25rem;
  }

  .solution-page-card .solution-copy {
    padding: 1rem 1rem 1rem 0.25rem;
  }
}

@media (min-width: 1280px) {
  .grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}