/* Self-hosted fonts (no Google Fonts connection, DSGVO-friendly).
   Cinzel is a variable font covering weights 400-900 in one file. */

@font-face {
  font-family: "Cinzel";
  font-style: normal;
  font-weight: 400 900;
  font-display: swap;
  src: url("fonts/cinzel.woff2") format("woff2");
}

@font-face {
  font-family: "Spectral";
  font-style: normal;
  font-weight: 300;
  font-display: swap;
  src: url("fonts/spectral-300.woff2") format("woff2");
}

@font-face {
  font-family: "Spectral";
  font-style: italic;
  font-weight: 300;
  font-display: swap;
  src: url("fonts/spectral-300-italic.woff2") format("woff2");
}

@font-face {
  font-family: "Spectral";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("fonts/spectral-400.woff2") format("woff2");
}

@font-face {
  font-family: "Spectral";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("fonts/spectral-500.woff2") format("woff2");
}

/* Mathemagie design system — "arcane observatory"
   Palette from the magicmath "mage-wars-arena" art direction:
   deep arcane azure, regal violet shadows, warm gold accents on night blue.
   Type: Cinzel (engraved display caps) + Spectral (bookish body serif). */

:root {
  --bg: #080a16;
  --bg-raised: #0e1124;
  --card: rgba(19, 23, 48, 0.55);
  --ink: #0f0c1d;

  --hairline: rgba(232, 176, 75, 0.16);
  --hairline-strong: rgba(232, 176, 75, 0.4);
  --border: rgba(255, 255, 255, 0.07);

  --azure: #4f7cff;
  --violet: #8b5cf6;
  --violet-soft: #b5a0f5;
  --gold: #e8b04b;
  --gold-soft: #f3cd8a;
  --gold-deep: #b97f2a;

  --text: #ece9f4;
  --text-muted: #a7a5c0;
  --text-faint: #6e6c8c;

  --font-display: "Cinzel", "Times New Roman", serif;
  --font-body: "Spectral", Georgia, serif;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-weight: 300;
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
  background-image:
    radial-gradient(ellipse 75% 55% at 18% -8%, rgba(79, 124, 255, 0.13) 0%, transparent 60%),
    radial-gradient(ellipse 65% 50% at 88% 2%, rgba(139, 92, 246, 0.12) 0%, transparent 60%),
    radial-gradient(ellipse 55% 45% at 50% 115%, rgba(232, 176, 75, 0.07) 0%, transparent 60%);
  background-attachment: fixed;
}

/* Film grain over everything, very faint */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 50;
  pointer-events: none;
  opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)' opacity='0.6'/%3E%3C/svg%3E");
}

.wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

a {
  color: var(--violet-soft);
  text-decoration: none;
  transition: color 0.25s var(--ease);
}

a:hover {
  color: var(--gold-soft);
}

::selection {
  background: rgba(139, 92, 246, 0.4);
  color: #fff;
}

/* ---------- Topbar ---------- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(8, 10, 22, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--hairline);
}

.topbar .inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0.95rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--text);
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.logo img {
  width: 32px;
  height: 32px;
}

.logo:hover {
  color: var(--gold-soft);
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.nav a {
  color: var(--text-muted);
}

.nav a:hover {
  color: var(--gold-soft);
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  padding: 7.5rem 0 6.5rem;
  overflow: hidden;
}

/* sparse static stars */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(circle 1.4px at 12% 22%, rgba(255, 255, 255, 0.7) 0%, transparent 100%),
    radial-gradient(circle 1px at 28% 68%, rgba(255, 255, 255, 0.45) 0%, transparent 100%),
    radial-gradient(circle 1.8px at 44% 12%, rgba(243, 205, 138, 0.7) 0%, transparent 100%),
    radial-gradient(circle 1px at 61% 80%, rgba(255, 255, 255, 0.4) 0%, transparent 100%),
    radial-gradient(circle 1.3px at 76% 30%, rgba(181, 160, 245, 0.7) 0%, transparent 100%),
    radial-gradient(circle 1px at 88% 64%, rgba(255, 255, 255, 0.5) 0%, transparent 100%),
    radial-gradient(circle 1.6px at 7% 84%, rgba(181, 160, 245, 0.55) 0%, transparent 100%),
    radial-gradient(circle 1px at 94% 10%, rgba(243, 205, 138, 0.6) 0%, transparent 100%);
}

.hero .wrap {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  align-items: center;
  gap: 2rem;
}

.hero-copy {
  position: relative;
  z-index: 2;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-family: var(--font-display);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.38em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 2rem;
}

.eyebrow::before {
  content: "";
  width: 3.5rem;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold));
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.7rem, 6vw, 4.6rem);
  font-weight: 500;
  line-height: 1.08;
  letter-spacing: 0.015em;
  margin-bottom: 1.5rem;
}

.hero h1 .gradient {
  background: linear-gradient(100deg, var(--gold-soft) 0%, var(--gold) 40%, var(--violet-soft) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.hero .sub {
  max-width: 33rem;
  color: var(--text-muted);
  font-size: 1.18rem;
  font-weight: 300;
  margin-bottom: 2.75rem;
}

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

.actions {
  display: flex;
  gap: 1.1rem;
  flex-wrap: wrap;
}

/* ---------- Magic circle ---------- */

.circle-wrap {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: center;
}

.magic-circle {
  width: min(560px, 95%);
  aspect-ratio: 1;
  filter: drop-shadow(0 0 60px rgba(139, 92, 246, 0.25));
}

.ring,
.core-pulse {
  transform-origin: 300px 300px;
}

.ring-outer {
  animation: spin 160s linear infinite;
}

.ring-mid {
  animation: spin 110s linear infinite reverse;
}

.ring-glyphs {
  font-family: Georgia, serif;
  font-size: 26px;
  letter-spacing: 14px;
  fill: rgba(243, 205, 138, 0.78);
}

.ring-digits {
  font-family: Georgia, serif;
  font-size: 15px;
  letter-spacing: 17px;
  fill: rgba(181, 160, 245, 0.6);
}

.core-glyph {
  font-family: Georgia, serif;
  font-size: 86px;
  font-style: italic;
  fill: url(#coreGrad);
}

.core-pulse {
  animation: pulse 7s ease-in-out infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes pulse {
  0%,
  100% {
    opacity: 0.5;
    transform: scale(1);
  }
  50% {
    opacity: 0.9;
    transform: scale(1.05);
  }
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-block;
  padding: 0.85rem 2rem;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  transition: all 0.3s var(--ease);
}

.btn-primary {
  color: var(--ink);
  background: linear-gradient(160deg, var(--gold-soft) 0%, var(--gold) 45%, var(--gold-deep) 100%);
  border: 1px solid rgba(243, 205, 138, 0.5);
  box-shadow: 0 4px 28px rgba(232, 176, 75, 0.25), inset 0 1px 0 rgba(255, 255, 255, 0.35);
}

.btn-primary:hover {
  color: var(--ink);
  transform: translateY(-2px);
  box-shadow: 0 8px 36px rgba(232, 176, 75, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.35);
}

.btn-ghost {
  color: var(--text);
  border: 1px solid rgba(139, 92, 246, 0.45);
  background: rgba(139, 92, 246, 0.06);
}

.btn-ghost:hover {
  color: var(--gold-soft);
  border-color: var(--hairline-strong);
  background: rgba(232, 176, 75, 0.06);
}

/* ---------- Rune divider ---------- */

.rune-divider {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
  color: var(--gold);
  font-size: 1rem;
}

.rune-divider::before,
.rune-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--hairline-strong), transparent);
}

/* ---------- Sections ---------- */

section.block {
  padding: 5.5rem 0;
}

.section-head {
  max-width: 620px;
  margin: 0 0 3.5rem;
}

.section-head .num {
  font-family: var(--font-display);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.38em;
  text-transform: uppercase;
  color: var(--gold);
  display: block;
  margin-bottom: 0.9rem;
}

.section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 3.5vw, 2.6rem);
  font-weight: 500;
  margin-bottom: 0.9rem;
}

.section-head p {
  color: var(--text-muted);
  font-size: 1.08rem;
}

/* ---------- Spell cards ---------- */

.games {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(330px, 1fr));
  gap: 2.25rem;
}

.game-card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--hairline);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.5);
  display: flex;
  flex-direction: column;
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

/* inner frame line, like an engraved card border */
.game-card::before {
  content: "";
  position: absolute;
  inset: 7px;
  border: 1px solid rgba(232, 176, 75, 0.12);
  pointer-events: none;
  z-index: 2;
  transition: border-color 0.35s var(--ease);
}

/* gold corner ticks */
.game-card::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 2;
  background-image:
    linear-gradient(var(--gold) 0 0), linear-gradient(var(--gold) 0 0),
    linear-gradient(var(--gold) 0 0), linear-gradient(var(--gold) 0 0),
    linear-gradient(var(--gold) 0 0), linear-gradient(var(--gold) 0 0),
    linear-gradient(var(--gold) 0 0), linear-gradient(var(--gold) 0 0);
  background-repeat: no-repeat;
  background-size: 14px 1px, 1px 14px, 14px 1px, 1px 14px, 14px 1px, 1px 14px, 14px 1px, 1px 14px;
  background-position:
    top left, top left,
    top right, top right,
    bottom left, bottom left,
    bottom right, bottom right;
  opacity: 0.7;
}

.game-card:hover {
  transform: translateY(-5px);
  border-color: var(--hairline-strong);
  box-shadow: 0 26px 70px rgba(0, 0, 0, 0.6), 0 0 50px rgba(139, 92, 246, 0.12);
}

.game-card:hover::before {
  border-color: rgba(232, 176, 75, 0.3);
}

.game-art {
  height: 230px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--hairline);
}

.game-art .glyph {
  font-family: Georgia, serif;
  font-size: 5.2rem;
  color: rgba(255, 255, 255, 0.92);
  text-shadow: 0 0 40px rgba(243, 205, 138, 0.6), 0 4px 30px rgba(0, 0, 0, 0.45);
  position: relative;
  z-index: 1;
  transition: transform 0.45s var(--ease);
}

.game-card:hover .game-art .glyph {
  transform: scale(1.08);
}

.art-magicmath {
  background:
    radial-gradient(ellipse 80% 90% at 30% 20%, rgba(79, 124, 255, 0.5) 0%, transparent 60%),
    radial-gradient(ellipse 70% 80% at 80% 90%, rgba(232, 176, 75, 0.38) 0%, transparent 55%),
    linear-gradient(150deg, #271d56 0%, #45287f 55%, #170f38 100%);
}

.art-mathinvaders {
  background:
    radial-gradient(ellipse 80% 90% at 70% 15%, rgba(139, 92, 246, 0.45) 0%, transparent 60%),
    radial-gradient(ellipse 70% 70% at 20% 95%, rgba(79, 200, 255, 0.32) 0%, transparent 55%),
    linear-gradient(160deg, #0c1c46 0%, #1d2c6e 55%, #090f2b 100%);
}

.game-art .stars {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle 2px at 20% 30%, rgba(255, 255, 255, 0.55) 0%, transparent 100%),
    radial-gradient(circle 1.5px at 70% 20%, rgba(255, 255, 255, 0.45) 0%, transparent 100%),
    radial-gradient(circle 1px at 85% 60%, rgba(255, 255, 255, 0.5) 0%, transparent 100%),
    radial-gradient(circle 2px at 40% 75%, rgba(255, 255, 255, 0.35) 0%, transparent 100%),
    radial-gradient(circle 1px at 60% 50%, rgba(255, 255, 255, 0.4) 0%, transparent 100%);
}

.game-body {
  padding: 1.9rem 1.9rem 2.1rem;
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 1rem;
}

.game-body .title-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
}

.game-body h3 {
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.badge {
  font-family: var(--font-display);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  padding: 0.35rem 0.8rem;
  white-space: nowrap;
}

.badge-wip {
  color: var(--gold-soft);
  background: rgba(232, 176, 75, 0.08);
  border: 1px solid rgba(232, 176, 75, 0.35);
}

.badge-live {
  color: #8fe9ae;
  background: rgba(36, 180, 100, 0.1);
  border: 1px solid rgba(36, 180, 100, 0.4);
}

.game-body p {
  color: var(--text-muted);
  font-size: 1rem;
  flex: 1;
}

.game-meta {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.tag {
  font-family: var(--font-display);
  font-size: 0.62rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-faint);
  border: 1px solid var(--border);
  padding: 0.3rem 0.7rem;
}

/* ---------- Matheeule cross-link ---------- */

.crosslink {
  position: relative;
  background: var(--card);
  border: 1px solid var(--hairline);
  padding: 2.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.5);
}

.crosslink::before {
  content: "";
  position: absolute;
  inset: 7px;
  border: 1px solid rgba(232, 176, 75, 0.1);
  pointer-events: none;
}

.crosslink h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 500;
  margin-bottom: 0.6rem;
}

.crosslink p {
  color: var(--text-muted);
  max-width: 36rem;
}

/* ---------- Content pages (Impressum, Datenschutz) ---------- */

.page {
  padding: 4.5rem 0 5rem;
  max-width: 760px;
  margin: 0 auto;
}

.page h1 {
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 500;
  margin-bottom: 0.6rem;
}

.page .lede {
  color: var(--text-muted);
  margin-bottom: 2.75rem;
  font-size: 1.05rem;
}

.page h2 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  margin: 2.25rem 0 0.65rem;
  color: var(--gold-soft);
}

.page p {
  color: var(--text-muted);
  margin-bottom: 0.85rem;
}

.page p strong {
  color: var(--text);
}

/* ---------- Footer ---------- */

.foot {
  border-top: 1px solid var(--hairline);
  margin-top: 4.5rem;
  padding: 2.25rem 0;
  font-size: 0.92rem;
  color: var(--text-faint);
}

.foot .inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.foot a {
  color: var(--text-muted);
}

.foot a:hover {
  color: var(--gold-soft);
}

.foot-links {
  display: flex;
  gap: 1.75rem;
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

/* ---------- Entrance reveals ---------- */

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(22px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero .eyebrow,
.hero h1,
.hero .sub,
.hero .actions {
  animation: rise 0.9s var(--ease) both;
}

.hero h1 {
  animation-delay: 0.12s;
}

.hero .sub {
  animation-delay: 0.24s;
}

.hero .actions {
  animation-delay: 0.36s;
}

.circle-wrap {
  animation: rise 1.2s var(--ease) 0.3s both;
}

/* ---------- Responsive & motion ---------- */

@media (max-width: 860px) {
  .hero {
    padding: 4.5rem 0 4rem;
  }

  .hero .wrap {
    grid-template-columns: 1fr;
  }

  .circle-wrap {
    order: -1;
    margin-bottom: -2rem;
    opacity: 0.85;
  }

  .magic-circle {
    width: min(380px, 80%);
  }

  .nav {
    gap: 1rem;
    font-size: 0.68rem;
  }

  .crosslink {
    padding: 2rem 1.75rem;
  }
}

@media (max-width: 480px) {
  .topbar .inner {
    padding: 0.8rem 1rem;
    gap: 0.6rem;
  }

  .logo {
    font-size: 0.85rem;
    letter-spacing: 0.14em;
    gap: 0.45rem;
  }

  .logo img {
    width: 26px;
    height: 26px;
  }

  .nav {
    gap: 0.75rem;
    font-size: 0.62rem;
    letter-spacing: 0.12em;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .ring-outer,
  .ring-mid,
  .core-pulse,
  .hero .eyebrow,
  .hero h1,
  .hero .sub,
  .hero .actions,
  .circle-wrap {
    animation: none;
  }
}