/* Center LARP adaptive tokens and starter layout
   Extends the base design tokens with semantic themes and responsive rules. */

:root {
  color-scheme: light;

  /* Physical palette */
  --clr-paper-0: #f5efe5;
  --clr-paper-1: #ede2d3;
  --clr-paper-2: #d8ccb9;
  --clr-paper-3: #fbf7f0;

  --clr-ink-0: #332c26;
  --clr-ink-1: #5c5349;
  --clr-ink-2: #81776a;

  --clr-sea-0: #71868d;
  --clr-sea-1: #8fa1a7;
  --clr-sea-2: #a9babf;

  --clr-night-0: #12171b;
  --clr-night-1: #1a2026;
  --clr-night-2: #232b31;
  --clr-night-3: #2b343b;

  --clr-rust-0: #9b6f5a;
  --clr-rust-1: #b3836e;
  --clr-success-0: #556b5b;
  --clr-success-1: #7b9683;
  --clr-warning-0: #8a6b46;
  --clr-warning-1: #b08b5b;
  --clr-error-0: #8c5c56;
  --clr-error-1: #b87c74;

  --noise-opacity-day: 0.055;
  --noise-opacity-night: 0.035;

  --font-sans: "Assistant", "Alef", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-display: "Assistant", "Alef", system-ui, sans-serif;

  --fs-display-2xl: clamp(3.5rem, 10vw, 6.5rem);
  --fs-display-xl: clamp(2.8rem, 7vw, 4.6rem);
  --fs-display-lg: clamp(2rem, 5vw, 3.1rem);
  --fs-h1: clamp(1.8rem, 3.5vw, 2.5rem);
  --fs-h2: 1.4rem;
  --fs-body-lg: 1.15rem;
  --fs-body: 1.05rem;
  --fs-body-sm: 0.95rem;
  --fs-meta: 0.85rem;
  --fs-micro: 0.78rem;

  --space-2xs: 0.25rem;
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4.5rem;
  --space-4xl: 6rem;

  --container-wide: 1180px;
  --container-main: 920px;
  --container-read: 840px;
  --container-narrow: 560px;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;

  --dur-fast: 160ms;
  --dur-base: 240ms;
  --dur-slow: 480ms;
  --ease-standard: cubic-bezier(.2,.8,.2,1);

  --tap-target-min: 44px;
}

:root,
:root[data-theme="day"] {
  color-scheme: light;

  --surface-page: var(--clr-paper-0);
  --surface-page-alt: color-mix(in srgb, var(--clr-paper-0) 82%, white);
  --surface-card: var(--clr-paper-1);
  --surface-card-soft: var(--clr-paper-3);
  --surface-contrast: var(--clr-night-0);
  --surface-overlay: rgba(245, 239, 229, 0.76);

  --text-primary: var(--clr-ink-0);
  --text-secondary: var(--clr-ink-1);
  --text-muted: var(--clr-ink-2);
  --text-on-contrast: var(--clr-paper-0);

  --border-soft: rgba(51, 44, 38, 0.16);
  --border-strong: rgba(51, 44, 38, 0.28);
  --accent-primary: var(--clr-sea-0);
  --accent-secondary: var(--clr-sea-1);
  --accent-rust: var(--clr-rust-0);
  --focus-ring: rgba(113, 134, 141, 0.28);
  --shadow-paper: 0 12px 40px rgba(51, 44, 38, 0.08);
  --shadow-panel: 0 18px 50px rgba(23, 27, 31, 0.12);

  --status-success: var(--clr-success-0);
  --status-warning: var(--clr-warning-0);
  --status-error: var(--clr-error-0);

  --ornament-opacity: 0.26;
  --texture-opacity: var(--noise-opacity-day);
}

:root[data-theme="night"] {
  color-scheme: dark;

  --surface-page: var(--clr-night-0);
  --surface-page-alt: var(--clr-night-1);
  --surface-card: var(--clr-night-2);
  --surface-card-soft: var(--clr-night-3);
  --surface-contrast: var(--clr-paper-0);
  --surface-overlay: rgba(18, 23, 27, 0.76);

  --text-primary: #eee4d7;
  --text-secondary: #d4c9bb;
  --text-muted: #ab9f92;
  --text-on-contrast: var(--clr-ink-0);

  --border-soft: rgba(238, 228, 215, 0.12);
  --border-strong: rgba(238, 228, 215, 0.24);
  --accent-primary: #96aab1;
  --accent-secondary: #7f949b;
  --accent-rust: var(--clr-rust-1);
  --focus-ring: rgba(150, 170, 177, 0.32);
  --shadow-paper: 0 12px 36px rgba(0, 0, 0, 0.25);
  --shadow-panel: 0 18px 54px rgba(0, 0, 0, 0.34);

  --status-success: var(--clr-success-1);
  --status-warning: var(--clr-warning-1);
  --status-error: var(--clr-error-1);

  --ornament-opacity: 0.18;
  --texture-opacity: var(--noise-opacity-night);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]),
  :root[data-theme="auto"] {
    color-scheme: dark;

    --surface-page: var(--clr-night-0);
    --surface-page-alt: var(--clr-night-1);
    --surface-card: var(--clr-night-2);
    --surface-card-soft: var(--clr-night-3);
    --surface-contrast: var(--clr-paper-0);
    --surface-overlay: rgba(18, 23, 27, 0.76);

    --text-primary: #eee4d7;
    --text-secondary: #d4c9bb;
    --text-muted: #ab9f92;
    --text-on-contrast: var(--clr-ink-0);

    --border-soft: rgba(238, 228, 215, 0.12);
    --border-strong: rgba(238, 228, 215, 0.24);
    --accent-primary: #96aab1;
    --accent-secondary: #7f949b;
    --accent-rust: var(--clr-rust-1);
    --focus-ring: rgba(150, 170, 177, 0.32);
    --shadow-paper: 0 12px 36px rgba(0, 0, 0, 0.25);
    --shadow-panel: 0 18px 54px rgba(0, 0, 0, 0.34);

    --status-success: var(--clr-success-1);
    --status-warning: var(--clr-warning-1);
    --status-error: var(--clr-error-1);

    --ornament-opacity: 0.18;
    --texture-opacity: var(--noise-opacity-night);
  }
}

@media (prefers-color-scheme: light) {
  :root[data-theme="auto"] {
    color-scheme: light;
  }
}

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

html {
  direction: rtl;
  scroll-behavior: smooth;
  overflow-x: clip;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  line-height: 1.8;
  background: var(--surface-page);
  color: var(--text-primary);
  position: relative;
  transition:
    background-color var(--dur-slow) var(--ease-standard),
    color var(--dur-base) var(--ease-standard);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: var(--texture-opacity);
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='1'/%3E%3C/svg%3E");
  z-index: 0;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at top, color-mix(in srgb, var(--accent-secondary) 12%, transparent), transparent 36%),
    linear-gradient(to bottom, transparent, color-mix(in srgb, var(--surface-page-alt) 14%, transparent));
  opacity: 0.42;
  z-index: 0;
}

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

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
}

.page-shell {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  padding-inline: clamp(0.75rem, 2vw, 1rem);
}

.container-wide,
.container-main,
.container-read,
.container-narrow {
  width: 100%;
  margin-inline: auto;
}

.container-wide { max-width: var(--container-wide); }
.container-main { max-width: var(--container-main); }
.container-read { max-width: var(--container-read); }
.container-narrow { max-width: var(--container-narrow); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(14px);
  background: var(--surface-overlay);
  border-bottom: 1px solid var(--border-soft);
}

.site-header__inner {
  max-width: var(--container-wide);
  margin-inline: auto;
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-wordmark {
  font-size: var(--fs-meta);
  letter-spacing: 0.18em;
  color: var(--accent-primary);
}

.theme-toggle {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem;
  border: 1px solid var(--border-strong);
  padding: 0.35rem;
  border-radius: 999px;
  background: color-mix(in srgb, var(--surface-card) 84%, transparent);
  box-shadow: var(--shadow-paper);
}

.theme-toggle__button {
  border: 0;
  min-height: var(--tap-target-min);
  min-width: var(--tap-target-min);
  padding: 0.45rem 0.8rem;
  border-radius: 999px;
  background: transparent;
  color: var(--text-secondary);
  font: inherit;
  cursor: pointer;
  transition: background-color var(--dur-base) var(--ease-standard), color var(--dur-base) var(--ease-standard);
}

.theme-toggle__button[aria-pressed="true"] {
  background: color-mix(in srgb, var(--accent-primary) 18%, var(--surface-card));
  color: var(--text-primary);
}

.theme-toggle__button:focus-visible,
.button:focus-visible,
.input:focus-visible,
.textarea:focus-visible,
.select:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--focus-ring);
}

.hero {
  padding-block: clamp(3rem, 10vw, 6rem) clamp(2rem, 7vw, 4rem);
  text-align: center;
}

.hero__stack {
  max-width: 52rem;
  margin-inline: auto;
}

.hero__ribbon {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  padding: 0.9rem 1.4rem;
  margin-bottom: var(--space-xl);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: color-mix(in srgb, var(--surface-card) 88%, transparent);
  color: var(--text-secondary);
  box-shadow: var(--shadow-paper);
}

.hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--fs-display-2xl);
  line-height: 0.96;
  letter-spacing: -0.03em;
}

.hero__subtitle {
  max-width: 38rem;
  margin: 1.25rem auto 0;
  font-size: var(--fs-body-lg);
  color: var(--text-secondary);
}

.hero__meta {
  margin-top: 1.5rem;
  font-size: clamp(1.1rem, 2vw, 1.5rem);
}

.hero__art {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-soft);
  color: color-mix(in srgb, var(--accent-primary) 48%, var(--text-secondary));
  opacity: 0.9;
}

.section {
  padding-block: clamp(2.25rem, 7vw, 4.5rem);
}

.section--alt {
  background: color-mix(in srgb, var(--surface-page-alt) 88%, transparent);
}

.section__label {
  display: inline-block;
  margin-bottom: 1rem;
  font-size: var(--fs-meta);
  letter-spacing: 0.2em;
  color: var(--accent-primary);
}

.rule {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  color: var(--accent-primary);
  font-size: var(--fs-body);
  font-weight: 700;
  letter-spacing: 0.2em;
  padding-block: var(--space-lg);
}

.rule::before,
.rule::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border-soft);
}

.meta-grid,
.cards,
.form-grid,
.roster-grid {
  display: grid;
  gap: 1rem;
}

.meta-grid {
  grid-template-columns: 1fr;
}

.card {
  background: color-mix(in srgb, var(--surface-card) 94%, transparent);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  padding: clamp(1rem, 2.5vw, 1.5rem);
  box-shadow: var(--shadow-paper);
}

.card__eyebrow {
  display: block;
  margin-bottom: 0.5rem;
  font-size: var(--fs-micro);
  letter-spacing: 0.2em;
  color: var(--accent-primary);
}

.card__title {
  margin: 0 0 0.5rem;
  font-size: var(--fs-h2);
  font-weight: 700;
}

.card__text,
.copy {
  color: var(--text-secondary);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--tap-target-min);
  padding: 0.9rem 1.35rem;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  text-decoration: none;
  font-weight: 700;
  transition:
    transform var(--dur-fast) var(--ease-standard),
    background-color var(--dur-base) var(--ease-standard),
    border-color var(--dur-base) var(--ease-standard),
    color var(--dur-base) var(--ease-standard);
}

.button:hover {
  transform: translateY(-1px);
}

.button--primary {
  background: color-mix(in srgb, var(--surface-contrast) 92%, transparent);
  border-color: color-mix(in srgb, var(--surface-contrast) 92%, transparent);
  color: var(--text-on-contrast);
}

.button--secondary {
  background: color-mix(in srgb, var(--surface-card) 92%, transparent);
  color: var(--text-primary);
}

.form-grid {
  grid-template-columns: 1fr;
}

.field {
  display: grid;
  gap: 0.4rem;
}

.field__label {
  font-weight: 700;
}

.field__hint,
.field__meta {
  color: var(--text-muted);
  font-size: var(--fs-body-sm);
}

.input,
.textarea,
.select {
  width: 100%;
  min-height: var(--tap-target-min);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
  background: color-mix(in srgb, var(--surface-card-soft) 94%, transparent);
  color: var(--text-primary);
  padding: 0.85rem 1rem;
  font: inherit;
}

.textarea {
  min-height: 10rem;
  resize: vertical;
}

.roster-grid {
  grid-template-columns: 1fr;
}

.roster-card__name {
  margin: 0;
  font-size: 1.15rem;
}

.roster-card__meta {
  color: var(--text-muted);
  font-size: var(--fs-body-sm);
}

.state-card {
  max-width: 40rem;
  margin-inline: auto;
  text-align: center;
}

.sticky-mobile-cta {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 20;
  padding: 0.75rem 1rem calc(0.75rem + env(safe-area-inset-bottom));
  background: color-mix(in srgb, var(--surface-overlay) 88%, transparent);
  border-top: 1px solid var(--border-soft);
  backdrop-filter: blur(12px);
}

.sticky-mobile-cta .button {
  width: 100%;
}

@media (min-width: 480px) {
  .meta-grid,
  .cards,
  .roster-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 767px) {
  .site-header__inner {
    padding-inline: 0.85rem;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
  }

  .theme-toggle {
    width: 100%;
    justify-content: center;
  }

  .hero__ribbon {
    margin-bottom: 1rem;
    max-width: 100%;
  }

  .hero__title {
    font-size: clamp(2.8rem, 12vw, 4.4rem);
  }

  .hero__subtitle {
    font-size: 0.98rem;
  }

  .hero__meta {
    font-size: 1.05rem;
  }

  .hero__art {
    margin-top: 1.4rem;
    opacity: 0.84;
  }

  .section {
    padding-block: 2.25rem;
  }

  .rule {
    gap: 0.6rem;
    letter-spacing: 0.18em;
  }
}

@media (min-width: 768px) {
  .site-header__inner {
    padding: 0.9rem 1.25rem;
  }

  .meta-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

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

  .form-grid .field--full {
    grid-column: 1 / -1;
  }

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

  .sticky-mobile-cta {
    display: none;
  }
}

@media (min-width: 1024px) {
  .cards--three {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .roster-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}