/* ==========================================================================
   Shuffle21 — Global Styles
   Developed by Project Research LLC
   Design tokens, layout primitives, navigation, footer, buttons, modals.
   ========================================================================== */

:root {
  /* Palette: deep green / charcoal / navy card-room aesthetic */
  --color-navy: #0b1420;
  --color-charcoal: #1b1f24;
  --color-felt: #0f3d2e;
  --color-felt-dark: #0a2b20;
  --color-surface: #16212a;
  --color-surface-raised: #1e2c37;
  --color-off-white: #f5f2ea;
  --color-cream: #eae5d8;
  --color-gold: #c9a227;
  --color-gold-bright: #e0bc4a;
  --color-red-suit: #b3312c;
  --color-black-suit: #1a1a1a;
  --color-text: #eef1f0;
  --color-text-muted: #a9b4bd;
  --color-border: rgba(245, 242, 234, 0.12);
  --color-success: #3f9d63;
  --color-danger: #c0392b;
  --shadow-soft: 0 4px 14px rgba(0, 0, 0, 0.35);
  --shadow-card: 0 2px 6px rgba(0, 0, 0, 0.45);
  --radius-md: 10px;
  --radius-lg: 16px;
  --font-body: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --header-height: 64px;
  --transition-fast: 150ms ease;
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  min-height: 100vh;
  background: linear-gradient(180deg, var(--color-navy) 0%, var(--color-charcoal) 100%);
  color: var(--color-text);
  font-family: var(--font-body);
  line-height: 1.5;
  overflow-x: hidden;
}

img {
  max-width: 100%;
}

a {
  color: var(--color-gold-bright);
}

a:focus-visible,
button:focus-visible,
select:focus-visible,
input:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--color-gold-bright);
  outline-offset: 2px;
}

.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;
}

.skip-link {
  position: absolute;
  left: 8px;
  top: -48px;
  background: var(--color-gold-bright);
  color: var(--color-navy);
  padding: 10px 16px;
  border-radius: var(--radius-md);
  font-weight: 700;
  z-index: 1000;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 8px;
}

/* ------------------------------ Beta banner ----------------------------- */

.sticky-top {
  position: sticky;
  top: 0;
  z-index: 500;
}

.beta-banner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  background: linear-gradient(90deg, #3d2f0a, #4a3a10);
  color: var(--color-off-white);
  text-align: center;
  font-size: 0.78rem;
  padding: 7px 12px;
  border-bottom: 1px solid rgba(201, 162, 39, 0.4);
}

.beta-banner a {
  color: var(--color-gold-bright);
}

.beta-badge {
  background: var(--color-gold-bright);
  color: var(--color-navy);
  font-weight: 800;
  padding: 2px 9px;
  border-radius: 999px;
  font-size: 0.68rem;
  letter-spacing: 0.5px;
  flex-shrink: 0;
}

/* ---------------------------- Header / Nav ---------------------------- */

.site-header {
  background: rgba(11, 20, 32, 0.96);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--color-border);
}

.nav-bar {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  height: var(--header-height);
  gap: 16px;
}

.brand {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
  text-decoration: none;
  flex-shrink: 0;
}

.brand-name {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-off-white);
  letter-spacing: 0.5px;
}

.brand-name .accent {
  color: var(--color-gold-bright);
}

.brand-sub {
  font-size: 0.65rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.nav-links {
  display: flex;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
}

.nav-links a {
  display: inline-block;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  color: var(--color-text);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.nav-links a:hover,
.nav-links a:focus-visible {
  background: rgba(201, 162, 39, 0.15);
  color: var(--color-gold-bright);
}

.nav-links a[aria-current="page"] {
  background: rgba(201, 162, 39, 0.22);
  color: var(--color-gold-bright);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.balance-pill {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  background: var(--color-surface-raised);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 6px 12px;
  line-height: 1.2;
}

.balance-pill .label {
  font-size: 0.6rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.balance-pill .amount {
  font-weight: 800;
  color: var(--color-gold-bright);
  font-size: 0.95rem;
}

.icon-btn {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text);
  border-radius: var(--radius-md);
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.1rem;
  transition: background var(--transition-fast);
}

.icon-btn:hover {
  background: var(--color-surface-raised);
}

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-off-white);
  border-radius: 2px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
  min-height: 44px;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn[hidden] {
  display: none;
}

.btn-primary {
  background: linear-gradient(180deg, var(--color-gold-bright), var(--color-gold));
  color: var(--color-navy);
  box-shadow: var(--shadow-soft);
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--color-surface-raised);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--color-surface);
}

.btn-danger {
  background: var(--color-danger);
  color: #fff;
}

.btn-small {
  padding: 8px 14px;
  font-size: 0.8rem;
  min-height: 36px;
}

.btn-block {
  width: 100%;
}

/* ------------------------------ Page banner ------------------------------ */

.page-banner {
  width: 100%;
  aspect-ratio: 1400 / 788;
  max-height: 640px;
  overflow: hidden;
  line-height: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-navy);
}

.page-banner img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

/* -------------------------------- Layout -------------------------------- */

.page-main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 16px 64px;
}

.narrow {
  max-width: 820px;
}

.hero {
  text-align: center;
  padding: 56px 16px 32px;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  margin: 0 0 12px;
  color: var(--color-off-white);
}

.hero p.subhead {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--color-text-muted);
  margin: 0;
}

.filter-bar {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
  margin: 24px 0;
}

.filter-bar button[aria-pressed="true"] {
  background: var(--color-gold-bright);
  color: var(--color-navy);
  border-color: var(--color-gold-bright);
}

.empty-state {
  text-align: center;
  color: var(--color-text-muted);
  padding: 32px 16px;
  grid-column: 1 / -1;
}

.category-heading {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 48px 0 4px;
}

.category-heading:first-of-type {
  margin-top: 24px;
}

.category-heading h2 {
  margin: 0;
  font-size: clamp(1.3rem, 3vw, 1.7rem);
  color: var(--color-gold-bright);
}

.category-heading .category-link {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.category-heading .category-link:hover,
.category-heading .category-link:focus-visible {
  color: var(--color-gold-bright);
  border-bottom-color: var(--color-gold-bright);
}

.notice-banner {
  max-width: 720px;
  margin: 0 auto 32px;
  text-align: center;
  background: rgba(201, 162, 39, 0.1);
  border: 1px solid rgba(201, 162, 39, 0.3);
  border-radius: var(--radius-md);
  padding: 12px 18px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* ------------------------------ Game Grid ------------------------------- */

.game-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  margin-top: 32px;
}

.game-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  box-shadow: var(--shadow-soft);
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.game-card[hidden] {
  display: none;
}

.game-card:hover {
  transform: translateY(-4px);
  border-color: rgba(201, 162, 39, 0.4);
}

.game-card-art {
  height: 130px;
  border-radius: var(--radius-md);
  background: radial-gradient(circle at 30% 20%, var(--color-felt) 0%, var(--color-felt-dark) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.4rem;
  color: var(--color-off-white);
  border: 1px solid var(--color-border);
  overflow: hidden;
  padding: 0;
}

.game-card-art img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}

.game-card h2,
.game-card h3 {
  margin: 0;
  font-size: 1.3rem;
  color: var(--color-off-white);
}

.game-card p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.92rem;
  flex-grow: 1;
}

.game-meta {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  font-size: 0.72rem;
}

.tag {
  background: var(--color-surface-raised);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  padding: 4px 10px;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* --------------------------- AI disclosure banner ------------------------- */

.ai-disclosure {
  max-width: 900px;
  margin: 56px auto 0;
  padding: 16px 20px 0;
  text-align: center;
  border-top: 1px solid var(--color-border);
}

.ai-disclosure p {
  margin: 16px 0 0;
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--color-text-muted);
}

.ai-disclosure a {
  color: var(--color-text-muted);
  text-decoration: underline;
}

.ai-disclosure a:hover,
.ai-disclosure a:focus-visible {
  color: var(--color-gold-bright);
}

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

.site-footer {
  border-top: 1px solid var(--color-border);
  background: var(--color-navy);
  padding: 32px 16px;
  margin-top: 48px;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 24px;
}

.footer-brand p {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  max-width: 340px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links a {
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.85rem;
}

.footer-links a:hover {
  color: var(--color-gold-bright);
  text-decoration: underline;
}

.footer-bottom {
  max-width: 1200px;
  margin: 24px auto 0;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
  font-size: 0.78rem;
  color: var(--color-text-muted);
  text-align: center;
}

/* -------------------------------- Modals -------------------------------- */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(5, 10, 16, 0.75);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  z-index: 1000;
}

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

.modal {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  max-width: 560px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  padding: 24px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.modal-header h2 {
  margin: 0;
  font-size: 1.3rem;
}

.modal-close {
  background: transparent;
  border: none;
  color: var(--color-text);
  font-size: 1.4rem;
  cursor: pointer;
  line-height: 1;
  padding: 6px 10px;
  border-radius: var(--radius-md);
}

.modal-close:hover {
  background: var(--color-surface-raised);
}

.modal-body h3 {
  color: var(--color-gold-bright);
  font-size: 1rem;
  margin-bottom: 4px;
}

.modal-body ul {
  padding-left: 20px;
}

.settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border);
}

.settings-row:last-child {
  border-bottom: none;
}

.settings-row label {
  font-weight: 600;
}

.settings-row .hint {
  display: block;
  font-weight: 400;
  color: var(--color-text-muted);
  font-size: 0.78rem;
}

.switch {
  position: relative;
  width: 46px;
  height: 26px;
  flex-shrink: 0;
}

.switch input {
  opacity: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  cursor: pointer;
}

.switch .track {
  position: absolute;
  inset: 0;
  background: var(--color-surface-raised);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  pointer-events: none;
  transition: background var(--transition-fast);
}

.switch .track::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 20px;
  height: 20px;
  background: var(--color-text-muted);
  border-radius: 50%;
  transition: transform var(--transition-fast), background var(--transition-fast);
}

.switch input:checked + .track {
  background: rgba(201, 162, 39, 0.35);
}

.switch input:checked + .track::after {
  transform: translateX(20px);
  background: var(--color-gold-bright);
}

select.select-input {
  background: var(--color-surface-raised);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 8px 12px;
  font-size: 0.9rem;
}

/* ------------------------------ Legal pages ------------------------------ */

.legal-content h2 {
  color: var(--color-gold-bright);
  margin-top: 32px;
}

.legal-content h1 {
  margin-bottom: 4px;
}

.last-updated {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  margin-bottom: 24px;
}

.legal-content p,
.legal-content li {
  color: var(--color-text);
}

.contact-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  text-align: center;
  max-width: 480px;
  margin: 0 auto;
}

.contact-card h1 {
  margin-top: 0;
}

.contact-card .email {
  font-size: 1.1rem;
  color: var(--color-gold-bright);
  word-break: break-all;
}

.form-disabled-note {
  background: rgba(201, 162, 39, 0.1);
  border: 1px dashed rgba(201, 162, 39, 0.4);
  border-radius: var(--radius-md);
  padding: 14px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: 24px;
  text-align: left;
}

.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--color-surface-raised);
  border: 1px solid var(--color-gold);
  color: var(--color-text);
  padding: 12px 20px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
  opacity: 0;
  pointer-events: none;
  transition: opacity 200ms ease, transform 200ms ease;
  z-index: 1500;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}