/* ==========================================================================
   theme.css — shared design tokens + common components for all site pages.
   Games keep their own styles; this file is for the platform shell.
   ========================================================================== */

:root {
  /* App identity (navy + gold) */
  --navy-950: #070d24;
  --navy-900: #0a1230;
  --navy-800: #141f4a;
  --navy-700: #1f2758;
  --navy-600: #2a3f7a;
  --gold: #ffe596;
  --gold-soft: rgba(255, 229, 150, 0.35);
  --gold-faint: rgba(255, 229, 150, 0.12);

  /* Warm public palette */
  --sky: #bfe3ff;
  --sky-deep: #5aa9e6;
  --cream: #fff8e8;
  --cream-deep: #f6ecd4;
  --leaf: #58b368;
  --leaf-deep: #2f7a44;
  --sun: #ffcf5c;
  --coral: #ff7a5c;

  /* Text */
  --ink: #e8eeff;
  --ink-muted: #b8c4e8;
  --ink-faint: #9aa8d0;
  --ink-dark: #23304d;
  --ink-dark-muted: #55627f;

  /* Skill progress statuses */
  --status-not-started: #6b7794;
  --status-introduced: #58a8e8;
  --status-practising: #f0b429;
  --status-demonstrated: #7dd87d;
  --status-mastered: #2f9e44;
  --status-needs-review: #f06a6a;

  /* Shape + type */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-pill: 999px;
  --shadow-card: 0 10px 28px rgba(0, 0, 0, 0.3);
  --shadow-card-hover: 0 14px 32px rgba(0, 0, 0, 0.38);
  --font-body: "Segoe UI", system-ui, sans-serif;

  --nav-height: 58px;
  --content-max: 1040px;
}

/* --------------------------------------------------------------------------
   Page themes
   -------------------------------------------------------------------------- */

body.theme-app {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  color: var(--ink);
  background:
    radial-gradient(ellipse at 20% 0%, rgba(90, 120, 200, 0.35), transparent 55%),
    radial-gradient(ellipse at 80% 100%, rgba(40, 60, 120, 0.4), transparent 50%),
    linear-gradient(160deg, var(--navy-900) 0%, var(--navy-800) 45%, #0d1638 100%);
}

body.theme-public {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  color: var(--ink-dark);
  background: var(--cream);
}

/* --------------------------------------------------------------------------
   Accessibility helpers
   -------------------------------------------------------------------------- */

.skip-link {
  position: absolute;
  top: -48px;
  left: 0.75rem;
  z-index: 100;
  padding: 0.5rem 1rem;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  background: var(--gold);
  color: var(--navy-800);
  font-family: var(--font-body);
  font-weight: 800;
  text-decoration: none;
  transition: top 0.15s;
}

.skip-link:focus {
  top: 0;
}

a:focus-visible,
button:focus-visible,
select:focus-visible,
input:focus-visible {
  outline: 3px solid var(--sun);
  outline-offset: 2px;
}

/* --------------------------------------------------------------------------
   Site navigation (injected by assets/nav.js)
   -------------------------------------------------------------------------- */

.site-nav {
  position: sticky;
  top: 0;
  z-index: 60;
  min-height: var(--nav-height);
  background: rgba(7, 13, 36, 0.92);
  border-bottom: 1px solid var(--gold-soft);
  backdrop-filter: blur(8px);
  font-family: var(--font-body);
}

.site-nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: var(--content-max);
  margin: 0 auto;
  min-height: var(--nav-height);
  padding: 0.4rem 1.25rem;
}

.site-nav-start {
  display: flex;
  align-items: center;
  gap: 0.35rem 0.75rem;
  min-width: 0;
  flex: 1 1 auto;
}

.site-nav-brand {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  text-decoration: none;
  line-height: 0;
}

.site-nav-brand .brand-icon {
  display: block;
  width: 2.5rem;
  height: 2.5rem;
  object-fit: contain;
}

.site-nav-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.15rem;
  margin: 0;
  padding: 0;
  list-style: none;
  min-width: 0;
}

.site-nav-links a {
  display: inline-block;
  padding: 0.42rem 0.7rem;
  border-radius: var(--radius-pill);
  color: var(--ink-muted);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 700;
  transition: background 0.15s, color 0.15s;
}

.site-nav-links a:hover {
  color: var(--gold);
  background: var(--gold-faint);
}

.site-nav-links a[aria-current="page"] {
  color: var(--gold);
  background: var(--gold-faint);
  box-shadow: inset 0 0 0 1px var(--gold-soft);
}

.site-nav-session {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.5rem;
  flex: 0 0 auto;
  margin-left: 0.75rem;
}

.nav-child-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.28rem 0.75rem 0.28rem 0.35rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--gold-soft);
  background: var(--gold-faint);
  color: var(--gold);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 800;
  white-space: nowrap;
}

.nav-child-chip .chip-avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.7rem;
  height: 1.7rem;
  border-radius: 50%;
  background: var(--navy-700);
  font-size: 1rem;
}

.nav-child-chip .chip-year {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--ink-faint);
}

.nav-signin {
  display: inline-block;
  padding: 0.42rem 0.95rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--gold-soft);
  background: transparent;
  color: var(--gold);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 800;
  white-space: nowrap;
}

.nav-signin:hover {
  background: var(--gold);
  color: var(--navy-800);
}

/* Slim variant for game / lesson pages */
.site-nav.slim {
  min-height: 44px;
}

.site-nav.slim .site-nav-inner {
  min-height: 44px;
  padding: 0.25rem 1rem;
}

.site-nav.slim .site-nav-brand .brand-icon {
  width: 2.15rem;
  height: 2.15rem;
}

.site-footer-link {
  display: inline-flex;
  line-height: 0;
  text-decoration: none;
}

.site-footer {
  margin-top: 2.5rem;
  padding: 2rem 1.25rem 2.5rem;
  border-top: 1px solid var(--gold-soft);
  background: rgba(7, 13, 36, 0.6);
  text-align: center;
}

.site-footer-inner {
  max-width: var(--content-max);
  margin: 0 auto;
}

.site-footer-logo {
  display: block;
  width: min(280px, 78vw);
  height: auto;
  margin: 0 auto;
  object-fit: contain;
}

.site-footer-tagline {
  margin: 0.85rem 0 0;
  font-size: 0.82rem;
  color: var(--ink-muted);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.65rem 1.4rem;
  border-radius: var(--radius-pill);
  border: 2px solid transparent;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 800;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.15s, background 0.15s, color 0.15s, border-color 0.15s;
}

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

.btn-primary {
  background: var(--gold);
  color: var(--navy-800);
}

.btn-primary:hover { background: #fff0b8; }

.btn-secondary {
  background: transparent;
  border-color: var(--gold-soft);
  color: var(--gold);
}

.btn-secondary:hover { border-color: var(--gold); }

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

.btn-green:hover { background: var(--leaf-deep); }

/* --------------------------------------------------------------------------
   Status chips (six curriculum progress statuses)
   -------------------------------------------------------------------------- */

.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.16rem 0.6rem;
  border-radius: var(--radius-pill);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: #fff;
}

.status-chip::before {
  content: "";
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: currentColor;
}

.status-not_started { background: rgba(107, 119, 148, 0.25); color: var(--status-not-started); }
.status-introduced { background: rgba(88, 168, 232, 0.2); color: var(--status-introduced); }
.status-practising { background: rgba(240, 180, 41, 0.2); color: var(--status-practising); }
.status-demonstrated { background: rgba(125, 216, 125, 0.2); color: var(--status-demonstrated); }
.status-mastered { background: rgba(47, 158, 68, 0.28); color: #63d883; }
.status-needs_review { background: rgba(240, 106, 106, 0.2); color: var(--status-needs-review); }

/* --------------------------------------------------------------------------
   Shared cards / panels
   -------------------------------------------------------------------------- */

.panel {
  padding: 1.1rem 1.2rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--gold-soft);
  background: rgba(10, 18, 48, 0.82);
  box-shadow: var(--shadow-card);
}

.page-wrap {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 1.75rem 1.25rem 3rem;
}

@media (max-width: 720px) {
  .site-nav-inner { padding: 0.35rem 0.85rem; gap: 0.5rem; }
  .site-nav-start { gap: 0.35rem 0.5rem; }
  .site-nav-links a { padding: 0.35rem 0.5rem; font-size: 0.8rem; }
  .nav-child-chip .chip-year { display: none; }
  .site-nav-brand .brand-icon { width: 2.35rem; height: 2.35rem; }
}