/* ============================================================
   BONCE — Theme System (colours chosen to sit well with the coral logo)
   All colours, fonts and visual tokens live here.
   A theme is chosen by data-theme on <html> or <body>.
   The list of themes shown in pickers lives in themes.js.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Plus+Jakarta+Sans:wght@500;600;700;800&family=Fraunces:opsz,wght@9..144,500;9..144,600;9..144,700;9..144,800&family=Nunito:wght@500;600;700;800;900&family=Baloo+2:wght@600;700;800&family=Fredoka:wght@500;600;700&display=swap');

/* ── Base reset ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; text-rendering: optimizeLegibility; }

/* ============================================================
   SHARED TOKENS (every theme starts from these)
   ============================================================ */
:root {
  --font-heading:       'Plus Jakarta Sans', 'Inter', system-ui, sans-serif;
  --font-body:          'Inter', system-ui, -apple-system, sans-serif;
  --font-ui:            'Inter', system-ui, -apple-system, sans-serif;

  --radius-sm:          6px;
  --radius-card:        14px;
  --radius-button:      10px;
  --radius-pill:        999px;

  --space-xs:   4px;
  --space-sm:   8px;
  --space-md:   16px;
  --space-lg:   24px;
  --space-xl:   40px;
  --space-2xl:  64px;

  --transition-fast:    120ms ease;
  --transition-base:    200ms ease;
  --transition-slow:    350ms ease;

  --color-on-primary:   #ffffff;

  --logo-url:           url('assets/images/brand/logo.svg');
  --hero-bg:            url('assets/images/brand/hero.jpg');
}

/* ============================================================
   THEME: edge — warm charcoal with limpet coral (default for students)
   (Ember)
   ============================================================ */
:root,
[data-theme="edge"] {
  color-scheme: dark;
  --color-on-primary:   #1c1917;
  --color-bg:           #15120f;
  --color-surface:      #1f1b17;
  --color-surface-2:    #2a2520;
  --color-border:       #3a332c;
  --color-primary:      #ff8a65;
  --color-primary-dark: #ff7448;
  --color-primary-glow: rgba(255,138,101,0.18);
  --color-accent:       #5fd3c6;
  --color-accent-2:     #ffc857;
  --color-success:      #5ad08a;
  --color-warning:      #fbbf24;
  --color-danger:       #f87171;
  --color-text:         #f6efe8;
  --color-text-muted:   #b3a698;
  --color-text-faint:   #6b6158;
  --color-xp:           #ffc857;
  --color-streak:       #ff8a65;
  --color-badge:        #5fd3c6;
  --shadow-card:        0 1px 2px rgba(0,0,0,0.3), 0 8px 24px rgba(0,0,0,0.25);
  --shadow-glow:        0 0 0 3px var(--color-primary-glow);
  --shadow-button:      0 1px 2px rgba(0,0,0,0.3);
}

/* ============================================================
   THEME: midnight — dark teal with coral
   (Deep Sea)
   ============================================================ */
[data-theme="midnight"] {
  color-scheme: dark;
  --color-on-primary:   #10181b;
  --color-bg:           #0a1c22;
  --color-surface:      #10282f;
  --color-surface-2:    #17343c;
  --color-border:       #22444d;
  --color-primary:      #ff9b73;
  --color-primary-dark: #ff875a;
  --color-primary-glow: rgba(255,155,115,0.18);
  --color-accent:       #6ee7d8;
  --color-accent-2:     #ffd479;
  --color-success:      #4ade80;
  --color-warning:      #fbbf24;
  --color-danger:       #f87171;
  --color-text:         #e8f4f4;
  --color-text-muted:   #93b3b6;
  --color-text-faint:   #4a6a70;
  --color-xp:           #ffd479;
  --color-streak:       #ff9b73;
  --color-badge:        #6ee7d8;
  --radius-card:        12px;
  --radius-button:      8px;
  --shadow-card:        0 1px 2px rgba(0,0,0,0.35), 0 6px 20px rgba(0,0,0,0.25);
  --shadow-glow:        0 0 0 3px var(--color-primary-glow);
  --shadow-button:      0 1px 2px rgba(0,0,0,0.3);
}

/* ============================================================
   THEME: cosmic — deep plum night with coral and lilac
   (Cosmic)
   ============================================================ */
[data-theme="cosmic"] {
  color-scheme: dark;
  --color-on-primary:   #1c1917;
  --color-bg:           #170f20;
  --color-surface:      #21162d;
  --color-surface-2:    #2c1f3a;
  --color-border:       #3b2b4d;
  --color-primary:      #ff8a65;
  --color-primary-dark: #ff7448;
  --color-primary-glow: rgba(255,138,101,0.18);
  --color-accent:       #c4a1ff;
  --color-accent-2:     #ffd479;
  --color-success:      #4ade80;
  --color-warning:      #fbbf24;
  --color-danger:       #fb7185;
  --color-text:         #f4ecfb;
  --color-text-muted:   #b3a3c6;
  --color-text-faint:   #66577a;
  --color-xp:           #ffd479;
  --color-streak:       #ff8a65;
  --color-badge:        #c4a1ff;
  --font-heading:       'Baloo 2', 'Nunito', sans-serif;
  --shadow-card:        0 1px 2px rgba(0,0,0,0.3), 0 8px 24px rgba(0,0,0,0.3);
  --shadow-glow:        0 0 0 3px var(--color-primary-glow);
  --shadow-button:      0 1px 2px rgba(0,0,0,0.3);
}

/* ============================================================
   THEME: light — clean warm white, deep teal with coral
   (Daylight)
   ============================================================ */
[data-theme="light"] {
  color-scheme: light;
  --color-on-primary:   #ffffff;
  --color-bg:           #faf7f4;
  --color-surface:      #ffffff;
  --color-surface-2:    #f3eee9;
  --color-border:       #e8e0d8;
  --color-primary:      #0f5560;
  --color-primary-dark: #0b444d;
  --color-primary-glow: rgba(15,85,96,0.12);
  --color-accent:       #ff8a65;
  --color-accent-2:     #f59e0b;
  --color-success:      #15803d;
  --color-warning:      #b45309;
  --color-danger:       #dc2626;
  --color-text:         #1c1917;
  --color-text-muted:   #6b625a;
  --color-text-faint:   #cfc6bd;
  --color-xp:           #d9480f;
  --color-streak:       #e8590c;
  --color-badge:        #0f5560;
  --shadow-card:        0 1px 2px rgba(28,25,23,0.05), 0 2px 8px rgba(28,25,23,0.05);
  --shadow-glow:        0 0 0 3px var(--color-primary-glow);
  --shadow-button:      0 1px 2px rgba(28,25,23,0.08);
}

/* ============================================================
   THEME: calm — warm paper, sage green, clay highlights
   (Sage & Clay)
   ============================================================ */
[data-theme="calm"] {
  color-scheme: light;
  --color-on-primary:   #ffffff;
  --color-bg:           #f5f3ec;
  --color-surface:      #fffdf8;
  --color-surface-2:    #eeebe1;
  --color-border:       #e0dacb;
  --color-primary:      #3f6b55;
  --color-primary-dark: #335a47;
  --color-primary-glow: rgba(63,107,85,0.14);
  --color-accent:       #e07a55;
  --color-accent-2:     #d9a441;
  --color-success:      #3f6b55;
  --color-warning:      #b45309;
  --color-danger:       #b4533c;
  --color-text:         #24231f;
  --color-text-muted:   #716b5d;
  --color-text-faint:   #cdc5b4;
  --color-xp:           #c2410c;
  --color-streak:       #e07a55;
  --color-badge:        #3f6b55;
  --font-heading:       'Fraunces', Georgia, serif;
  --radius-card:        16px;
  --shadow-card:        0 1px 2px rgba(60,50,30,0.05), 0 4px 14px rgba(60,50,30,0.05);
  --shadow-glow:        0 0 0 3px var(--color-primary-glow);
  --shadow-button:      0 1px 2px rgba(60,50,30,0.08);
}

/* ============================================================
   THEME: bright — bold plum and coral
   (Berry Pop)
   ============================================================ */
[data-theme="bright"] {
  color-scheme: light;
  --color-on-primary:   #ffffff;
  --color-bg:           #fdf4f6;
  --color-surface:      #ffffff;
  --color-surface-2:    #f8e9ee;
  --color-border:       #f1d6df;
  --color-primary:      #8e2c6b;
  --color-primary-dark: #76225a;
  --color-primary-glow: rgba(142,44,107,0.14);
  --color-accent:       #ff8a65;
  --color-accent-2:     #facc15;
  --color-success:      #15803d;
  --color-warning:      #b45309;
  --color-danger:       #e11d48;
  --color-text:         #2a1422;
  --color-text-muted:   #7a5a6c;
  --color-text-faint:   #e3c8d3;
  --color-xp:           #d9480f;
  --color-streak:       #ff7448;
  --color-badge:        #8e2c6b;
  --font-heading:       'Baloo 2', 'Nunito', sans-serif;
  --radius-card:        18px;
  --radius-button:      12px;
  --shadow-card:        0 1px 2px rgba(42,20,34,0.05), 0 6px 18px rgba(142,44,107,0.08);
  --shadow-glow:        0 0 0 3px var(--color-primary-glow);
  --shadow-button:      0 1px 2px rgba(42,20,34,0.1);
}

/* ============================================================
   THEME: spark — sunny and orange all the way
   (Sunshine)
   ============================================================ */
[data-theme="spark"] {
  color-scheme: light;
  --color-on-primary:   #ffffff;
  --color-bg:           #fff7ef;
  --color-surface:      #ffffff;
  --color-surface-2:    #fdeedd;
  --color-border:       #f7dcc2;
  --color-primary:      #c2410c;
  --color-primary-dark: #a8360a;
  --color-primary-glow: rgba(194,65,12,0.14);
  --color-accent:       #0f766e;
  --color-accent-2:     #facc15;
  --color-success:      #15803d;
  --color-warning:      #a16207;
  --color-danger:       #dc2626;
  --color-text:         #2b1d14;
  --color-text-muted:   #85674f;
  --color-text-faint:   #ecd2bb;
  --color-xp:           #c2410c;
  --color-streak:       #ea580c;
  --color-badge:        #0f766e;
  --font-heading:       'Baloo 2', 'Nunito', sans-serif;
  --radius-card:        18px;
  --radius-button:      12px;
  --shadow-card:        0 1px 2px rgba(43,29,20,0.05), 0 6px 18px rgba(194,65,12,0.07);
  --shadow-glow:        0 0 0 3px var(--color-primary-glow);
  --shadow-button:      0 1px 2px rgba(43,29,20,0.1);
}

/* ============================================================
   THEME: focus — minimal black and white, a dash of coral
   (Ink)
   ============================================================ */
[data-theme="focus"] {
  color-scheme: light;
  --color-on-primary:   #ffffff;
  --color-bg:           #f7f7f6;
  --color-surface:      #ffffff;
  --color-surface-2:    #f0f0ee;
  --color-border:       #e3e3e0;
  --color-primary:      #1c1917;
  --color-primary-dark: #000000;
  --color-primary-glow: rgba(28,25,23,0.12);
  --color-accent:       #ff8a65;
  --color-accent-2:     #ca8a04;
  --color-success:      #15803d;
  --color-warning:      #b45309;
  --color-danger:       #b91c1c;
  --color-text:         #1c1917;
  --color-text-muted:   #64615c;
  --color-text-faint:   #cdcac5;
  --color-xp:           #c2410c;
  --color-streak:       #ff7448;
  --color-badge:        #1c1917;
  --radius-card:        8px;
  --radius-button:      6px;
  --shadow-card:        0 1px 2px rgba(0,0,0,0.04);
  --shadow-glow:        0 0 0 3px var(--color-primary-glow);
  --shadow-button:      none;
}

/* ============================================================
   THEME: parent — calm and professional, deep teal with coral (parents, teachers, admin)
   (Adult dashboards)
   ============================================================ */
[data-theme="parent"] {
  color-scheme: light;
  --color-on-primary:   #ffffff;
  --color-bg:           #f7f6f4;
  --color-surface:      #ffffff;
  --color-surface-2:    #f1efec;
  --color-border:       #e5e2dd;
  --color-primary:      #1f5a66;
  --color-primary-dark: #174853;
  --color-primary-glow: rgba(31,90,102,0.12);
  --color-accent:       #ff8a65;
  --color-accent-2:     #f59e0b;
  --color-success:      #0e9f6e;
  --color-warning:      #d97706;
  --color-danger:       #dc2626;
  --color-text:         #1c1917;
  --color-text-muted:   #625d57;
  --color-text-faint:   #cbc6bf;
  --color-xp:           #ea580c;
  --color-streak:       #ff7448;
  --color-badge:        #1f5a66;
  --radius-card:        12px;
  --radius-button:      8px;
  --shadow-card:        0 1px 2px rgba(28,25,23,0.05), 0 1px 3px rgba(28,25,23,0.06);
  --shadow-glow:        0 0 0 3px var(--color-primary-glow);
  --shadow-button:      0 1px 2px rgba(28,25,23,0.08);
}

/* ============================================================
   GLOBAL BASE STYLES (theme-aware)
   ============================================================ */
body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.55;
  min-height: 100vh;
  transition: background-color var(--transition-slow), color var(--transition-slow);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--color-text);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: opacity var(--transition-fast), color var(--transition-fast);
}
a:hover { opacity: 0.85; }

button {
  font-family: var(--font-ui);
  cursor: pointer;
  border: none;
  outline: none;
  transition: background-color var(--transition-base), border-color var(--transition-base), color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-fast), opacity var(--transition-base);
}
:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; }

input, textarea, select {
  font-family: var(--font-body);
  font-size: 1rem;
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-button);
  padding: 10px 14px;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
  width: 100%;
}
input::placeholder, textarea::placeholder { color: var(--color-text-faint); }
input:focus, textarea:focus, select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-glow);
}

/* ── Icons (see icons.js) ───────────────────────────────── */
.icon { width: 1.15em; height: 1.15em; flex-shrink: 0; vertical-align: -0.2em; stroke-width: 2; }
.icon-lg { width: 1.5em; height: 1.5em; }
i[data-icon] { display: inline-block; width: 1.15em; height: 1.15em; }

/* ── Utility classes ────────────────────────────────────── */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: var(--space-lg);
  box-shadow: var(--shadow-card);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius-button);
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 0.92rem;
  line-height: 1.2;
  letter-spacing: -0.005em;
  cursor: pointer;
  border: 1px solid transparent;
  text-decoration: none;
  white-space: nowrap;
}
.btn:disabled { opacity: 0.55; cursor: not-allowed; }

.btn-primary {
  background: var(--color-primary);
  color: var(--color-on-primary);
  box-shadow: var(--shadow-button);
}
.btn-primary:hover { background: var(--color-primary-dark); opacity: 1; }
.btn-primary:active { transform: translateY(1px); }

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border-color: var(--color-border);
  box-shadow: var(--shadow-button);
}
.btn-secondary:hover { background: var(--color-surface-2); opacity: 1; }

.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
  border-color: var(--color-border);
}
.btn-ghost:hover { color: var(--color-text); background: var(--color-surface-2); opacity: 1; }

.btn-danger {
  background: transparent;
  color: var(--color-danger);
  border: 1px solid color-mix(in srgb, var(--color-danger) 35%, transparent);
}
.btn-danger:hover { background: var(--color-danger); color: #fff; }

.text-muted { color: var(--color-text-muted); }
.text-primary { color: var(--color-primary); }
.text-success { color: var(--color-success); }
.text-danger { color: var(--color-danger); }
.text-warning { color: var(--color-warning); }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 10px;
  border-radius: var(--radius-pill);
  font-size: 0.76rem;
  font-weight: 600;
  font-family: var(--font-ui);
}
.badge-primary { background: var(--color-primary-glow); color: var(--color-primary); }
.badge-success { background: color-mix(in srgb, var(--color-success) 14%, transparent); color: var(--color-success); }
.badge-warning { background: color-mix(in srgb, var(--color-warning) 16%, transparent); color: var(--color-warning); }

/* ── Loading spinner ────────────────────────────────────── */
.spinner {
  width: 36px; height: 36px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Toast notifications ────────────────────────────────── */
#toast-container {
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-lg);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}
.toast {
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-button);
  padding: 12px 16px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.15);
  font-family: var(--font-ui);
  font-size: 0.9rem;
  animation: slideIn 0.25s ease;
  max-width: 340px;
}
.toast.success { border-left-color: var(--color-success); }
.toast.error   { border-left-color: var(--color-danger); }
.toast.warning { border-left-color: var(--color-warning); }
@keyframes slideIn {
  from { transform: translateY(8px); opacity: 0; }
  to   { transform: translateY(0); opacity: 1; }
}

/* ── Page transitions ───────────────────────────────────── */
.page-fade { animation: fadeIn 0.25s ease; }
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Responsive helpers ─────────────────────────────────── */
@media (max-width: 768px) {
  :root {
    --space-xl: 24px;
    --space-2xl: 40px;
  }
  #toast-container { left: var(--space-md); right: var(--space-md); bottom: var(--space-md); }
  .toast { max-width: none; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* ── Help button in page headers (Lobe Limpet) ─────────────── */
.help-btn { display: inline-flex; align-items: center; gap: 6px; flex-shrink: 0;
  padding: 7px 10px; border-radius: var(--radius-button); text-decoration: none;
  font-family: var(--font-ui); font-size: 0.85rem; font-weight: 600; color: var(--color-text-muted); }
.help-btn:hover { background: var(--color-surface-2); color: var(--color-text); }
.help-btn .icon { width: 18px; height: 18px; }
.help-btn.help-compact span { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
@media (max-width: 600px) { .help-btn span { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); } .help-btn { padding: 7px; } }
.help-inline { font-size: 0.82rem; font-weight: 600; color: var(--color-text-muted); text-decoration: underline; text-underline-offset: 2px; }
.help-inline:hover { color: var(--color-primary); }