/* ==========================================================================
   QuranicWords — core stylesheet (tokens, layout, header, navigation, filters)
   Brand: gold #ebc971 · dark green #053827 · light green #7ed957 · green #00bf63 · white
   Fonts are self-hosted (css/fonts, SIL OFL) — no third-party requests.
   ========================================================================== */

@font-face {
  font-family: 'Scheherazade New';
  src: url('fonts/ScheherazadeNew-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Scheherazade New';
  src: url('fonts/ScheherazadeNew-Bold.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Amiri Quran';
  src: url('fonts/AmiriQuran-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

:root {
  /* Brand */
  --brand-gold: #ebc971;
  --brand-dark: #053827;
  --brand-light: #7ed957;
  --brand-green: #00bf63;

  /* Dark theme (default) */
  --bg-base: #021d14;
  --bg-surface: #053827;
  --bg-surface-elevated: #0a4430;
  --bg-card: rgba(5, 56, 39, 0.72);
  --bg-card-hover: rgba(10, 68, 48, 0.95);
  --bg-glass: rgba(2, 29, 20, 0.86);
  --bg-inset: rgba(0, 0, 0, 0.22);

  --primary: #00bf63;            /* fills */
  --primary-hover: #00d46e;
  --primary-text: #3ee08c;       /* green used as text on the background */
  --on-primary: #022317;         /* text on green fills (AA) */
  --primary-soft: rgba(0, 191, 99, 0.14);
  --primary-border: rgba(0, 191, 99, 0.4);
  --light-green: #7ed957;
  --gold: #ebc971;
  --gold-text: #ebc971;
  --on-gold: #2a1f00;
  --gold-soft: rgba(235, 201, 113, 0.14);
  --gold-border: rgba(235, 201, 113, 0.4);
  /* Highlighted word/meaning - chosen for contrast: bright gold on the green dark theme. */
  --hl-text: #ffd54f;
  --hl-bg: rgba(255, 213, 79, 0.16);
  --danger: #ff8a7a;
  --danger-fill: #b3261e;

  --text-main: #f3f8f5;
  --text-muted: #bcd3c6;
  --text-dim: #9dbcab;
  --text-arabic: #ebc971;

  --border-subtle: rgba(255, 255, 255, 0.12);
  --border-strong: rgba(255, 255, 255, 0.24);
  --focus-ring: #ebc971;
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.5);

  --font-ui: system-ui, -apple-system, 'Segoe UI', Roboto, 'Noto Sans', 'Helvetica Neue', Arial, 'Scheherazade New', sans-serif;
  --font-arabic: 'Scheherazade New', 'Amiri Quran', 'Noto Naskh Arabic', serif;
  --font-verse: 'Amiri Quran', 'Scheherazade New', 'Noto Naskh Arabic', serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-full: 9999px;
  --container-max: 1280px;
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  color-scheme: dark;
}

[data-theme="light"] {
  --bg-base: #f4faf6;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #e8f4ec;
  --bg-card: #ffffff;
  --bg-card-hover: #ffffff;
  --bg-glass: rgba(255, 255, 255, 0.92);
  --bg-inset: #f0f7f2;

  --primary-text: #006b37;
  --primary-soft: rgba(0, 191, 99, 0.12);
  --primary-border: rgba(0, 120, 60, 0.35);
  --gold-text: #7a5a00;
  --gold-soft: rgba(235, 201, 113, 0.28);
  --gold-border: rgba(160, 120, 0, 0.35);
  --hl-text: #006b37;
  --hl-bg: rgba(0, 191, 99, 0.14);
  --danger: #b3261e;

  --text-main: #062b1e;
  --text-muted: #2f5547;
  --text-dim: #476a5b;
  --text-arabic: #053827;

  --border-subtle: rgba(5, 56, 39, 0.14);
  --border-strong: rgba(5, 56, 39, 0.3);
  --focus-ring: #006b37;
  --shadow-md: 0 8px 24px rgba(5, 56, 39, 0.1);
  --shadow-lg: 0 16px 40px rgba(5, 56, 39, 0.16);
  color-scheme: light;
}

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

html { font-size: 16px; -webkit-text-size-adjust: 100%; }

body {
  background-color: var(--bg-base);
  background-image:
    radial-gradient(circle at 12% 8%, rgba(0, 191, 99, 0.08) 0%, transparent 42%),
    radial-gradient(circle at 88% 18%, rgba(235, 201, 113, 0.06) 0%, transparent 38%);
  background-attachment: fixed;
  color: var(--text-main);
  font-family: var(--font-ui);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

img, svg { max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }
a { color: var(--primary-text); }
ul, ol { list-style: none; }
[hidden] { display: none !important; }

/* Focus: always visible for keyboard users */
:focus { outline: none; }
:focus-visible {
  outline: 3px solid var(--focus-ring);
  outline-offset: 2px;
  border-radius: 6px;
}
main:focus-visible { outline: none; }

.visually-hidden {
  position: absolute !important;
  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;
  inset-inline-start: 12px;
  top: -60px;
  z-index: 1000;
  background: var(--gold);
  color: var(--on-gold);
  padding: 10px 16px;
  border-radius: var(--radius-md);
  font-weight: 700;
  text-decoration: none;
}
.skip-link:focus { top: 12px; }

.ico { display: inline-block; line-height: 1; }
.muted { color: var(--text-muted); }
.error-text { color: var(--danger); }
.ar, [lang="ar"] { font-family: var(--font-arabic); }

.container { max-width: var(--container-max); margin: 0 auto; padding: 0 16px; }

/* ---------------- Header ---------------- */
.app-header {
  background: var(--bg-glass);
  border-bottom: 1px solid var(--border-subtle);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 64px;
  flex-wrap: wrap;
  padding-top: 8px;
  padding-bottom: 8px;
}
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--text-main); min-width: 0; }
.brand-logo { width: 40px; height: 40px; border-radius: 50%; flex-shrink: 0; }
.brand-info { display: flex; flex-direction: column; min-width: 0; }
.brand-title { font-size: 1.1rem; font-weight: 800; letter-spacing: -0.01em; }
.brand-sub { font-size: 0.78rem; color: var(--text-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.header-actions { display: flex; align-items: center; gap: 8px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 40px;
  padding: 8px 16px;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface-elevated);
  color: var(--text-main);
  cursor: pointer;
  text-decoration: none;
  transition: background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
  user-select: none;
}
.btn:hover { border-color: var(--primary-border); background: var(--bg-card-hover); }
.btn:active { transform: translateY(1px); }
.btn:disabled, .btn[aria-disabled="true"] { opacity: 0.55; cursor: not-allowed; }
.btn-primary { background: var(--primary); color: var(--on-primary); border-color: transparent; }
.btn-primary:hover { background: var(--primary-hover); color: var(--on-primary); }
.btn-gold { background: var(--gold); color: var(--on-gold); border-color: transparent; }
.btn-gold:hover { background: #f2d68d; color: var(--on-gold); }
.btn-danger { background: transparent; color: var(--danger); border-color: var(--danger); }
.btn-danger:hover { background: var(--danger-fill); color: #fff; }
.btn-icon { width: 40px; height: 40px; padding: 0; flex-shrink: 0; }
.btn-sm { min-height: 32px; padding: 4px 10px; font-size: 0.82rem; }
.btn-sm.btn-icon { width: 34px; height: 34px; }
.btn-lg { min-height: 48px; padding: 12px 22px; font-size: 1rem; }
.is-disabled { opacity: 0.55; }

.lang-select, .filter-select {
  background: var(--bg-surface-elevated);
  color: var(--text-main);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  min-height: 40px;
  padding: 6px 10px;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  max-width: 100%;
}
.lang-select:hover, .filter-select:hover { border-color: var(--primary-border); }

/* ---------------- Navigation ---------------- */
.main-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-subtle);
}
.nav-list { display: flex; gap: 4px; padding-top: 6px; padding-bottom: 6px; flex-wrap: wrap; }
.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 40px;
  padding: 6px 12px;
  border-radius: var(--radius-md);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  transition: background var(--transition-fast), color var(--transition-fast);
}
.nav-link:hover { color: var(--text-main); background: var(--primary-soft); }
.nav-link[aria-current="page"] { background: var(--primary); color: var(--on-primary); }
.nav-badge {
  min-width: 20px;
  height: 20px;
  padding: 0 6px;
  border-radius: var(--radius-full);
  background: var(--gold);
  color: var(--on-gold);
  font-size: 0.72rem;
  font-weight: 800;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* ---------------- Progress strip ---------------- */
.progress-strip {
  display: flex;
  align-items: center;
  gap: 10px 18px;
  flex-wrap: wrap;
  padding: 10px 0;
  font-size: 0.86rem;
}
.ps-item { display: inline-flex; align-items: center; gap: 8px; color: var(--text-main); text-decoration: none; border-radius: var(--radius-md); }
.ps-level { flex: 1 1 220px; min-width: 0; }
.ps-level-badge {
  background: var(--gold);
  color: var(--on-gold);
  font-weight: 800;
  border-radius: var(--radius-full);
  padding: 2px 10px;
  white-space: nowrap;
}
.ps-xp { display: flex; flex-direction: column; flex: 1; min-width: 0; }
.ps-xp-text { font-size: 0.74rem; color: var(--text-muted); }
.ps-streak { font-weight: 700; color: var(--text-muted); }
.ps-streak.on { color: var(--gold-text); }
.ps-goal.met { color: var(--primary-text); font-weight: 700; }
.ps-known { color: var(--text-muted); font-weight: 600; }

progress {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 8px;
  border: none;
  border-radius: var(--radius-full);
  background: var(--bg-surface-elevated);
  overflow: hidden;
}
progress::-webkit-progress-bar { background: var(--bg-surface-elevated); border-radius: var(--radius-full); }
progress::-webkit-progress-value { background: linear-gradient(90deg, var(--primary), var(--light-green)); border-radius: var(--radius-full); }
progress::-moz-progress-bar { background: linear-gradient(90deg, var(--primary), var(--light-green)); border-radius: var(--radius-full); }

.goal-ring { width: 26px; height: 26px; }
.goal-ring-bg { fill: none; stroke: var(--bg-surface-elevated); stroke-width: 3.5; }
.goal-ring-fg { fill: none; stroke: var(--primary); stroke-width: 3.5; stroke-linecap: round; transition: stroke-dashoffset var(--transition-normal); }

/* ---------------- Status / loading ---------------- */
.app-status {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  padding: 70px 16px;
  text-align: center;
  color: var(--text-muted);
}
.app-status.is-error { color: var(--danger); }
.spinner {
  width: 40px; height: 40px;
  border: 3px solid var(--primary-soft);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------------- Hero ---------------- */
.hero-section { padding: 28px 0 12px; text-align: center; }
.hero-title { font-size: clamp(1.7rem, 5vw, 2.8rem); font-weight: 900; line-height: 1.15; letter-spacing: -0.02em; margin-bottom: 10px; }
.hero-sub { font-size: clamp(0.98rem, 2vw, 1.1rem); color: var(--text-muted); max-width: 680px; margin: 0 auto 22px; }
.hero-cta { margin-bottom: 8px; }
.stats-ribbon {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 10px;
  max-width: 980px;
  margin: 0 auto 22px;
}
.stat-chip {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 12px 10px;
  display: flex;
  flex-direction: column-reverse;
  align-items: center;
  text-align: center;
  min-width: 0;
}
.progress-stats .stat-chip { flex-direction: column; }
.stat-val { font-size: 1.4rem; font-weight: 800; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.stat-val.primary { color: var(--primary-text); }
.stat-val.gold { color: var(--gold-text); }
.stat-val.light { color: var(--light-green); }
[data-theme="light"] .stat-val.light { color: #2d7a12; }
.stat-lbl { font-size: 0.74rem; color: var(--text-muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; }

/* ---------------- Filter bar ---------------- */
.filter-bar {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 14px;
  margin: 12px 0 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.search-box-wrap { position: relative; }
.search-icon { position: absolute; inset-inline-start: 14px; top: 50%; transform: translateY(-50%); pointer-events: none; }
.search-input {
  width: 100%;
  height: 48px;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding-inline: 44px 84px;
  color: var(--text-main);
  font-size: 1rem;
}
.search-input::placeholder { color: var(--text-dim); }
.search-input:focus-visible { outline: 3px solid var(--focus-ring); outline-offset: 1px; }
.search-input::-webkit-search-cancel-button { display: none; }
.search-clear-btn {
  position: absolute;
  inset-inline-end: 8px;
  top: 50%;
  transform: translateY(-50%);
  width: 36px; height: 36px;
  background: transparent;
  border: none;
  border-radius: var(--radius-full);
  color: var(--text-muted);
  cursor: pointer;
}
.search-clear-btn:hover { color: var(--text-main); background: var(--primary-soft); }
.search-shortcut-badge {
  position: absolute;
  inset-inline-end: 50px;
  top: 50%;
  transform: translateY(-50%);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  padding: 1px 6px;
  font-size: 0.72rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
  pointer-events: none;
}
.filter-row { display: flex; flex-wrap: wrap; gap: 10px; align-items: flex-end; }
.field { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.field label { font-size: 0.74rem; font-weight: 700; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.04em; }
.filter-buttons { display: flex; gap: 8px; flex-wrap: wrap; margin-inline-start: auto; }
.filter-status { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; min-height: 24px; }
.result-count { font-size: 0.86rem; color: var(--text-muted); }
.root-chip {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--primary-soft);
  border: 1px solid var(--primary-border);
  border-radius: var(--radius-full);
  padding: 2px 4px 2px 12px;
  font-size: 0.86rem;
}
.root-chip .ar { font-size: 1.1rem; }
.chip-remove { width: 28px; height: 28px; border-radius: 50%; border: none; background: transparent; cursor: pointer; color: var(--text-main); }
.chip-remove:hover { background: var(--primary-border); }

.view { margin-bottom: 40px; }
.section-head { margin: 18px 0 16px; }
.view-title { font-size: 1.5rem; font-weight: 800; line-height: 1.25; }

/* ---------------- Footer ---------------- */
.app-footer {
  margin-top: 60px;
  border-top: 1px solid var(--border-subtle);
  padding: 32px 0 28px;
  background: var(--bg-surface);
  color: var(--text-muted);
  font-size: 0.88rem;
}
[data-theme="light"] .app-footer { background: var(--bg-surface-elevated); }
.footer-inner { display: flex; flex-direction: column; align-items: center; gap: 14px; text-align: center; }
.footer-brand { display: flex; align-items: center; gap: 10px; color: var(--text-main); font-size: 1rem; }
.footer-brand img { border-radius: 50%; }
.footer-about { max-width: 620px; }
.footer-links { display: flex; gap: 18px; flex-wrap: wrap; justify-content: center; }
.footer-link { color: var(--text-muted); font-weight: 600; }
.footer-link:hover { color: var(--primary-text); }

/* ---------------- Responsive ---------------- */
@media (max-width: 720px) {
  .brand-sub, .search-shortcut-badge { display: none; }
  .search-input { padding-inline-end: 48px; }
  .nav-list { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 2px; }
  .nav-link { flex-direction: column; gap: 0; padding: 4px 2px; font-size: 0.72rem; text-align: center; min-height: 48px; justify-content: center; }
  .nav-link .ico { font-size: 1.05rem; }
  .nav-badge { position: absolute; top: 2px; inset-inline-end: 6px; height: 17px; min-width: 17px; font-size: 0.66rem; padding: 0 4px; }
  .stats-ribbon { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 6px; }
  .stat-chip { padding: 8px 4px; }
  .stat-val { font-size: 1.08rem; }
  .stat-lbl { font-size: 0.64rem; letter-spacing: 0.02em; }
  .filter-row .field { flex: 1 1 140px; }
  .filter-row .filter-select { width: 100%; }
  .filter-buttons { margin-inline-start: 0; width: 100%; }
  .filter-buttons .btn { flex: 1; }
  .lang-select { max-width: 150px; }
}

@media (max-width: 420px) {
  .header-inner { flex-wrap: nowrap; gap: 8px; }
  .brand { gap: 8px; }
  .brand-logo { width: 34px; height: 34px; }
  .brand-title { font-size: 0.98rem; }
  .header-actions { gap: 6px; }
  .lang-select { max-width: 116px; padding-inline: 6px; font-size: 0.82rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}