/* ============================================================
   Main CSS — Base, Layout, Shell v2 (Polish)
   نور Islamic App
   ============================================================ */

/* ── Reset ───────────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box; margin: 0; padding: 0;
  -webkit-tap-highlight-color: transparent;
}
html { font-size: 16px; -webkit-text-size-adjust: 100%; height: 100%; }

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--text-primary);
  background: var(--bg-base);
  direction: rtl;
  text-align: right;
  line-height: 1.55;
  min-height: 100dvh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color 300ms var(--ease-in-out), color 300ms var(--ease-in-out);
}

/* ── App Shell ───────────────────────────────────────────── */
#app {
  position: relative;
  width: 100%;
  max-width: var(--max-width);
  min-height: 100dvh;
  margin: 0 auto;
  background: var(--bg-base);
  overflow: hidden;
}

/* Gradient atmosphere */
#app::before {
  content: '';
  position: fixed;
  inset: 0;
  max-width: var(--max-width);
  margin: 0 auto;
  background: var(--gradient-mesh);
  pointer-events: none;
  z-index: var(--z-below);
}

/* Geometric pattern */
#app::after {
  content: '';
  position: fixed;
  inset: 0;
  max-width: var(--max-width);
  margin: 0 auto;
  background-image:
    repeating-linear-gradient(45deg,  var(--pattern-color) 0, var(--pattern-color) 1px, transparent 1px, transparent 48px),
    repeating-linear-gradient(-45deg, var(--pattern-color) 0, var(--pattern-color) 1px, transparent 1px, transparent 48px);
  pointer-events: none;
  z-index: var(--z-below);
}

/* ── Splash ──────────────────────────────────────────────── */
#splash {
  position: fixed;
  inset: 0;
  max-width: var(--max-width);
  margin: 0 auto;
  background: var(--bg-deep);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: var(--z-splash);
  transition: opacity 0.55s var(--ease-in-out), visibility 0.55s;
  gap: var(--space-10);
}

#splash.hidden { opacity: 0; visibility: hidden; pointer-events: none; }

.splash-body {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-5);
  animation: splashEntry 0.75s var(--ease-spring) both;
}

.splash-mark {
  width: 84px; height: 84px;
  background: var(--gradient-primary);
  border-radius: 24px;
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  box-shadow: var(--shadow-emerald), 0 0 80px rgba(16,185,129,0.15);
  position: relative; overflow: hidden;
}
.splash-mark::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.18) 0%, transparent 55%);
}

.splash-wordmark {
  text-align: center;
}
.splash-wordmark h1 {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  font-weight: 900;
  color: var(--text-primary);
  letter-spacing: -0.5px;
  line-height: 1;
}
.splash-wordmark p {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-top: var(--space-1);
  font-weight: 400;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.splash-loader-area {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  animation: fadeIn 0.6s ease 0.4s both;
}

.splash-track {
  width: 100px; height: 2px;
  background: var(--border-subtle);
  border-radius: var(--radius-full);
  overflow: hidden;
}
.splash-fill {
  height: 100%;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  animation: loadProgress 1.7s var(--ease-in-out) forwards;
}

.splash-verse {
  font-size: var(--text-sm);
  color: var(--text-muted);
  text-align: center;
  line-height: 2;
  letter-spacing: 0.3px;
}

/* ── Page Container ──────────────────────────────────────── */
#page-container {
  position: relative;
  width: 100%;
  min-height: 100dvh;
  padding-bottom: calc(var(--nav-height) + var(--safe-bottom) + 4px);
  padding-top: var(--safe-top);
  overflow-x: hidden;
}

/* ── Page ────────────────────────────────────────────────── */
.page {
  position: absolute; top: 0; left: 0;
  width: 100%; min-height: 100%;
  opacity: 0; pointer-events: none;
  transform: translateY(10px);
  transition: opacity var(--transition-page), transform var(--transition-page);
  will-change: opacity, transform;
}
.page.active {
  opacity: 1; pointer-events: all;
  transform: translateY(0);
  position: relative;
}
.page.exit { opacity: 0; transform: translateY(-6px); }

/* ── Page Header ─────────────────────────────────────────── */
.page-header {
  position: sticky;
  top: var(--safe-top);
  z-index: var(--z-above);
  height: var(--header-height);
  padding: 0 var(--space-4);
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.page-header-center {
  flex: 1;
  text-align: center;
}

.page-title {
  font-family: var(--font-display);
  font-size: var(--text-md);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

.page-subtitle {
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-top: 1px;
  font-weight: 400;
}

/* ── Page Content ────────────────────────────────────────── */
.page-content {
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

/* ── Bottom Navigation ───────────────────────────────────── */
#bottom-nav {
  position: fixed;
  bottom: 0;
  left: 50%; transform: translateX(-50%);
  width: 100%; max-width: var(--max-width);
  height: calc(var(--nav-height) + var(--safe-bottom));
  padding: 0 var(--space-2) var(--safe-bottom);
  background: var(--nav-bg);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-top: 1px solid var(--nav-border);
  display: flex;
  align-items: flex-start;
  justify-content: space-around;
  z-index: var(--z-nav);
  transition: background var(--transition-slow);
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  flex: 1;
  height: var(--nav-height);
  padding-top: var(--space-2);
  cursor: pointer;
  border: none;
  background: none;
  color: var(--nav-inactive);
  transition: color var(--transition-base), transform var(--transition-spring);
  position: relative;
  min-height: 44px;
  outline: none;
}

.nav-item:active { transform: scale(0.90); }

.nav-icon-pill {
  width: 46px; height: 26px;
  border-radius: var(--radius-full);
  display: flex; align-items: center; justify-content: center;
  transition: background var(--transition-base), transform var(--transition-spring);
}

.nav-item.active .nav-icon-pill {
  background: var(--color-primary-subtle);
}

.nav-item.active { color: var(--nav-active); }

.nav-icon { display: flex; align-items: center; justify-content: center; }
.nav-icon svg { display: block; transition: transform var(--transition-spring); }
.nav-item.active .nav-icon svg { transform: scale(1.08); }

.nav-label {
  font-family: var(--font-body);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1px;
  line-height: 1;
  white-space: nowrap;
}

/* ── Home Top Bar ────────────────────────────────────────── */
.home-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-4) var(--space-2);
}

.home-brand {
  display: flex; align-items: center; gap: var(--space-2);
}

.brand-icon {
  width: 34px; height: 34px;
  background: var(--gradient-primary);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  box-shadow: 0 2px 10px rgba(16,185,129,0.35);
}

.brand-name {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 900;
  color: var(--text-primary);
  letter-spacing: -0.3px;
}

.home-actions {
  display: flex; gap: var(--space-2);
}

/* ── Icon Button ─────────────────────────────────────────── */
.icon-btn {
  width: 38px; height: 38px;
  border-radius: 11px;
  border: 1px solid var(--border-default);
  background: var(--card-bg);
  color: var(--text-secondary);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  transition: color var(--transition-fast), background var(--transition-fast),
              border-color var(--transition-fast), transform var(--transition-spring);
  box-shadow: var(--shadow-xs);
}
.icon-btn:active { transform: scale(0.90); }
.icon-btn:hover {
  color: var(--color-primary);
  border-color: var(--color-primary-border);
  background: var(--color-primary-subtle);
}

/* ── Toast ───────────────────────────────────────────────── */
#toast-container {
  position: fixed;
  top: calc(var(--safe-top) + 12px);
  left: 50%; transform: translateX(-50%);
  z-index: var(--z-toast);
  display: flex; flex-direction: column; gap: var(--space-2);
  width: calc(100% - 28px);
  max-width: calc(var(--max-width) - 28px);
  pointer-events: none;
}

.toast {
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: 11px var(--space-4);
  box-shadow: var(--shadow-lg);
  font-size: var(--text-sm);
  color: var(--text-primary);
  animation: toastIn 0.3s var(--ease-spring) both;
  pointer-events: all;
  display: flex; align-items: center; gap: var(--space-3);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.toast.success { border-color: var(--color-primary-border); }
.toast.error   { border-color: rgba(248,113,113,0.3); }
.toast.info    { border-color: var(--color-accent-border); }
.toast-icon svg { display: block; }
.toast-text { flex: 1; font-weight: 500; }
.toast.removing { animation: toastOut 0.2s var(--ease-in-out) forwards; }

/* ── Install Banner ──────────────────────────────────────── */
#install-banner {
  position: fixed;
  bottom: calc(var(--nav-height) + var(--safe-bottom) + 10px);
  left: 50%; transform: translateX(-50%) translateY(130%);
  width: calc(100% - 28px);
  max-width: calc(var(--max-width) - 28px);
  background: var(--card-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--card-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-4);
  z-index: var(--z-nav);
  display: flex; align-items: center; gap: var(--space-3);
  box-shadow: var(--card-shadow);
  transition: transform 0.45s var(--ease-spring);
}
#install-banner.visible { transform: translateX(-50%) translateY(0); }
.install-icon { color: var(--color-primary); }
.install-info { flex: 1; }
.install-title { font-weight: 700; font-size: var(--text-sm); }
.install-sub   { font-size: var(--text-xs); color: var(--text-muted); margin-top: 2px; }

/* ── Typography ──────────────────────────────────────────── */
h1,h2,h3,h4 { font-family: var(--font-display); color: var(--text-primary); line-height: 1.25; }
p            { color: var(--text-secondary); line-height: 1.65; }
a            { color: var(--color-primary); text-decoration: none; }

/* ── Scrollbar ───────────────────────────────────────────── */
::-webkit-scrollbar { width: 3px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-default); border-radius: 2px; }

/* ── Selection ───────────────────────────────────────────── */
::selection { background: var(--color-primary-glow); color: var(--text-primary); }

/* ── Focus ───────────────────────────────────────────────── */
:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; border-radius: var(--radius-sm); }

/* ── Utilities ───────────────────────────────────────────── */
.sr-only { position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0; }
.text-center   { text-align: center; }
.text-muted    { color: var(--text-muted); }
.text-emerald  { color: var(--color-primary); }
.text-gold     { color: var(--color-accent); }
.font-bold     { font-weight: 700; }
.font-black    { font-weight: 900; }
.w-full        { width: 100%; }
.hidden        { display: none !important; }
.flex          { display: flex; }
.flex-col      { flex-direction: column; }
.items-center  { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }

/* Desktop centering */
@media (min-width: 501px) {
  body { background: #030508; }
  #app {
    border-left:  1px solid var(--border-subtle);
    border-right: 1px solid var(--border-subtle);
    box-shadow: 0 0 100px rgba(0,0,0,0.8);
  }
}

/* ── Reduced Motion ──────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *,*::before,*::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ── LTR Direction Overrides ─────────────────────────────── */
[dir="ltr"] body { text-align: left; }

/* Flip feature card chevron position */
[dir="ltr"] .feature-chevron {
  left: unset;
  right: var(--space-3);
}

/* Settings rows - icon on left side in LTR */
[dir="ltr"] .settings-row { flex-direction: row; }

/* Home topbar brand/actions use flex so direction handles it */
[dir="ltr"] .home-topbar { direction: ltr; }

/* Verse text always RTL regardless of UI language */
.verse-arabic,
.date-hijri { direction: rtl; text-align: center !important; unicode-bidi: isolate; }

/* Quran surah names always RTL */
.surah-arabic,
.fp-surah-name,
.mp-surah { unicode-bidi: plaintext; }

/* LTR typography refinements */
[dir="ltr"] .page-title,
[dir="ltr"] .section-title,
[dir="ltr"] .feature-title,
[dir="ltr"] .settings-label { letter-spacing: -0.1px; }

/* Flip chevron icons in LTR for nav arrows in settings rows */
[dir="ltr"] .settings-row > [style*="chevronLeft"] { transform: scaleX(-1); }

/* Tasbeeh clock & numbers stay direction-neutral */
.tasbeeh-count,
.date-time,
.prayer-time,
.fp-time,
.stat-value { font-variant-numeric: tabular-nums; }

/* Language picker active row */
.lang-row { display:flex;align-items:center;gap:var(--space-3);padding:var(--space-3) var(--space-4);border-bottom:1px solid var(--border-subtle);cursor:pointer;transition:background var(--transition-fast); }
.lang-row:last-child { border-bottom:none; }
.lang-row:active { background:var(--color-primary-subtle); }
.lang-row.active { background:var(--color-primary-subtle); }
.lang-flag { font-size:22px;line-height:1;flex-shrink:0; }
.lang-info { flex:1;min-width:0; }
.lang-native { font-size:var(--text-sm);font-weight:700;color:var(--text-primary); }
.lang-name { font-size:var(--text-xs);color:var(--text-muted);margin-top:1px; }
.lang-check { color:var(--color-primary);flex-shrink:0; }
.lang-check svg { display:block; }