/* ============================================================
   QURAN APP — LAYOUT
   layout.css · app shell · header · sidebar · footer
   ============================================================ */

.app-shell {
  display: grid;
  grid-template-areas:
    "sidebar header"
    "sidebar main"
    "sidebar footer";
  grid-template-columns: var(--sidebar-w) 1fr;
  grid-template-rows: var(--header-h) 1fr auto;
  min-height: 100vh;
  transition: grid-template-columns var(--duration-base) var(--ease);
}

.app-shell.is-collapsed {
  grid-template-columns: var(--sidebar-w-min) 1fr;
}

/* ============================================================
   HEADER
   ============================================================ */
.app-header {
  grid-area: header;
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);

  height: var(--header-h);
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: 0 var(--space-6);

  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--color-border);
}
[data-theme="dark"] .app-header {
  background: rgba(13, 32, 24, 0.8);
}

.app-header__toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  transition: background-color var(--duration-fast) var(--ease),
              color var(--duration-fast) var(--ease);
}
.app-header__toggle:hover {
  background: var(--color-bg-subtle);
  color: var(--color-text);
}

.app-header__title {
  font-size: var(--text-md);
  font-weight: var(--font-semibold);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text);
}

.app-header__spacer { flex: 1; }

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

/* Header search */
.header-search {
  position: relative;
  width: 100%;
  max-width: 340px;
}
.header-search input {
  width: 100%;
  height: 36px;
  padding: 0 var(--space-4) 0 var(--space-10);

  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);       /* ← rectangular */
  background: var(--color-bg-subtle);

  font-size: var(--text-sm);
  transition: border-color var(--duration-fast) var(--ease),
              background-color var(--duration-fast) var(--ease),
              box-shadow var(--duration-fast) var(--ease);
}
.header-search input::placeholder { color: var(--color-text-subtle); }
.header-search input:focus {
  outline: none;
  background: var(--color-bg-elevated);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-focus);
}
.header-search svg {
  position: absolute;
  left: var(--space-3);
  top: 50%;
  transform: translateY(-50%);
  width: 16px; height: 16px;
  color: var(--color-text-subtle);
  pointer-events: none;
}

/* Icon button */
.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  transition: background-color var(--duration-fast) var(--ease),
              color var(--duration-fast) var(--ease);
  position: relative;
}
.icon-btn:hover {
  background: var(--color-bg-subtle);
  color: var(--color-text);
}
.icon-btn svg { width: 18px; height: 18px; }

/* Avatar */
.avatar {
  width: 34px; height: 34px;
  border-radius: var(--radius-pill);      /* ← round (semantic) */
  background: linear-gradient(135deg, var(--mudhamatan-500), var(--mudhamatan-700));
  color: var(--color-text-invert);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-semibold);
  font-size: var(--text-xs);
  letter-spacing: 0.02em;
  cursor: pointer;
  border: 2px solid var(--color-bg-elevated);
  box-shadow: var(--shadow-xs);
  transition: transform var(--duration-fast) var(--ease);
}
.avatar:hover { transform: scale(1.05); }

/* ============================================================
   SIDEBAR — deep Mudhamatan green
   ============================================================ */
.app-sidebar {
  grid-area: sidebar;
  position: sticky;
  top: 0;
  height: 100vh;

  display: flex;
  flex-direction: column;

  background: linear-gradient(180deg,
    var(--mudhamatan-900) 0%,
    var(--mudhamatan-950) 100%);
  color: rgba(255, 255, 255, 0.72);

  overflow: hidden;
  transition: width var(--duration-base) var(--ease);
}

.sidebar__brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  height: var(--header-h);
  padding: 0 var(--space-5);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  flex-shrink: 0;
}

.sidebar__logo {
  width: 34px; height: 34px;
  border-radius: var(--radius-sm);         /* ← rectangle, not circle */
  background: linear-gradient(135deg,
    var(--mudhamatan-400),
    var(--mudhamatan-600));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold-300);
  font-family: var(--font-arabic);
  font-weight: 700;
  font-size: 1.1rem;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(31, 122, 68, 0.4);
}

.sidebar__brand-text {
  font-size: var(--text-md);
  font-weight: var(--font-semibold);
  letter-spacing: var(--tracking-tight);
  color: #fff;
  white-space: nowrap;
}

.sidebar__nav {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-4) var(--space-3);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-section {
  margin-top: var(--space-4);
  padding: var(--space-1) var(--space-3) var(--space-2);
  font-size: 0.6875rem;                    /* 11px */
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.35);
  white-space: nowrap;
}

.nav-item { position: relative; }

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);         /* ← rectangular */
  color: rgba(255, 255, 255, 0.72);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  white-space: nowrap;
  cursor: pointer;
  width: 100%;
  text-align: left;
  transition: background-color var(--duration-fast) var(--ease),
              color var(--duration-fast) var(--ease);
}
.nav-link:hover {
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
}
.nav-link svg,
.nav-link .nav-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: currentColor;
}
.nav-link__label { flex: 1; }

.nav-link__badge {
  padding: 1px 6px;
  font-size: 0.6875rem;
  font-weight: var(--font-semibold);
  background: rgba(251, 191, 36, 0.15);
  color: var(--gold-300);
  border-radius: var(--radius-xs);
}

/* Soft "soon" badge — used for future/disabled nav items */
.nav-link__badge--soft {
  background: rgba(255, 255, 255, 0.06);
  color: rgba(255, 255, 255, 0.4);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.625rem;
  margin-left: auto;
}

/* Disabled nav items — greyed out and non-interactive */
.nav-link.is-disabled {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
}

.nav-link__chevron {
  width: 14px; height: 14px;
  transition: transform var(--duration-fast) var(--ease);
  opacity: 0.6;
}

/* Active nav item */
.nav-link.is-active {
  background: linear-gradient(90deg,
    rgba(69, 164, 102, 0.24) 0%,
    rgba(69, 164, 102, 0.04) 100%);
  color: #fff;
  font-weight: var(--font-semibold);
}
.nav-link.is-active::before {
  content: '';
  position: absolute;
  left: -12px;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 20px;
  background: var(--gold-400);
  border-radius: 0 var(--radius-xs) var(--radius-xs) 0;
}

/* ============================================================
   SUBMENU — smooth grid accordion
   ============================================================ */
.nav-item.has-submenu.is-open > .nav-link .nav-link__chevron {
  transform: rotate(90deg);
}

.submenu {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--duration-base) var(--ease);
  overflow: hidden;
  margin-left: calc(var(--space-3) + 18px + var(--space-3) - 8px);
  padding-left: var(--space-3);
  border-left: 1px solid rgba(255, 255, 255, 0.1);
}
.nav-item.has-submenu.is-open > .submenu {
  grid-template-rows: 1fr;
}

.submenu > .submenu-inner {
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 1px;
  padding-top: var(--space-1);
}

.submenu .nav-link {
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: var(--font-normal);
  color: rgba(255, 255, 255, 0.62);
}
.submenu .nav-link:hover {
  background: rgba(255, 255, 255, 0.05);
  color: #fff;
}
.submenu .nav-link.is-active {
  background: transparent;
  color: var(--gold-300);
  font-weight: var(--font-medium);
}
.submenu .nav-link.is-active::before { display: none; }
.submenu .nav-link.is-active::after {
  content: '';
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--gold-400);
  margin-left: auto;
}

/* ============================================================
   COLLAPSED SIDEBAR
   ============================================================ */
.app-shell.is-collapsed .sidebar__brand-text,
.app-shell.is-collapsed .nav-section,
.app-shell.is-collapsed .nav-link__label,
.app-shell.is-collapsed .nav-link__badge,
.app-shell.is-collapsed .nav-link__chevron,
.app-shell.is-collapsed .submenu {
  display: none;
}
.app-shell.is-collapsed .nav-link {
  justify-content: center;
  padding: var(--space-2);
}
.app-shell.is-collapsed .nav-link.is-active::before {
  left: -8px;
}

/* ============================================================
   MAIN CONTENT
   ============================================================ */
.app-main {
  grid-area: main;
  padding: var(--space-8) var(--space-6);
  min-width: 0;
}

.page-header {
  margin-bottom: var(--space-8);
  padding-bottom: var(--space-5);
  border-bottom: 1px solid var(--color-border);
}
.page-header h1 {
  font-size: var(--text-3xl);
  font-weight: var(--font-bold);
  letter-spacing: var(--tracking-tight);
  line-height: 1.2;
  margin-bottom: var(--space-2);
}
.page-header p {
  color: var(--color-text-muted);
  font-size: var(--text-md);
  max-width: 60ch;
}

/* ============================================================
   FOOTER
   ============================================================ */
.app-footer {
  grid-area: footer;
  padding: var(--space-6);
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.footer-links {
  display: flex;
  gap: var(--space-5);
}
.footer-links a {
  color: var(--color-text-muted);
  transition: color var(--duration-fast) var(--ease);
}
.footer-links a:hover { color: var(--color-primary); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .app-shell {
    grid-template-columns: 0 1fr;
  }
  .app-shell.is-mobile-open {
    grid-template-columns: var(--sidebar-w) 1fr;
  }
  .app-sidebar {
    position: fixed;
    left: 0; top: 0;
    z-index: var(--z-overlay);
    width: var(--sidebar-w);
    transform: translateX(-100%);
    transition: transform var(--duration-base) var(--ease);
    box-shadow: var(--shadow-xl);
  }
  .app-shell.is-mobile-open .app-sidebar {
    transform: translateX(0);
  }
  /* Reset collapsed overrides on mobile */
  .app-shell.is-collapsed .sidebar__brand-text,
  .app-shell.is-collapsed .nav-section,
  .app-shell.is-collapsed .nav-link__label,
  .app-shell.is-collapsed .nav-link__badge,
  .app-shell.is-collapsed .nav-link__chevron,
  .app-shell.is-collapsed .submenu { display: revert; }
  .app-shell.is-collapsed .nav-link {
    justify-content: flex-start;
    padding: var(--space-2) var(--space-3);
  }

  .sidebar-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(4, 26, 13, 0.5);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: calc(var(--z-overlay) - 1);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--duration-base) var(--ease);
  }
  .app-shell.is-mobile-open .sidebar-backdrop {
    opacity: 1;
    pointer-events: auto;
  }
}

.app-footer {
  grid-area: footer;
  padding: var(--space-6) var(--space-8);
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  flex-wrap: wrap;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.app-footer__left {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  min-width: 0;
  flex: 1 1 300px;
}

.app-footer__credit {
  font-size: var(--text-xs);
  color: var(--color-text-subtle);
}

.footer-links {
  display: flex;
  gap: var(--space-5);
  list-style: none;
  padding: 0;
  margin: 0;
  flex-wrap: wrap;
  flex-shrink: 0;
}

.footer-links a {
  color: var(--color-text-muted);
  transition: color var(--duration-fast) var(--ease);
  white-space: nowrap;
}
.footer-links a:hover {
  color: var(--color-primary);
}

@media (max-width: 640px) {
  .app-footer {
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
    padding: var(--space-5) var(--space-4);
    gap: var(--space-4);
  }

  .app-footer__left {
    flex: 0 0 auto;
  }

  .footer-links {
    justify-content: flex-start;
  }
}


@media (max-width: 640px) {
  .app-main { padding: var(--space-5) var(--space-4); }
  .app-header { padding: 0 var(--space-4); gap: var(--space-2); }
  .header-search { display: none; }
  .app-footer { flex-direction: column; text-align: center; padding: var(--space-5) var(--space-4); }
  .page-header h1 { font-size: var(--text-2xl); }
}