/* ============================================================
   HSA Notes — Layout (shell, sidebar, header, login, splash)
   ============================================================ */

/* ---------- Splash screen ---------- */
.splash {
  position: fixed;
  inset: 0;
  z-index: var(--z-splash);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 24px;
  background: var(--color-background);
  transition: opacity var(--transition-slow) ease, visibility var(--transition-slow) ease;
}
.splash.hide {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}
.splash-logo {
  width: 96px;
  height: 96px;
  animation: pulse 1.8s ease-in-out infinite;
}
.splash-title {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--color-primary);
}
.splash-sub {
  font-size: 13px;
  color: var(--color-text-secondary);
}
.splash-bar {
  width: 180px;
  height: 4px;
  border-radius: var(--radius-full);
  background: var(--color-border);
  overflow: hidden;
}
.splash-bar > span {
  display: block;
  height: 100%;
  width: 40%;
  border-radius: var(--radius-full);
  background: var(--color-gold);
  animation: slideLoad 1.2s ease-in-out infinite;
}
@keyframes slideLoad {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(350%); }
}

/* ---------- Login screen ---------- */
.auth-screen {
  position: fixed;
  inset: 0;
  z-index: 900;
  display: none;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(1100px 600px at 15% -10%, rgba(46, 58, 89, 0.10), transparent 60%),
    radial-gradient(900px 500px at 110% 110%, rgba(201, 168, 118, 0.12), transparent 60%),
    var(--color-background);
  padding: 24px;
  overflow-y: auto;
}
.auth-screen.visible { display: flex; }

.auth-card {
  width: 100%;
  max-width: 430px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 40px 36px;
  animation: scaleIn var(--transition-med) ease;
}
.auth-lang-btn {
  position: fixed;
  top: calc(18px + env(safe-area-inset-top));
  inset-inline-end: 18px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  padding: 0 14px;
  width: auto;
  height: 42px;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-text-primary);
}
.auth-lang-btn:hover { background: var(--color-surface-alt); }
.auth-logo-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  margin-bottom: 28px;
}
.auth-logo {
  width: 76px;
  height: 76px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}
.auth-logo-title {
  font-size: 24px;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: 0.01em;
}
.auth-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-accent-strong);
  background: rgba(169, 197, 160, 0.14);
  border-radius: var(--radius-full);
  padding: 6px 14px;
  margin-top: 18px;
}
.auth-divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 22px 0 16px;
  color: var(--color-text-secondary);
  font-size: 12px;
}
.auth-divider::before,
.auth-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-border);
}
.auth-restore-row {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.auth-restore-hint {
  font-size: 12.5px;
  color: var(--color-text-secondary);
  text-align: center;
  line-height: 1.8;
}
.auth-heading {
  font-size: 20px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 8px;
}
.auth-subtitle {
  font-size: 13.5px;
  color: var(--color-text-secondary);
  text-align: center;
  margin-bottom: 26px;
  line-height: 1.7;
}
.auth-form { display: flex; flex-direction: column; gap: 16px; }
.auth-error {
  display: none;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--color-danger);
  background: rgba(192, 96, 92, 0.1);
  border: 1px solid rgba(192, 96, 92, 0.3);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
}
.auth-error.visible { display: flex; }
.auth-info {
  font-size: 12.5px;
  color: var(--color-text-secondary);
  text-align: center;
  margin-top: 16px;
}
.auth-lock-timer {
  font-size: 13px;
  color: var(--color-warning);
  text-align: center;
  font-weight: 700;
}

/* ---------- App shell ---------- */
.app-shell {
  display: none;
  min-height: 100vh;
  min-height: 100dvh;
}
.app-shell.visible { display: block; }

.sidebar {
  position: fixed;
  top: 0;
  bottom: 0;
  inset-inline-start: 0;
  width: var(--sidebar-width);
  z-index: var(--z-sidebar);
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border-inline-end: 1px solid var(--color-border);
  transition: transform var(--transition-med) ease;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 20px;
  padding-top: calc(18px + env(safe-area-inset-top));
  border-bottom: 1px solid var(--color-border);
}
.sidebar-brand img {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
}
.sidebar-brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}
.sidebar-brand-name {
  font-size: 17px;
  font-weight: 800;
  color: var(--color-primary);
}
.sidebar-brand-tag {
  font-size: 11px;
  color: var(--color-text-secondary);
}

.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: 14px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.nav-group-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  padding: 12px 12px 6px;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 12px;
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  font-weight: 600;
  font-size: 14px;
  transition: background var(--transition-fast), color var(--transition-fast);
  cursor: pointer;
  border: none;
  background: none;
  text-align: start;
  width: 100%;
}
.nav-item .icon { transition: transform var(--transition-fast); }
.nav-item:hover { background: var(--color-surface-alt); color: var(--color-text-primary); }
.nav-item.active {
  background: var(--color-primary);
  color: #fff;
  box-shadow: var(--shadow-sm);
}
.nav-item.active:hover { color: #fff; }
.nav-item-badge {
  margin-inline-start: auto;
  font-size: 11px;
  font-weight: 700;
  background: var(--color-gold);
  color: var(--color-primary-strong);
  border-radius: var(--radius-full);
  padding: 1px 9px;
}
.nav-item.active .nav-item-badge { background: #fff; color: var(--color-primary); }

.sidebar-footer {
  padding: 14px;
  padding-bottom: calc(14px + env(safe-area-inset-bottom));
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.sidebar-user {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  font-size: 13px;
  color: var(--color-text-secondary);
}
.sidebar-version { font-size: 11px; color: var(--color-text-secondary); text-align: center; padding-top: 4px; }

/* ---------- Main ---------- */
.main {
  margin-inline-start: var(--sidebar-width);
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}
.main-topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 10px;
  height: calc(var(--header-height) + env(safe-area-inset-top));
  padding: 0 24px;
  padding-top: env(safe-area-inset-top);
  background: color-mix(in srgb, var(--color-surface) 82%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}
.topbar-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-text-primary);
}
.topbar-spacer { flex: 1; }
.topbar-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}
.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  min-width: 44px;
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  background: transparent;
  border: 1px solid transparent;
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}
.icon-btn:hover {
  background: var(--color-surface-alt);
  color: var(--color-text-primary);
  border-color: var(--color-border);
}
.icon-btn.lang-btn {
  gap: 8px;
  width: auto;
  padding: 0 14px;
  font-size: 13px;
  font-weight: 700;
}
.icon-btn.logout-btn { color: var(--color-danger); }
.icon-btn.logout-btn:hover { background: rgba(192, 96, 92, 0.1); border-color: rgba(192, 96, 92, 0.3); }

.menu-btn { display: none; }

.content {
  flex: 1;
  padding: 28px 32px 48px;
  max-width: 1280px;
  width: 100%;
  margin: 0 auto;
}
.page { display: none; animation: fadeIn var(--transition-med) ease; }
.page.active { display: block; }

.page-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.page-title {
  font-size: 26px;
  font-weight: 800;
}
.page-subtitle {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-top: 4px;
}
.page-actions { display: flex; gap: 10px; flex-wrap: wrap; }

/* ---------- Sidebar backdrop (mobile) ---------- */
.sidebar-backdrop {
  position: fixed;
  inset: 0;
  background: var(--color-overlay);
  z-index: 850;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-med) ease, visibility var(--transition-med) ease;
}
.sidebar-backdrop.visible { opacity: 1; visibility: visible; }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .sidebar { transform: translateX(calc(var(--sidebar-width) * -1)); }
  [dir="rtl"] .sidebar { transform: translateX(var(--sidebar-width)); }
  .sidebar.open { transform: translateX(0); }
  .main { margin-inline-start: 0; }
  .menu-btn { display: inline-flex; }
  .content { padding: 20px 16px calc(40px + env(safe-area-inset-bottom)); }
  .page-title { font-size: 22px; }
}
@media (max-width: 560px) {
  .auth-card { padding: 28px 20px; }
  .topbar-title { font-size: 15px; }
  .icon-btn.lang-btn { padding: 0 10px; font-size: 12px; }
}