/* ══════════════════════════════════════════════════════════════════════════
   AODA / WCAG 2.1 AA Compliance & UX Enhancement Layer
   ══════════════════════════════════════════════════════════════════════════ */

/* ── Skip Navigation ────────────────────────────────────────────────────── */
.skip-link {
  position: absolute;
  top: -100%;
  left: 16px;
  z-index: 10000;
  background: var(--accent);
  color: #0b1120;
  padding: 12px 24px;
  border-radius: 0 0 var(--radius) var(--radius);
  font-weight: 700;
  font-size: 14px;
  text-decoration: none;
  transition: top 0.2s ease;
  box-shadow: 0 4px 16px rgba(0,0,0,0.3);
}
.skip-link:focus {
  top: 0;
  outline: 3px solid #fff;
  outline-offset: 2px;
}

/* ── Focus Indicators (WCAG 2.4.7) ─────────────────────────────────────── */
:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Remove outline only for mouse users */
:focus:not(:focus-visible) {
  outline: none;
}

/* Ensure all interactive elements have visible focus */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
  box-shadow: 0 0 0 6px rgba(34, 211, 238, 0.15);
}

/* Sidebar links focus */
.sidebar-link:focus-visible {
  outline-offset: -2px;
  box-shadow: inset 0 0 0 2px var(--accent);
}

/* ── Reduced Motion (WCAG 2.3.3) ───────────────────────────────────────── */
@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;
  }
}

/* ── Color Contrast Fixes (WCAG 1.4.3 — 4.5:1 minimum) ────────────────── */
/* Original --text-3: #506882 has ~3.6:1 on #0b1120 - bump to 4.5:1+ */
:root {
  --text-3-accessible: #7a93ad;
  --text-2-accessible: #a3b8cc;
  --border-focus: var(--accent);
}

/* Apply accessible colors to low-contrast elements */
.sidebar-label,
.stat-label,
.form-hint,
.dash-card-label,
.dash-card-sub,
.footer-bottom p,
.trust-item,
.deadline-label,
.price-name,
.price-form,
.pricing-note {
  color: var(--text-3-accessible);
}

/* ── Semantic Structure Enhancements ────────────────────────────────────── */
/* Live regions for dynamic updates */
[role="status"],
[role="alert"],
[aria-live] {
  position: relative;
}

/* Visually hidden but accessible to screen readers (WCAG) */
.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;
}

/* ── Better Touch Targets (WCAG 2.5.5 — 44x44px minimum) ──────────────── */
.sidebar-link {
  min-height: 44px;
  display: flex;
  align-items: center;
}

.btn-primary,
.btn-outline,
.btn-ghost,
.btn-primary-sm {
  min-height: 44px;
  min-width: 44px;
}

/* Notification bell - larger hit area */
#notifBell {
  min-width: 44px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* ── Improved Sidebar Navigation ────────────────────────────────────────── */
.sidebar {
  scrollbar-width: thin;
  scrollbar-color: var(--border-lg) transparent;
}

.sidebar::-webkit-scrollbar {
  width: 6px;
}
.sidebar::-webkit-scrollbar-thumb {
  background: var(--border-lg);
  border-radius: 3px;
}

/* Active indicator - left border accent */
.sidebar-link.active {
  position: relative;
  background: var(--accent-dim);
  color: var(--accent);
  font-weight: 600;
}
.sidebar-link.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 3px;
  background: var(--accent);
  border-radius: 0 3px 3px 0;
}

/* ── Sidebar section dividers ─────────────────────────────────────────── */
.sidebar-section {
  position: relative;
  padding-bottom: 12px;
}
.sidebar-section::after {
  content: '';
  position: absolute;
  bottom: 6px;
  left: 24px;
  right: 24px;
  height: 1px;
  background: var(--border);
  opacity: 0.6;
}
.sidebar-section:last-child::after {
  display: none;
}

/* ── Quick Action Bar ───────────────────────────────────────────────────── */
.quick-actions {
  display: flex;
  gap: 12px;
  padding: 16px 24px;
  margin-bottom: 24px;
  background: var(--bg-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  flex-wrap: wrap;
}
.quick-action-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: var(--accent-dim);
  border: 1px solid rgba(34,211,238,0.2);
  border-radius: 50px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}
.quick-action-btn:hover {
  background: rgba(34,211,238,0.15);
  border-color: var(--accent);
  transform: translateY(-1px);
}
.quick-action-btn.primary {
  background: var(--accent);
  color: #0b1120;
  border-color: var(--accent);
}
.quick-action-btn.primary:hover {
  background: #67e8f9;
}

/* ── Breadcrumb Navigation ──────────────────────────────────────────────── */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  font-size: 13px;
  color: var(--text-3-accessible);
}
.breadcrumb a {
  color: var(--text-2-accessible);
  text-decoration: none;
  transition: color 0.15s;
}
.breadcrumb a:hover {
  color: var(--accent);
}
.breadcrumb-separator {
  color: var(--text-3-accessible);
  font-size: 10px;
}
.breadcrumb-current {
  color: var(--text);
  font-weight: 500;
}

/* ── Improved Cards ─────────────────────────────────────────────────────── */
.dash-cards {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.dash-card {
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.dash-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--accent);
  opacity: 0;
  transition: opacity 0.2s;
}
.dash-card:hover::before {
  opacity: 0.5;
}

/* ── Status indicators with better contrast ─────────────────────────────── */
.status-pill {
  font-weight: 700;
  letter-spacing: 0.02em;
}
.status-accepted {
  background: rgba(34,211,238,0.15);
  color: #5eead4;
}
.status-pending {
  background: rgba(251,191,36,0.15);
  color: #fcd34d;
}
.status-rejected {
  background: rgba(248,113,113,0.12);
  color: #fca5a5;
}

/* ── Error & Form Validation (WCAG 3.3) ─────────────────────────────────── */
.form-input[aria-invalid="true"],
.form-select[aria-invalid="true"] {
  border-color: var(--danger);
  box-shadow: 0 0 0 3px rgba(248, 113, 113, 0.15);
}

.form-error-msg {
  color: var(--danger);
  font-size: 13px;
  margin-top: 6px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.form-error-msg::before {
  content: '⚠';
  font-size: 14px;
}

/* ── Toast / Notifications with role=alert ──────────────────────────────── */
.toast-container {
  position: fixed;
  top: 80px;
  right: 24px;
  z-index: 10000;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}
.toast-msg {
  background: var(--bg-1);
  border: 1px solid var(--border-lg);
  border-radius: var(--radius);
  padding: 14px 20px;
  font-size: 14px;
  color: var(--text);
  box-shadow: var(--shadow-lg);
  transform: translateX(120%);
  transition: transform 0.3s ease;
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: 380px;
}
.toast-msg.show {
  transform: translateX(0);
}
.toast-msg.success {
  border-left: 4px solid var(--accent);
}
.toast-msg.error {
  border-left: 4px solid var(--danger);
}
.toast-msg.warning {
  border-left: 4px solid var(--warn);
}

/* ── Empty States (better guidance) ─────────────────────────────────────── */
.empty-state-card {
  text-align: center;
  padding: 60px 40px;
  color: var(--text-2-accessible);
}
.empty-state-icon {
  font-size: 48px;
  margin-bottom: 16px;
  opacity: 0.6;
}
.empty-state-title {
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}
.empty-state-desc {
  font-size: 14px;
  color: var(--text-2-accessible);
  max-width: 360px;
  margin: 0 auto 20px;
  line-height: 1.6;
}

/* ── Keyboard Navigation Indicator ──────────────────────────────────────── */
.keyboard-user .sidebar-link:focus {
  background: var(--bg-3);
}

/* ── High Contrast Mode Support ─────────────────────────────────────────── */
@media (forced-colors: active) {
  .sidebar-link.active {
    border: 2px solid ButtonText;
  }
  .btn-primary {
    border: 2px solid ButtonText;
  }
  .status-pill {
    border: 1px solid;
  }
}

/* ── Print Styles (WCAG guideline for alt formats) ──────────────────────── */
@media print {
  .sidebar, .nav, .sidebar-toggle-btn, .quick-actions {
    display: none !important;
  }
  .dash-content {
    margin-left: 0 !important;
  }
  body {
    background: #fff;
    color: #000;
  }
}

/* ── Tooltip with keyboard access ───────────────────────────────────────── */
[data-tooltip] {
  position: relative;
}
[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-3);
  color: var(--text);
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 12px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s;
  z-index: 100;
}
[data-tooltip]:hover::after,
[data-tooltip]:focus::after {
  opacity: 1;
}

/* ── Improved Mobile Navigation ─────────────────────────────────────────── */
@media (max-width: 900px) {
  .sidebar {
    width: 280px;
    padding-top: 16px;
  }
  
  /* Legacy mobile action bar (kept for backward compat) */
  .mobile-action-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(11,17,32,0.96);
    backdrop-filter: blur(20px);
    border-top: 1px solid var(--border);
    padding: 6px 12px calc(6px + env(safe-area-inset-bottom));
    display: none;
    justify-content: space-around;
    z-index: 100;
    gap: 4px;
  }
  .mobile-action-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
    padding: 6px 10px;
    background: none;
    border: none;
    color: var(--text-3);
    font-size: 9px;
    font-weight: 600;
    cursor: pointer;
    border-radius: 8px;
    transition: var(--transition);
    min-width: 56px;
  }
  .mobile-action-btn:hover,
  .mobile-action-btn.active {
    color: var(--accent);
  }
  .mobile-action-btn .mobile-icon {
    font-size: 18px;
    line-height: 1;
  }
  
  .dash-content {
    padding-bottom: 80px;
  }
}

@media (min-width: 901px) {
  .mobile-action-bar {
    display: none !important;
  }
}