/* ==========================================================================
   Base Styles & Accessibility - Tickets Management System (SaaS)
   ========================================================================== */

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

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-size: 14px;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg-canvas);
  background-image: var(--bg-gradient);
  background-attachment: fixed;
  color: var(--ink);
  min-height: 100vh;
  line-height: 1.5;
  overflow-x: hidden;
}

/* Accessibility Focus States */
:focus {
  outline: none;
}

:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-color: var(--primary) !important;
}

/* Text Hierarchy */
h1, h2, h3, h4, h5, h6 {
  color: var(--ink);
  font-weight: 700;
  line-height: 1.25;
}

p {
  color: var(--muted);
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary-hover);
}

/* Bi-directional Text Helpers for Dynamic Arabic Messages */
[dir="auto"], .bidi-text {
  unicode-bidi: plaintext;
  text-align: start;
}

/* Screen Reader Only Utility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Custom Minimal Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(148, 163, 184, 0.35);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(148, 163, 184, 0.6);
}

/* Reduced Motion Preference */
@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;
  }
}

/* Toast Container (Fixed top-right) */
#toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 400px;
  width: calc(100vw - 40px);
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  background: var(--surface-card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-modal);
  color: var(--ink);
  font-size: 13px;
  line-height: 1.4;
  animation: toastSlideIn 240ms cubic-bezier(0.16, 1, 0.3, 1);
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.toast-success {
  border-left: 4px solid var(--success);
}

.toast-error {
  border-left: 4px solid var(--danger);
}

.toast-warning {
  border-left: 4px solid var(--warning);
}

.toast-info {
  border-left: 4px solid var(--primary);
}

.toast .toast-icon {
  font-size: 16px;
  flex-shrink: 0;
  margin-top: 1px;
}

.toast .toast-content {
  flex: 1;
}

.toast .toast-close {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--muted);
  font-size: 16px;
  padding: 0 4px;
  margin-top: -2px;
  border-radius: var(--radius-sm);
}

.toast .toast-close:hover {
  color: var(--ink);
}

@keyframes toastSlideIn {
  from {
    opacity: 0;
    transform: translateY(-12px) scale(0.96);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}