/* ============================================================
   MODERN.CSS — Pro UI/UX, Animations, Material Design Overrides
   ============================================================ */

/* ---------- Material Design Elevation ---------- */
:root {
  --md-elevation-1: 0 2px 4px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --md-elevation-2: 0 4px 8px rgba(0,0,0,0.08), 0 2px 4px rgba(0,0,0,0.04);
  --md-elevation-3: 0 8px 16px rgba(0,0,0,0.10), 0 4px 8px rgba(0,0,0,0.06);
  --md-elevation-4: 0 16px 32px rgba(0,0,0,0.12), 0 8px 16px rgba(0,0,0,0.08);
  --md-elevation-5: 0 24px 48px rgba(0,0,0,0.14), 0 12px 24px rgba(0,0,0,0.10);
  --md-radius-sm: 8px;
  --md-radius-md: 12px;
  --md-radius-lg: 16px;
  --md-radius-xl: 20px;
  --md-radius-xxl: 28px;
  --md-transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --md-bounce: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  --glass-bg: rgba(255,255,255,0.72);
  --glass-border: rgba(255,255,255,0.3);
  --glass-shadow: 0 8px 32px rgba(0,0,0,0.06);
  color-scheme: light;
}

/* ---------- Global Animations ---------- */
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-16px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInLeft {
  from { opacity: 0; transform: translateX(-24px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes fadeInRight {
  from { opacity: 0; transform: translateX(24px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.92); }
  to   { opacity: 1; transform: scale(1); }
}
@keyframes slideUp {
  from { opacity: 0; transform: translateY(40px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes shimmer {
  0%   { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}
@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50%      { transform: scale(1.05); }
}
@keyframes ripple {
  to { transform: scale(4); opacity: 0; }
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #f1f5f9; border-radius: 999px; }
::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 999px; }
::-webkit-scrollbar-thumb:hover { background: #94a3b8; }

/* ---------- Page Transitions ---------- */
body { animation: fadeIn 0.3s ease; }

/* ---------- Glassmorphism Cards ---------- */
.card-glass {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: var(--md-radius-lg);
  transition: all var(--md-transition);
  color: #0f172a;
}
.card-glass:hover {
  box-shadow: var(--md-elevation-3);
  transform: translateY(-2px);
}

/* ---------- Material Cards ---------- */
.card-md {
  background: #fff;
  border: none;
  border-radius: var(--md-radius-lg);
  box-shadow: var(--md-elevation-1);
  transition: all var(--md-transition);
}
.card-md:hover {
  box-shadow: var(--md-elevation-3);
  transform: translateY(-2px);
}
.card-md .card-body { padding: 1.5rem; }

/* ---------- Bootstrap 5 Button Overrides ---------- */
.btn {
  font-weight: 600;
  letter-spacing: 0.01em;
  padding: 0.6rem 1.4rem;
  border-radius: var(--md-radius-md);
  transition: all var(--md-transition);
  position: relative;
  overflow: hidden;
  text-transform: none;
}
.btn:active { transform: scale(0.97); }
.btn-lg { padding: 0.75rem 1.75rem; border-radius: var(--md-radius-lg); }
.btn-sm { padding: 0.4rem 1rem; border-radius: var(--md-radius-sm); }

/* Ripple */
.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle, rgba(255,255,255,0.3) 10%, transparent 10%);
  background-position: center;
  background-repeat: no-repeat;
  background-size: 0%;
  transition: background-size 0s;
  pointer-events: none;
}
.btn:active::after {
  background-size: 1000%;
  transition: background-size 0.4s;
}

/* Primary */
.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  border: none;
  box-shadow: 0 4px 12px rgba(var(--primary-color), 0.3);
}
.btn-primary:hover {
  box-shadow: 0 6px 20px rgba(var(--primary-color), 0.4);
  transform: translateY(-1px);
}

/* Outline */
.btn-outline-primary {
  border: 2px solid var(--primary-color);
  color: var(--primary-color);
}
.btn-outline-primary:hover {
  background: var(--primary-color);
  border-color: var(--primary-color);
  color: #fff;
}

/* Success / Danger / Warning / Info — same pattern */
.btn-success {
  background: linear-gradient(135deg, #22c55e, #16a34a);
  border: none;
  box-shadow: 0 4px 12px rgba(34,197,94,0.3);
}
.btn-danger {
  background: linear-gradient(135deg, #ef4444, #dc2626);
  border: none;
  box-shadow: 0 4px 12px rgba(239,68,68,0.3);
}
.btn-warning {
  background: linear-gradient(135deg, #f59e0b, #d97706);
  border: none;
  color: #fff;
  box-shadow: 0 4px 12px rgba(245,158,11,0.3);
}
.btn-info {
  background: linear-gradient(135deg, #3b82f6, #2563eb);
  border: none;
  color: #fff;
  box-shadow: 0 4px 12px rgba(59,130,246,0.3);
}
.btn-dark {
  background: linear-gradient(135deg, #1e293b, #0f172a);
  border: none;
}
.btn-light {
  background: linear-gradient(135deg, #f8fafc, #f1f5f9);
  border: 1px solid #e2e8f0;
  color: #1e293b;
}

/* ---------- Material Form Controls ---------- */
.form-control, .form-select {
  border-radius: var(--md-radius-md);
  padding: 0.65rem 1rem;
  border: 2px solid #e2e8f0;
  transition: all var(--md-transition);
  font-size: 0.95rem;
}
.form-control:focus, .form-select:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 4px rgba(var(--primary-color), 0.1);
  outline: none;
}
.form-control-sm { padding: 0.4rem 0.75rem; font-size: 0.85rem; }
.form-control-lg { padding: 0.8rem 1.2rem; font-size: 1.05rem; }

/* Floating label wrapper */
.floating-label {
  position: relative;
}
.floating-label .form-control:placeholder-shown + label,
.floating-label .form-select:placeholder-shown + label {
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.95rem;
  color: #94a3b8;
  pointer-events: none;
  position: absolute;
  left: 1rem;
  transition: all var(--md-transition);
  background: transparent;
  padding: 0 4px;
}
.floating-label .form-control:not(:placeholder-shown) + label,
.floating-label .form-control:focus + label,
.floating-label .form-select:not(:placeholder-shown) + label,
.floating-label .form-select:focus + label {
  top: -0.5rem;
  font-size: 0.75rem;
  color: var(--primary-color);
  background: #fff;
}

/* ---------- Badges Modern ---------- */
.badge {
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 0.35em 0.75em;
  border-radius: 999px;
  font-size: 0.75rem;
}

/* ---------- Tables Modern ---------- */
.table {
  border-radius: var(--md-radius-lg);
  overflow: hidden;
  box-shadow: var(--md-elevation-1);
}
.table thead th {
  background: #f8fafc;
  border-bottom: 2px solid #e2e8f0;
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  padding: 1rem;
  color: #64748b;
}
.table tbody td {
  padding: 1rem;
  vertical-align: middle;
  border-bottom: 1px solid #f1f5f9;
}
.table tbody tr:hover {
  background: #f8fafc;
}

/* ---------- Alert Modern ---------- */
.alert {
  border: none;
  border-radius: var(--md-radius-lg);
  padding: 1rem 1.25rem;
  box-shadow: var(--md-elevation-1);
}
.alert-success { background: linear-gradient(135deg, #f0fdf4, #dcfce7); color: #166534; }
.alert-danger  { background: linear-gradient(135deg, #fef2f2, #fee2e2); color: #991b1b; }
.alert-warning { background: linear-gradient(135deg, #fffbeb, #fef3c7); color: #92400e; }
.alert-info    { background: linear-gradient(135deg, #eff6ff, #dbeafe); color: #1e40af; }

/* ---------- List Group Modern ---------- */
.list-group-item {
  border: 1px solid #f1f5f9;
  padding: 1rem 1.25rem;
  transition: all var(--md-transition);
}
.list-group-item:hover {
  background: #f8fafc;
  border-color: #e2e8f0;
}

/* ---------- Nav / Tabs Modern ---------- */
.nav-tabs .nav-link {
  border: none;
  color: #64748b;
  font-weight: 600;
  padding: 0.75rem 1.25rem;
  border-radius: var(--md-radius-md) var(--md-radius-md) 0 0;
  transition: all var(--md-transition);
}
.nav-tabs .nav-link:hover {
  color: var(--primary-color);
  background: rgba(var(--primary-color), 0.04);
}
.nav-tabs .nav-link.active {
  color: var(--primary-color);
  background: transparent;
  box-shadow: inset 0 -3px 0 var(--primary-color);
}

/* ---------- Modal Modern ---------- */
.modal-content {
  border: none;
  border-radius: var(--md-radius-xl);
  box-shadow: var(--md-elevation-5);
}
.modal-header {
  border-bottom: 1px solid #f1f5f9;
  padding: 1.25rem 1.5rem;
}
.modal-body { padding: 1.5rem; }
.modal-footer {
  border-top: 1px solid #f1f5f9;
  padding: 1rem 1.5rem;
}

/* ---------- Dropdown Modern ---------- */
.dropdown-menu {
  border: none;
  border-radius: var(--md-radius-lg);
  box-shadow: var(--md-elevation-4);
  padding: 0.5rem;
}
.dropdown-item {
  border-radius: var(--md-radius-sm);
  padding: 0.5rem 1rem;
  font-weight: 500;
  transition: all var(--md-transition);
}
.dropdown-item:hover {
  background: #f1f5f9;
}
.dropdown-item:active {
  background: var(--primary-color);
  color: #fff;
}

/* ---------- Progress Bar ---------- */
.progress {
  height: 8px;
  border-radius: 999px;
  background: #f1f5f9;
  overflow: hidden;
}
.progress-bar {
  border-radius: 999px;
  background: linear-gradient(90deg, var(--primary-color), var(--primary-dark));
  transition: width 0.6s ease;
}

/* ---------- Skeleton Loading ---------- */
.skeleton {
  background: linear-gradient(90deg, #f1f5f9 25%, #e2e8f0 50%, #f1f5f9 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--md-radius-sm);
}
.skeleton-text { height: 1rem; margin-bottom: 0.5rem; }
.skeleton-title { height: 1.5rem; width: 60%; margin-bottom: 1rem; }
.skeleton-avatar { width: 48px; height: 48px; border-radius: 50%; }
.skeleton-thumb { width: 100%; height: 120px; border-radius: var(--md-radius-md); }

/* ---------- Animations on scroll (applied via JS) ---------- */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Stagger children ---------- */
.stagger-children > * {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.stagger-children.visible > *:nth-child(1) { transition-delay: 0.05s; }
.stagger-children.visible > *:nth-child(2) { transition-delay: 0.10s; }
.stagger-children.visible > *:nth-child(3) { transition-delay: 0.15s; }
.stagger-children.visible > *:nth-child(4) { transition-delay: 0.20s; }
.stagger-children.visible > *:nth-child(5) { transition-delay: 0.25s; }
.stagger-children.visible > *:nth-child(6) { transition-delay: 0.30s; }
.stagger-children.visible > * { opacity: 1; transform: translateY(0); }

/* Never hide content for users who prefer reduced motion or when
   animations cannot run — content must always remain readable. */
@media (prefers-reduced-motion: reduce) {
  .animate-on-scroll,
  .stagger-children > * {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ---------- Hover lift ---------- */
.hover-lift {
  transition: transform var(--md-transition), box-shadow var(--md-transition);
}
.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: var(--md-elevation-3);
}

/* ---------- Image hover zoom ---------- */
.img-zoom {
  overflow: hidden;
  border-radius: var(--md-radius-md);
}
.img-zoom img {
  transition: transform 0.4s ease;
}
.img-zoom:hover img {
  transform: scale(1.06);
}

/* ---------- Gradient text ---------- */
.text-gradient {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---------- Section spacing ---------- */
.section-padding { padding: 4rem 0; }
.section-padding-sm { padding: 2.5rem 0; }

/* ---------- Mobile Responsive ---------- */
@media (max-width: 767.98px) {
  .section-padding { padding: 2.5rem 0; }
  /* Solid cards on mobile: translucent + backdrop-filter is mangled by
     phone dark-mode heuristics and is slow on mobile GPUs. */
  .card-glass {
    background: #ffffff;
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
    color: #0f172a;
  }
  .btn { padding: 0.5rem 1.1rem; font-size: 0.9rem; }
  .btn-lg { padding: 0.65rem 1.4rem; }
  .table thead { display: none; }
  .table tbody td {
    display: block;
    padding: 0.75rem 1rem;
    border: none;
    text-align: right;
    position: relative;
    padding-left: 50%;
  }
  .table tbody td::before {
    content: attr(data-label);
    position: absolute;
    left: 1rem;
    font-weight: 600;
    text-align: left;
    color: #64748b;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
  }
  .table tbody tr {
    display: block;
    margin-bottom: 1rem;
    border: 1px solid #e2e8f0;
    border-radius: var(--md-radius-lg);
    padding: 0.5rem 0;
  }
  .modal-dialog { margin: 0.5rem; }
  .dropdown-menu { min-width: auto; }
}

@media (max-width: 575.98px) {
  .container { padding-left: 1rem; padding-right: 1rem; }
  h1 { font-size: 1.75rem; }
  h2 { font-size: 1.4rem; }
  h3 { font-size: 1.2rem; }
}