/* ============================================
   AIML IGNITE 2026 — Reusable Components
   ============================================ */

/* ============================================
   1. NAVBAR
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--navbar-height);
  z-index: var(--z-fixed);
  display: flex;
  align-items: center;
  transition: background var(--transition-base), box-shadow var(--transition-base), height var(--transition-base);
  padding: 0 var(--space-6);
}
.navbar.scrolled {
  background: rgba(6, 6, 15, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
  border-bottom: 1px solid var(--glass-border);
}
.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
}
.navbar-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: var(--text-xl);
  color: var(--text-primary);
  text-decoration: none;
}
.navbar-logo .logo-icon,
.navbar-logo .logo-img {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-lg);
  object-fit: cover;
}
.navbar-logo .logo-icon {
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-lg);
  font-weight: 900;
  color: white;
}
.navbar-logo span.accent {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}
.nav-links a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  position: relative;
  transition: color var(--transition-fast);
  padding: var(--space-2) 0;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  transition: width var(--transition-base);
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
}
.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: var(--space-2);
  z-index: var(--z-fixed);
}
.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}
.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: rgba(12, 12, 29, 0.98);
    backdrop-filter: blur(24px);
    flex-direction: column;
    align-items: flex-start;
    padding: calc(var(--navbar-height) + var(--space-8)) var(--space-8) var(--space-8);
    gap: var(--space-6);
    transition: right var(--transition-slow);
    border-left: 1px solid var(--glass-border);
    z-index: var(--z-fixed);
  }
  .nav-links.open {
    right: 0;
  }
  .nav-links a { font-size: var(--text-lg); }
  .nav-actions { display: none; }
  .nav-actions-mobile {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    width: 100%;
    margin-top: auto;
    padding-top: var(--space-6);
    border-top: 1px solid var(--glass-border);
  }
  .nav-links .nav-actions-mobile { display: flex; }
}

/* Mobile overlay */
.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: calc(var(--z-fixed) - 1);
}
.nav-overlay.active { display: block; }

/* ============================================
   2. BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--radius-lg);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
  line-height: 1.5;
}
.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* Ripple effect */
.btn .ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  animation: ripple 0.6s linear;
  pointer-events: none;
}

/* Primary */
.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 4px 20px rgba(102, 126, 234, 0.3), 0 0 0 1.5px rgba(255, 255, 255, 0.1) inset;
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(102, 126, 234, 0.5), 0 0 15px rgba(167, 139, 250, 0.4), 0 0 0 1.5px rgba(255, 255, 255, 0.25) inset;
}
.btn-primary:active {
  transform: translateY(-1px);
}

/* Secondary */
.btn-secondary {
  background: var(--glass-bg);
  color: var(--text-primary);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(8px);
}
.btn-secondary:hover {
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-hover);
  transform: translateY(-2px);
}

/* Outline */
.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
}
.btn-outline:hover {
  background: rgba(129, 140, 248, 0.1);
  transform: translateY(-2px);
}

/* Ghost */
.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
}
.btn-ghost:hover {
  background: var(--glass-bg);
  color: var(--text-primary);
}

/* Danger */
.btn-danger {
  background: var(--gradient-danger);
  color: white;
}
.btn-danger:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(239, 68, 68, 0.4);
}

/* Success */
.btn-success {
  background: var(--gradient-success);
  color: white;
}
.btn-success:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(16, 185, 129, 0.4);
}

/* Sizes */
.btn-sm { padding: var(--space-2) var(--space-4); font-size: var(--text-xs); }
.btn-lg { padding: var(--space-4) var(--space-8); font-size: var(--text-base); }
.btn-xl { padding: var(--space-5) var(--space-10); font-size: var(--text-lg); }
.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: var(--radius-lg);
}
.btn-icon.sm { width: 32px; height: 32px; }

/* ============================================
   3. CARDS
   ============================================ */
.card {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: var(--border-width) solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  transition: all var(--transition-base);
}
.card:hover {
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.card-gradient {
  position: relative;
  overflow: hidden;
}
.card-gradient::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
}

.card-title {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 700;
}

.card-body {
  color: var(--text-secondary);
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--glass-border);
}

/* Stat Card */
.stat-card {
  text-align: center;
  padding: var(--space-8);
}
.stat-card .stat-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-xl);
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-4);
  font-size: var(--text-2xl);
}
.stat-card .stat-number {
  font-family: var(--font-heading);
  font-size: var(--text-4xl);
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-card .stat-label {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-top: var(--space-2);
}

/* ============================================
   4. FORMS
   ============================================ */
.form-group {
  margin-bottom: var(--space-5);
}
.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
}
.form-label .required {
  color: var(--color-danger);
  margin-left: 2px;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  outline: none;
  transition: all var(--transition-fast);
}
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(129, 140, 248, 0.15);
  background: rgba(255, 255, 255, 0.08);
}
.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-muted);
}
.form-input.error,
.form-select.error,
.form-textarea.error {
  border-color: var(--color-danger);
  box-shadow: 0 0 0 3px rgba(248, 113, 113, 0.15);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 40px;
}
.form-select option {
  background: var(--color-surface);
  color: var(--text-primary);
}

.form-hint {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  margin-top: var(--space-1);
}
.form-error {
  font-size: var(--text-xs);
  color: var(--color-danger);
  margin-top: var(--space-1);
  display: none;
}
.form-error.visible { display: block; }

/* Checkbox & Radio */
.form-check {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  cursor: pointer;
}
.form-check input[type="checkbox"],
.form-check input[type="radio"] {
  width: 18px;
  height: 18px;
  accent-color: var(--color-primary);
  cursor: pointer;
}
.form-check label {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  cursor: pointer;
}

/* File Upload */
.file-upload {
  border: 2px dashed var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-base);
}
.file-upload:hover {
  border-color: var(--color-primary);
  background: rgba(129, 140, 248, 0.05);
}
.file-upload.dragover {
  border-color: var(--color-primary);
  background: rgba(129, 140, 248, 0.1);
}
.file-upload .upload-icon {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-3);
  color: var(--text-tertiary);
}
.file-upload .upload-text {
  font-size: var(--text-sm);
  color: var(--text-secondary);
}
.file-upload .upload-hint {
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-top: var(--space-2);
}

/* Password strength */
.password-strength {
  display: flex;
  gap: var(--space-1);
  margin-top: var(--space-2);
}
.password-strength .bar {
  flex: 1;
  height: 4px;
  border-radius: var(--radius-full);
  background: var(--glass-border);
  transition: background var(--transition-fast);
}
.password-strength.weak .bar:nth-child(1) { background: var(--color-danger); }
.password-strength.medium .bar:nth-child(1),
.password-strength.medium .bar:nth-child(2) { background: var(--color-warning); }
.password-strength.strong .bar:nth-child(1),
.password-strength.strong .bar:nth-child(2),
.password-strength.strong .bar:nth-child(3) { background: var(--color-success); }
.password-strength.very-strong .bar { background: var(--color-success); }

/* ============================================
   5. MODAL
   ============================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  z-index: var(--z-modal-backdrop);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}
.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}
.modal {
  background: var(--color-surface);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-2xl);
  width: 100%;
  max-width: 560px;
  max-height: 90vh;
  overflow-y: auto;
  transform: scale(0.95) translateY(20px);
  transition: transform var(--transition-base);
}
.modal-overlay.active .modal {
  transform: scale(1) translateY(0);
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-6);
  border-bottom: 1px solid var(--glass-border);
}
.modal-header h3 {
  font-size: var(--text-xl);
}
.modal-close {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
  border: none;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: var(--text-xl);
  transition: all var(--transition-fast);
}
.modal-close:hover {
  background: var(--glass-bg-hover);
  color: var(--text-primary);
}
.modal-body { padding: var(--space-6); }
.modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
  padding: var(--space-6);
  border-top: 1px solid var(--glass-border);
}

/* ============================================
   6. TOAST NOTIFICATIONS
   ============================================ */
.toast-container {
  position: fixed;
  top: calc(var(--navbar-height) + var(--space-4));
  right: var(--space-4);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  max-width: 400px;
}
.toast {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  animation: fadeInRight 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  position: relative;
  overflow: hidden;
}
.toast::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
}
.toast.success::before { background: var(--color-success); }
.toast.error::before   { background: var(--color-danger); }
.toast.warning::before { background: var(--color-warning); }
.toast.info::before    { background: var(--color-info); }

.toast-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-sm);
}
.toast.success .toast-icon { background: rgba(52, 211, 153, 0.2); color: var(--color-success); }
.toast.error .toast-icon   { background: rgba(248, 113, 113, 0.2); color: var(--color-danger); }
.toast.warning .toast-icon { background: rgba(251, 191, 36, 0.2); color: var(--color-warning); }
.toast.info .toast-icon    { background: rgba(56, 189, 248, 0.2); color: var(--color-info); }

.toast-content { flex: 1; }
.toast-title {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-primary);
}
.toast-message {
  font-size: var(--text-xs);
  color: var(--text-secondary);
  margin-top: 2px;
}
.toast-dismiss {
  flex-shrink: 0;
  background: none;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  font-size: var(--text-lg);
  padding: 0;
  line-height: 1;
}
.toast-dismiss:hover { color: var(--text-primary); }

.toast-progress {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 3px;
  border-radius: 0 0 0 var(--radius-xl);
  animation: toastProgress linear forwards;
}
.toast.success .toast-progress { background: var(--color-success); }
.toast.error .toast-progress   { background: var(--color-danger); }
.toast.warning .toast-progress { background: var(--color-warning); }
.toast.info .toast-progress    { background: var(--color-info); }

@keyframes toastProgress {
  from { width: 100%; }
  to   { width: 0%; }
}

/* ============================================
   7. DATA TABLES
   ============================================ */
.table-container {
  overflow-x: auto;
  border-radius: var(--radius-xl);
  border: 1px solid var(--glass-border);
}
.data-table {
  width: 100%;
  border-collapse: collapse;
}
.data-table th,
.data-table td {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  border-bottom: 1px solid var(--glass-border);
  font-size: var(--text-sm);
  white-space: nowrap;
}
.data-table th {
  background: rgba(255, 255, 255, 0.03);
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  font-size: var(--text-xs);
  letter-spacing: 0.05em;
}
.data-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}
.data-table tr:last-child td {
  border-bottom: none;
}

/* ============================================
   8. BADGES & STATUS INDICATORS
   ============================================ */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
  white-space: nowrap;
}
.badge-primary  { background: rgba(129, 140, 248, 0.15); color: var(--color-primary); }
.badge-success  { background: rgba(52, 211, 153, 0.15); color: var(--color-success); }
.badge-warning  { background: rgba(251, 191, 36, 0.15); color: var(--color-warning); }
.badge-danger   { background: rgba(248, 113, 113, 0.15); color: var(--color-danger); }
.badge-info     { background: rgba(56, 189, 248, 0.15); color: var(--color-info); }

/* Status dot */
.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
  margin-right: var(--space-2);
}
.status-dot.online  { background: var(--color-success); box-shadow: 0 0 8px rgba(52, 211, 153, 0.6); }
.status-dot.offline { background: var(--text-muted); }
.status-dot.pending { background: var(--color-warning); box-shadow: 0 0 8px rgba(251, 191, 36, 0.6); }

/* ============================================
   9. TABS
   ============================================ */
.tabs {
  display: flex;
  gap: var(--space-1);
  border-bottom: 1px solid var(--glass-border);
  margin-bottom: var(--space-6);
  overflow-x: auto;
}
.tab-btn {
  padding: var(--space-3) var(--space-5);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-fast);
}
.tab-btn:hover {
  color: var(--text-primary);
  background: var(--glass-bg);
}
.tab-btn.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.tab-content {
  display: none;
}
.tab-content.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

/* ============================================
   10. ACCORDION (FAQ)
   ============================================ */
.accordion-item {
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  margin-bottom: var(--space-3);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}
.accordion-item:hover {
  border-color: var(--glass-border-hover);
}
.accordion-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  cursor: pointer;
  background: var(--glass-bg);
  transition: background var(--transition-fast);
}
.accordion-header:hover {
  background: var(--glass-bg-hover);
}
.accordion-header h4 {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--text-primary);
}
.accordion-icon {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: transform var(--transition-base);
  flex-shrink: 0;
}
.accordion-item.active .accordion-icon {
  transform: rotate(180deg);
}
.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.16, 1, 0.3, 1),
              padding 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.accordion-item.active .accordion-body {
  max-height: 500px;
  padding: 0 var(--space-6) var(--space-5);
}
.accordion-body p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

/* ============================================
   11. PAGINATION
   ============================================ */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  margin-top: var(--space-8);
}
.page-btn {
  min-width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 var(--space-3);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.page-btn:hover {
  background: var(--glass-bg-hover);
  color: var(--text-primary);
}
.page-btn.active {
  background: var(--gradient-primary);
  color: white;
  border-color: transparent;
}
.page-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

/* ============================================
   12. SEARCH BAR
   ============================================ */
.search-bar {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  transition: all var(--transition-fast);
}
.search-bar:focus-within {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(129, 140, 248, 0.15);
}
.search-bar .search-icon {
  color: var(--text-tertiary);
  flex-shrink: 0;
}
.search-bar input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: var(--text-sm);
}
.search-bar input::placeholder {
  color: var(--text-muted);
}

/* ============================================
   13. FLOATING ACTION BUTTONS
   ============================================ */
/* WhatsApp */
.fab-whatsapp {
  position: fixed;
  bottom: var(--space-6);
  left: var(--space-6);
  width: 56px;
  height: 56px;
  border-radius: var(--radius-full);
  background: #25D366;
  color: white;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-2xl);
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
  z-index: var(--z-sticky);
  transition: all var(--transition-base);
  animation: float 3s ease-in-out infinite;
  text-decoration: none;
}
.fab-whatsapp:hover {
  transform: scale(1.1);
  box-shadow: 0 8px 30px rgba(37, 211, 102, 0.6);
}

/* Scroll to Top */
.fab-scroll-top {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background: var(--gradient-primary);
  color: white;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-lg);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-sticky);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-base);
}
.fab-scroll-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.fab-scroll-top:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

/* ============================================
   14. FOOTER
   ============================================ */
.footer {
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--glass-border);
  padding: var(--space-16) 0 var(--space-8);
  position: relative;
}
.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--gradient-primary);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}
.footer-brand {
  max-width: 320px;
}
.footer-brand .navbar-logo {
  margin-bottom: var(--space-4);
}
.footer-brand p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}
.footer-socials {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-6);
}
.footer-socials a {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-lg);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition-base);
}
.footer-socials a:hover {
  background: var(--gradient-primary);
  border-color: transparent;
  color: white;
  transform: translateY(-3px);
}

.footer-col h4 {
  font-size: var(--text-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  margin-bottom: var(--space-5);
}
.footer-col ul li {
  margin-bottom: var(--space-3);
}
.footer-col ul li a {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}
.footer-col ul li a:hover {
  color: var(--color-primary);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-8);
  border-top: 1px solid var(--glass-border);
}
.footer-bottom p {
  font-size: var(--text-xs);
  color: var(--text-muted);
}
.footer-bottom-links {
  display: flex;
  gap: var(--space-6);
}
.footer-bottom-links a {
  font-size: var(--text-xs);
  color: var(--text-muted);
}
.footer-bottom-links a:hover {
  color: var(--text-secondary);
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
  .footer-bottom {
    flex-direction: column;
    gap: var(--space-4);
    text-align: center;
  }
}

/* ============================================
   15. AVATAR
   ============================================ */
.avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  overflow: hidden;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--text-sm);
  color: white;
  flex-shrink: 0;
}
.avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.avatar.sm { width: 32px; height: 32px; font-size: var(--text-xs); }
.avatar.lg { width: 56px; height: 56px; font-size: var(--text-xl); }
.avatar.xl { width: 80px; height: 80px; font-size: var(--text-3xl); }

/* ============================================
   16. EMPTY STATE
   ============================================ */
.empty-state {
  text-align: center;
  padding: var(--space-16) var(--space-8);
}
.empty-state .empty-icon {
  font-size: 4rem;
  margin-bottom: var(--space-4);
  opacity: 0.3;
}
.empty-state h3 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-2);
}
.empty-state p {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  max-width: 400px;
  margin: 0 auto var(--space-6);
}

/* ============================================
   17. SKELETON LOADING
   ============================================ */
.skeleton {
  background: linear-gradient(90deg, var(--glass-bg) 25%, var(--glass-bg-hover) 50%, var(--glass-bg) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-md);
}
.skeleton-text {
  height: 16px;
  margin-bottom: var(--space-2);
  border-radius: var(--radius-sm);
}
.skeleton-text:last-child {
  width: 60%;
}
.skeleton-title {
  height: 24px;
  width: 50%;
  margin-bottom: var(--space-4);
}
.skeleton-avatar {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
}
.skeleton-card {
  height: 200px;
  border-radius: var(--radius-xl);
}

/* ============================================
   18. PROGRESS BAR
   ============================================ */
.progress-bar {
  width: 100%;
  height: 8px;
  background: var(--glass-bg);
  border-radius: var(--radius-full);
  overflow: hidden;
}
.progress-bar .progress-fill {
  height: 100%;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  transition: width 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ============================================
   19. TOOLTIP
   ============================================ */
[data-tooltip] {
  position: relative;
}
[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  font-size: var(--text-xs);
  color: var(--text-primary);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: all var(--transition-fast);
  z-index: var(--z-tooltip);
}
[data-tooltip]:hover::after {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ============================================
   20. DARK MODE TOGGLE
   ============================================ */
.theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-lg);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-lg);
  transition: all var(--transition-base);
}
.theme-toggle:hover {
  background: var(--glass-bg-hover);
  color: var(--text-primary);
}