/* ============================================
   COMPONENTS.CSS - Các thành phần UI dùng chung
   ============================================ */

/* ---------- Button ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: var(--font-size-base);
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-cta);
  color: #fff;
  box-shadow: var(--shadow-primary);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(37, 99, 235, 0.35);
}

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--color-primary);
  color: var(--color-primary);
}
.btn-outline:hover {
  background: rgba(var(--color-primary-rgb), 0.08);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text);
}
.btn-ghost:hover { background: var(--color-surface-alt); }

.btn-danger {
  background: var(--color-danger);
  color: #fff;
}

.btn-sm { padding: 8px 16px; font-size: var(--font-size-sm); }
.btn-lg { padding: 16px 32px; font-size: var(--font-size-lg); }
.btn-block { width: 100%; }
.btn:disabled { opacity: 0.6; cursor: not-allowed; transform: none !important; }

.btn-icon {
  width: 40px; height: 40px;
  border-radius: var(--radius-full);
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--color-surface-alt);
  color: var(--color-text);
  transition: all var(--transition-fast);
}
.btn-icon:hover { background: var(--color-border); }

/* ---------- Card ---------- */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

/* Glassmorphism card */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
}

/* Feature card (trang chủ) */
.feature-card {
  text-align: center;
  padding: var(--space-6) var(--space-5);
}
.feature-card .icon-wrap {
  width: 64px; height: 64px;
  margin: 0 auto var(--space-4);
  border-radius: var(--radius-lg);
  background: rgba(var(--color-primary-rgb), 0.1);
  display: flex; align-items: center; justify-content: center;
  color: var(--color-primary);
}
.feature-card .icon-wrap svg { width: 32px; height: 32px; }

/* Pricing card */
.pricing-card {
  text-align: center;
  position: relative;
  border-width: 2px;
}
.pricing-card.featured {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-primary);
}
.pricing-card .badge-popular {
  position: absolute;
  top: -14px; left: 50%; transform: translateX(-50%);
  background: var(--gradient-cta);
  color: #fff;
  padding: 4px 16px;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 700;
}
.pricing-card .price {
  font-size: var(--font-size-4xl);
  font-weight: 800;
  color: var(--color-primary);
  margin: var(--space-3) 0;
}
.pricing-card .price span { font-size: var(--font-size-base); color: var(--color-text-muted); font-weight: 400; }
.pricing-card ul { text-align: left; margin: var(--space-4) 0; }
.pricing-card li {
  display: flex; align-items: center; gap: var(--space-2);
  padding: var(--space-2) 0;
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}
.pricing-card li svg { color: var(--color-success); flex-shrink: 0; width: 18px; height: 18px; }

/* ---------- Form ---------- */
.form-group { margin-bottom: var(--space-4); }
.form-label {
  display: block;
  font-weight: 600;
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-2);
  color: var(--color-text);
}
.form-control {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: var(--font-size-base);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(var(--color-primary-rgb), 0.15);
}
.form-control.error { border-color: var(--color-danger); }
.form-error-text { color: var(--color-danger); font-size: var(--font-size-xs); margin-top: var(--space-1); }
.form-hint { color: var(--color-text-light); font-size: var(--font-size-xs); margin-top: var(--space-1); }

.input-group { position: relative; }
.input-group .form-control { padding-right: 44px; }
.input-group .input-icon {
  position: absolute; right: 14px; top: 50%; transform: translateY(-50%);
  color: var(--color-text-light);
}

/* OTP input */
.otp-inputs { display: flex; gap: var(--space-2); justify-content: center; }
.otp-inputs input {
  width: 48px; height: 56px;
  text-align: center;
  font-size: var(--font-size-2xl);
  font-weight: 700;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  color: var(--color-text);
}
.otp-inputs input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(var(--color-primary-rgb), 0.15);
}

/* ---------- Badge ---------- */
.badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 600;
}
.badge-success { background: var(--color-success-bg); color: var(--color-success); }
.badge-danger { background: var(--color-danger-bg); color: var(--color-danger); }
.badge-warning { background: var(--color-warning-bg); color: var(--color-warning); }
.badge-info { background: var(--color-info-bg); color: var(--color-info); }

/* ---------- Loader / Spinner ---------- */
.spinner {
  width: 20px; height: 20px;
  border: 2.5px solid rgba(255,255,255,0.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
.spinner-primary {
  border: 2.5px solid rgba(var(--color-primary-rgb), 0.2);
  border-top-color: var(--color-primary);
}
.spinner-lg { width: 36px; height: 36px; border-width: 3.5px; }
@keyframes spin { to { transform: rotate(360deg); } }

.page-loader {
  position: fixed; inset: 0;
  background: var(--color-bg);
  display: flex; align-items: center; justify-content: center;
  z-index: 9999;
}

/* Skeleton loading */
.skeleton {
  background: linear-gradient(90deg, var(--color-surface-alt) 25%, var(--color-border) 50%, var(--color-surface-alt) 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.4s ease infinite;
  border-radius: var(--radius-sm);
}
@keyframes skeleton-loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}
.skeleton-row { height: 44px; margin-bottom: var(--space-2); border-radius: var(--radius-md); }

/* ---------- Toast ---------- */
.toast-container {
  position: fixed; top: 20px; right: 20px;
  z-index: 10000;
  display: flex; flex-direction: column; gap: var(--space-2);
}
.toast {
  min-width: 280px; max-width: 360px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  background: var(--color-surface);
  border-left: 4px solid var(--color-primary);
  box-shadow: var(--shadow-lg);
  display: flex; align-items: flex-start; gap: var(--space-3);
  animation: toast-in 0.3s ease;
  font-size: var(--font-size-sm);
}
.toast.success { border-left-color: var(--color-success); }
.toast.error { border-left-color: var(--color-danger); }
.toast.warning { border-left-color: var(--color-warning); }
@keyframes toast-in {
  from { opacity: 0; transform: translateX(40px); }
  to { opacity: 1; transform: translateX(0); }
}
.toast.hide { animation: toast-out 0.3s ease forwards; }
@keyframes toast-out {
  to { opacity: 0; transform: translateX(40px); }
}

/* ---------- Modal ---------- */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(11, 18, 32, 0.55);
  backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center;
  z-index: 9000;
  padding: var(--space-4);
}
.modal {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  max-width: 460px; width: 100%;
  padding: var(--space-6);
  box-shadow: var(--shadow-lg);
  animation: modal-in 0.25s ease;
}
@keyframes modal-in {
  from { opacity: 0; transform: scale(0.94) translateY(10px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

/* ---------- Table ---------- */
.table-wrap { overflow-x: auto; border-radius: var(--radius-lg); border: 1px solid var(--color-border); }
table { width: 100%; border-collapse: collapse; font-size: var(--font-size-sm); }
th, td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--color-border); }
th { background: var(--color-surface-alt); font-weight: 700; color: var(--color-text); }
tbody tr:hover { background: var(--color-surface-alt); }
tbody tr:last-child td { border-bottom: none; }

/* ---------- Accordion (FAQ) ---------- */
.accordion-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-3);
  overflow: hidden;
}
.accordion-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  cursor: pointer;
  font-weight: 600;
}
.accordion-header .chevron { transition: transform var(--transition-base); color: var(--color-primary); }
.accordion-item.open .chevron { transform: rotate(180deg); }
.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base);
  padding: 0 var(--space-5);
  color: var(--color-text-muted);
}
.accordion-item.open .accordion-body { padding-bottom: var(--space-4); }

/* ---------- Chat widget ---------- */
.chat-widget-btn {
  position: fixed; bottom: 24px; right: 24px;
  width: 60px; height: 60px;
  border-radius: 50%;
  background: var(--gradient-cta);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-primary);
  z-index: 8000;
  transition: transform var(--transition-fast);
}
.chat-widget-btn:hover { transform: scale(1.08); }

.contact-fab {
  position: fixed; bottom: 96px; right: 24px;
  display: flex; flex-direction: column; gap: var(--space-3);
  z-index: 7999;
}
.contact-fab a {
  width: 48px; height: 48px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-md);
  color: #fff;
}
.contact-fab .zalo { background: #0068ff; }
.contact-fab .messenger { background: linear-gradient(135deg,#00c6ff,#0072ff); }
.contact-fab .facebook { background: #1877f2; }

/* ---------- Progress bar ---------- */
.progress-bar { height: 8px; background: var(--color-surface-alt); border-radius: var(--radius-full); overflow: hidden; }
.progress-bar-fill { height: 100%; background: var(--gradient-cta); transition: width var(--transition-base); }