/* ===========================================
   custom.css — Tindev Việt Nam
   Chỉ chứa những gì Tailwind CDN không cover
   =========================================== */

/* ── Google Fonts import ── */
@import url('https://fonts.googleapis.com/css2?family=Be+Vietnam+Pro:wght@400;500;600;700;800&family=Inter:wght@400;500;600&display=swap');

/* ── CSS Variables (dùng khi cần JS đọc) ── */
:root {
  --color-primary: #014694;
  --color-cyan: #13BCFF;
  --color-accent: #0275D8;
  --color-dark: #0A1628;
  --color-background: #F4F6FA;
  --color-surface: #FFFFFF;
  --color-muted: #6B7280;
  --color-border: #E5E7EB;

  --font-display: 'Be Vietnam Pro', sans-serif;
  --font-body: 'Inter', sans-serif;

  --topbar-height: 40px;
  --header-height: 72px;
  --total-offset: 112px;
  /* topbar + header */

  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 500ms ease;
}

/* ── Base reset thêm ── */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--total-offset);
}

body {
  font-family: var(--font-body);
  background-color: var(--color-background);
  color: #1A2638;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ── Typography helpers ── */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  line-height: 1.2;
}

/* ── Gradients (dùng trực tiếp bằng class) ── */
.bg-hero-gradient {
  background: linear-gradient(135deg, #014694 0%, #013370 50%, #0A1628 100%);
}

.bg-cta-gradient {
  background: linear-gradient(135deg, #013370 0%, #0A1628 100%);
}

.bg-cyan-gradient {
  background: linear-gradient(90deg, #13BCFF 0%, #014694 100%);
}

.bg-card-overlay {
  background: linear-gradient(180deg, transparent 50%, rgba(1, 70, 148, 0.85) 100%);
}

/* ── Text gradient ── */
.text-gradient {
  background: linear-gradient(90deg, #13BCFF, #ffffff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Navbar (sticky, sits at top of viewport when scrolled) ── */
#header {
  transition: box-shadow var(--transition-base), background var(--transition-base);
}

#header.scrolled {
  background: rgba(255, 255, 255, 0.97) !important;
  box-shadow: 0 2px 20px rgba(1, 70, 148, 0.1);
}

/* ── Dropdown animation ── */
.dropdown-menu {
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity var(--transition-fast),
    transform var(--transition-fast),
    visibility var(--transition-fast);
}

.dropdown-trigger:hover .dropdown-menu,
.dropdown-trigger.active .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* ── Mobile menu ── */
#mobile-menu {
  transform: translateY(-100%);
  transition: transform 0.3s ease;
}

#mobile-menu.open {
  transform: translateY(0);
}

/* ── Mobile accordion panel (JS sets max-height) ── */
.mobile-dropdown-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base);
}

.arrow-icon {
  transition: transform var(--transition-base);
}

/* ── Card hover effects ── */
.card-hover {
  transition: transform var(--transition-base),
    box-shadow var(--transition-base);
}

.card-hover:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(1, 70, 148, 0.15);
}

/* ── Pricing card ── */
.pricing-card-popular {
  transform: scale(1.05);
  box-shadow: 0 12px 40px rgba(1, 70, 148, 0.2);
  border: 2px solid var(--color-cyan);
  position: relative;
  z-index: 2;
}

/* ── Button styles ── */
.btn-primary,
.btn-cyan,
.btn-outline {
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

.btn-primary {
  background-color: var(--color-primary);
  color: white;
  padding: 0.625rem 1.5rem;
  border-radius: 0.5rem;
  font-weight: 600;
  font-family: var(--font-display);
  transition: background-color var(--transition-base), transform var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  white-space: nowrap;
}

.btn-primary:hover {
  background-color: var(--color-accent);
  transform: translateY(-1px);
}

.btn-cyan {
  background-color: var(--color-cyan);
  color: var(--color-primary);
  padding: 0.625rem 1.5rem;
  border-radius: 0.5rem;
  font-weight: 700;
  font-family: var(--font-display);
  transition: opacity var(--transition-base), transform var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-cyan:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

.btn-outline {
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
  padding: 0.563rem 1.5rem;
  border-radius: 0.5rem;
  font-weight: 600;
  font-family: var(--font-display);
  transition: all var(--transition-base);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-outline:hover {
  background-color: var(--color-primary);
  color: white;
}

.btn-ghost-white {
  border: 1.5px solid rgba(255, 255, 255, 0.4);
  color: white;
  padding: 0.563rem 1.5rem;
  border-radius: 0.5rem;
  font-weight: 600;
  transition: all var(--transition-base);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-ghost-white:hover {
  background-color: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.7);
}

.btn-outline-white {
  border: 2px solid rgba(255, 255, 255, 0.5);
  color: white;
  padding: 0.563rem 1.5rem;
  border-radius: 0.5rem;
  font-weight: 600;
  font-family: var(--font-display);
  transition: all var(--transition-base);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-outline-white:hover {
  background-color: rgba(255, 255, 255, 0.12);
  border-color: white;
}

/* Filter tab active state */
.gallery-tab.active {
  background-color: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

/* ── Section divider ── */
.section-divider {
  width: 48px;
  height: 4px;
  background: linear-gradient(90deg, var(--color-cyan), var(--color-primary));
  border-radius: 2px;
  margin: 0.75rem auto 0;
}

.section-divider.left {
  margin-left: 0;
}

/* ── Stats counter ── */
.stat-number {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 2.5rem;
  line-height: 1;
  color: white;
}

/* ── Scroll reveal (JS toggle) ── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 {
  transition-delay: 0.1s;
}

.reveal-delay-2 {
  transition-delay: 0.2s;
}

.reveal-delay-3 {
  transition-delay: 0.3s;
}

.reveal-delay-4 {
  transition-delay: 0.4s;
}

/* ── Image zoom on hover ── */
.img-zoom-wrap {
  overflow: hidden;
}

.img-zoom-wrap img {
  transition: transform 0.4s ease;
}

.img-zoom-wrap:hover img {
  transform: scale(1.06);
}

/* ── Badge ── */
.badge-cyan {
  display: inline-block;
  background: rgba(19, 188, 255, 0.12);
  color: var(--color-cyan);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
}

.badge-popular {
  background: var(--color-cyan);
  color: var(--color-primary);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.2rem 0.7rem;
  border-radius: 9999px;
}

/* ── FAQ accordion ── */
.faq-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base);
}

.faq-icon {
  transition: transform var(--transition-base);
}

.faq-item.open .faq-icon {
  transform: rotate(45deg);
}

/* ── Form ── */
.form-input {
  width: 100%;
  background: white;
  border: 1.5px solid var(--color-border);
  color: #1A2638;
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
  outline: none;
}

.form-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(1, 70, 148, 0.1);
}

.form-input.error {
  border-color: #ef4444;
}

.form-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-muted);
  margin-bottom: 0.4rem;
}

/* ── Scrollbar ── */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
  background: var(--color-primary);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-accent);
}

/* ── Utilities ── */
.no-scrollbar::-webkit-scrollbar {
  display: none;
}

.no-scrollbar {
  -ms-overflow-style: none;
  scrollbar-width: none;
}

nav .dropdown-menu ul li {
  border-bottom: 1px solid #e3e3e3;
}

.slide h2 {
  font-size: 25px;
  text-transform: uppercase;
  line-height: 32px;
}

#footer {
  padding: 70px 0px 20px 0px;
}

#footer ul li a,
#footer ul li {
  color: #ffffff;
}