/* ============================================
   Lankv Studio — Theme sáng, font dễ đọc
   ============================================ */

:root {
  --bg-deep: #f3faf7;
  --bg-card: #ffffff;
  --bg-elevated: #e8f7f2;
  --border-subtle: rgba(15, 118, 110, 0.12);
  --accent: #0d9488;
  --accent-strong: #0f766e;
  --accent-blue: #0284c7;
  --text: #0f172a;
  --text-muted: #475569;
  --glow: rgba(13, 148, 136, 0.25);
  --radius: 1rem;
  --font-display: "Sora", "Be Vietnam Pro", system-ui, sans-serif;
  --font-body: "Be Vietnam Pro", system-ui, sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.7;
  background-color: var(--bg-deep);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

.font-display {
  font-family: var(--font-display);
  letter-spacing: -0.02em;
  line-height: 1.25;
}

/* --- Nền sáng --- */
.bg-atmosphere {
  background:
    radial-gradient(ellipse 90% 55% at 50% -15%, rgba(45, 212, 191, 0.28), transparent 55%),
    radial-gradient(ellipse 50% 40% at 100% 10%, rgba(56, 189, 248, 0.18), transparent 50%),
    radial-gradient(ellipse 45% 35% at 0% 30%, rgba(20, 184, 166, 0.12), transparent 45%),
    linear-gradient(180deg, #f8fffc 0%, #eef8f4 45%, #f3faf7 100%);
}

.bg-grid {
  background-image:
    linear-gradient(rgba(13, 148, 136, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(13, 148, 136, 0.06) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, black 0%, transparent 85%);
}

.logo-mark {
  background: linear-gradient(135deg, #14b8a6, #0284c7);
  color: #fff !important;
  box-shadow: 0 6px 18px var(--glow);
}

/* --- Nút --- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.9rem 1.75rem;
  font-weight: 700;
  font-size: 0.98rem;
  color: #fff;
  background: linear-gradient(135deg, #14b8a6, #0d9488);
  border-radius: 9999px;
  border: none;
  cursor: pointer;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  box-shadow: 0 8px 22px rgba(13, 148, 136, 0.3);
  text-decoration: none;
}

.btn-primary:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 12px 28px rgba(13, 148, 136, 0.4);
}

.btn-primary:active {
  transform: translateY(0) scale(0.98);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.9rem 1.75rem;
  font-weight: 700;
  font-size: 0.98rem;
  color: var(--accent-strong);
  background: #fff;
  border: 1.5px solid rgba(13, 148, 136, 0.35);
  border-radius: 9999px;
  cursor: pointer;
  transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease;
  text-decoration: none;
}

.btn-secondary:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  background: #f0fdfa;
}

.btn-hotline {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 1.1rem;
  font-weight: 700;
  font-size: 0.875rem;
  color: #fff;
  background: linear-gradient(135deg, #14b8a6, #0d9488);
  border-radius: 9999px;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  box-shadow: 0 4px 14px rgba(13, 148, 136, 0.28);
  text-decoration: none;
  white-space: nowrap;
}

.btn-hotline:hover {
  transform: translateY(-1px) scale(1.03);
}

.btn-download {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  padding: 1.1rem 2.25rem;
  font-weight: 800;
  font-size: 1.05rem;
  color: #fff;
  background: linear-gradient(135deg, #2dd4bf, #0d9488 55%, #0284c7);
  background-size: 200% 200%;
  border-radius: 9999px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  animation: shimmer 4s ease infinite;
  box-shadow: 0 10px 32px rgba(13, 148, 136, 0.35);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.btn-download:hover {
  transform: translateY(-3px) scale(1.03);
}

@keyframes shimmer {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

/* --- Cards --- */
.service-card,
.feature-item,
.price-card {
  background: #fff;
  border: 1px solid var(--border-subtle);
  border-radius: 1.25rem;
  box-shadow: 0 8px 24px rgba(15, 118, 110, 0.06);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.service-card {
  position: relative;
  padding: 1.75rem;
  overflow: hidden;
}

.service-card:hover,
.feature-item:hover,
.price-card:hover {
  transform: translateY(-4px);
  border-color: rgba(13, 148, 136, 0.35);
  box-shadow: 0 16px 40px rgba(13, 148, 136, 0.12);
}

.feature-item {
  display: flex;
  gap: 1.25rem;
  padding: 1.5rem;
}

.price-card {
  padding: 2rem;
}

.price-card--vip {
  border-color: rgba(13, 148, 136, 0.45);
  background: linear-gradient(165deg, #ffffff, #f0fdfa);
  box-shadow: 0 16px 40px rgba(13, 148, 136, 0.14);
  position: relative;
  overflow: hidden;
}

.service-icon {
  width: 3rem;
  height: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.85rem;
  background: #ccfbf1;
  color: var(--accent-strong);
  border: 1px solid rgba(13, 148, 136, 0.2);
}

.badge-scarce {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #b45309;
  background: #fff7ed;
  border: 1px solid #fdba74;
  border-radius: 9999px;
}

.video-frame {
  position: relative;
  aspect-ratio: 16 / 9;
  background: #fff;
  border: 1px solid var(--border-subtle);
  border-radius: 1.25rem;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(15, 118, 110, 0.12);
}

.video-frame__glow {
  display: none;
}

.video-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  gap: 1rem;
  color: var(--text-muted);
  background: #f0fdfa;
}

.play-btn {
  width: 4.5rem;
  height: 4.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: #ccfbf1;
  border: 2px solid var(--accent);
  color: var(--accent-strong);
  cursor: pointer;
  transition: transform 0.3s ease;
}

.play-btn:hover {
  transform: scale(1.08);
}

.step-num {
  width: 2.75rem;
  height: 2.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  color: #fff;
  background: linear-gradient(135deg, #14b8a6, #0284c7);
  border-radius: 0.85rem;
  flex-shrink: 0;
}

.qr-box {
  width: 160px;
  height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  border-radius: 0.75rem;
  border: 1px solid var(--border-subtle);
  overflow: hidden;
  padding: 0.5rem;
}

.qr-box img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.site-header {
  backdrop-filter: blur(14px);
  background: rgba(255, 255, 255, 0.85);
  border-bottom: 1px solid var(--border-subtle);
}

.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 8px 24px rgba(15, 118, 110, 0.08);
}

.mobile-menu {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

.mobile-menu.open {
  max-height: 360px;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.65s ease, transform 0.65s 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; }

.text-gradient {
  background: linear-gradient(135deg, #0d9488, #0284c7);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.site-footer {
  border-top: 1px solid var(--border-subtle);
  background: #ecfdf8;
}

.divider-glow {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(13, 148, 136, 0.35), transparent);
}

.nav-link {
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.92rem;
  transition: color 0.2s ease;
  text-decoration: none;
}

.nav-link:hover {
  color: var(--accent-strong);
}

.avatar-ring {
  padding: 3px;
  background: linear-gradient(135deg, #14b8a6, #0284c7);
  border-radius: 50%;
}

.price-old {
  text-decoration: line-through;
  color: var(--text-muted);
}

::selection {
  background: rgba(13, 148, 136, 0.25);
  color: #0f172a;
}

/* --- Ảnh demo + lightbox --- */
.mock-frame {
  border-radius: 1.25rem;
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  box-shadow: 0 18px 48px rgba(15, 118, 110, 0.12);
  background: #fff;
  position: relative;
}

.mock-frame img {
  display: block;
  width: 100%;
  height: auto;
}

.zoomable {
  cursor: zoom-in;
  position: relative;
}

.zoomable::after {
  content: "Phóng to";
  position: absolute;
  right: 0.75rem;
  bottom: 0.75rem;
  padding: 0.3rem 0.65rem;
  font-size: 0.72rem;
  font-weight: 700;
  color: #0f766e;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(13, 148, 136, 0.25);
  border-radius: 9999px;
  pointer-events: none;
}

.gallery-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 640px) {
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .gallery-grid.gallery-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

.gallery-item {
  border-radius: 1rem;
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  background: #fff;
  box-shadow: 0 8px 24px rgba(15, 118, 110, 0.08);
  cursor: zoom-in;
  position: relative;
}

.gallery-item img {
  display: block;
  width: 100%;
  height: auto;
  transition: transform 0.35s ease;
}

.gallery-item:hover img {
  transform: scale(1.03);
}

.gallery-item figcaption {
  padding: 0.75rem 1rem;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-muted);
  border-top: 1px solid var(--border-subtle);
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  background: rgba(15, 23, 42, 0.82);
  backdrop-filter: blur(6px);
}

.lightbox.open {
  display: flex;
}

.lightbox img {
  max-width: min(1100px, 96vw);
  max-height: 88vh;
  border-radius: 0.75rem;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.4);
  background: #fff;
}

.lightbox-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 2.75rem;
  height: 2.75rem;
  border: none;
  border-radius: 9999px;
  background: #fff;
  color: #0f172a;
  font-size: 1.4rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.lightbox-caption {
  position: absolute;
  bottom: 1.25rem;
  left: 50%;
  transform: translateX(-50%);
  max-width: 90vw;
  padding: 0.5rem 1rem;
  border-radius: 9999px;
  background: rgba(255, 255, 255, 0.95);
  color: #0f172a;
  font-size: 0.9rem;
  font-weight: 600;
}

.content-block {
  background: #fff;
  border: 1px solid var(--border-subtle);
  border-radius: 1.25rem;
  padding: 1.5rem 1.75rem;
  box-shadow: 0 8px 24px rgba(15, 118, 110, 0.05);
}

.content-block h3 {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.5rem;
}

.content-block p,
.content-block li {
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.75;
}

.content-block ul {
  margin-top: 0.75rem;
  padding-left: 1.15rem;
  list-style: disc;
}

.cta-dock {
  position: fixed !important;
  left: 0 !important;
  right: 0 !important;
  bottom: 0 !important;
  top: auto !important;
  z-index: 9999 !important;
  display: flex !important;
  flex-direction: row !important;
  align-items: center;
  gap: 0.5rem;
  width: 100% !important;
  max-width: none !important;
  margin: 0 !important;
  padding: 0.7rem 0.9rem calc(0.7rem + env(safe-area-inset-bottom, 0px)) !important;
  background: rgba(255, 255, 255, 0.96) !important;
  border-top: 1px solid rgba(13, 148, 136, 0.18);
  box-sizing: border-box;
  box-shadow: 0 -8px 28px rgba(15, 118, 110, 0.1);
}

.cta-dock a {
  flex: 1 1 0;
  margin: 0;
}

body.has-sticky-cta {
  padding-bottom: 5.25rem !important;
}

/* --- Ghi đè class tối cũ trên HTML (tương thích ngược) --- */
.text-white { color: #0f172a !important; }
.text-slate-300 { color: #334155 !important; }
.text-slate-400 { color: #475569 !important; }
.text-slate-500 { color: #64748b !important; }
.text-slate-600 { color: #475569 !important; }
.border-slate-700,
.border-slate-800,
.border-slate-800\/80 { border-color: rgba(13, 148, 136, 0.14) !important; }
.bg-ink,
.bg-ink-soft,
.bg-ink-soft\/60,
.bg-ink-soft\/70,
.bg-ink-soft\/80,
.bg-ink-elev {
  background-color: #ffffff !important;
}
.from-teal-950\/40,
.to-ink,
.from-teal-950\/50,
.to-sky-950\/30 {
  --tw-gradient-from: #ccfbf1 !important;
  --tw-gradient-to: #e0f2fe !important;
}
.hover\:bg-white\/5:hover {
  background-color: rgba(13, 148, 136, 0.06) !important;
}
.group:hover .group-hover\:text-accent {
  color: var(--accent-strong) !important;
}