/* ============================================================
   RT TECHREAL — DARK LUXURY GOLD DESIGN SYSTEM
   Version: 1.0 | Bricks 2.0.1
   Brand: Dark #080808 + Gold #F5C518
   ============================================================ */

/* ============================================================
   1. CSS VARIABLES
   ============================================================ */
:root {
  /* --- Background Levels --- */
  --rt-bg-0:         #050505;
  --rt-bg-1:         #080808;
  --rt-bg-2:         #111111;
  --rt-bg-3:         #1A1A1A;
  --rt-bg-4:         #222222;
  --rt-border:       #2A2A2A;
  --rt-border-light: #383838;

  /* --- Gold Palette --- */
  --rt-gold:         #F5C518;
  --rt-gold-light:   #FFD700;
  --rt-gold-dark:    #C8890A;
  --rt-gold-pale:    rgba(245, 197, 24, 0.08);
  --rt-gold-glow:    rgba(245, 197, 24, 0.25);

  /* --- Text --- */
  --rt-white:        #FFFFFF;
  --rt-text:         #E0E0E0;
  --rt-text-2:       #B0B0B0;
  --rt-text-muted:   #707070;

  /* --- Gradients --- */
  --rt-grad-gold:    linear-gradient(135deg, #FFD700 0%, #F5C518 45%, #C8890A 100%);
  --rt-grad-dark:    linear-gradient(135deg, #1A1A1A 0%, #080808 100%);
  --rt-grad-hero:    linear-gradient(135deg, #0A0A0A 0%, #180E00 50%, #0A0A0A 100%);
  --rt-grad-card:    linear-gradient(145deg, #1E1E1E 0%, #131313 100%);
  --rt-grad-border:  linear-gradient(135deg, #F5C518, #C8890A);

  /* --- Shadows --- */
  --rt-shadow-sm:    0 2px 12px rgba(0,0,0,0.4);
  --rt-shadow-md:    0 4px 30px rgba(0,0,0,0.5);
  --rt-shadow-lg:    0 8px 60px rgba(0,0,0,0.6);
  --rt-shadow-gold:  0 0 40px rgba(245,197,24,0.2);
  --rt-shadow-btn:   0 4px 20px rgba(245,197,24,0.35);

  /* --- Radius --- */
  --rt-r-sm:    8px;
  --rt-r-md:    12px;
  --rt-r-lg:    20px;
  --rt-r-xl:    32px;
  --rt-r-full:  9999px;

  /* --- Spacing --- */
  --rt-section-py: 100px;
  --rt-container:  1240px;

  /* --- Transition --- */
  --rt-ease:      all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --rt-ease-slow: all 0.55s cubic-bezier(0.4, 0, 0.2, 1);

  /* --- Fonts --- */
  --rt-font-head: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --rt-font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* ============================================================
   2. GLOBAL RESET & BASE
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body.rt-dark-theme {
  background-color: var(--rt-bg-1);
  color: var(--rt-text);
  font-family: var(--rt-font-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Custom Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--rt-bg-2); }
::-webkit-scrollbar-thumb {
  background: var(--rt-gold-dark);
  border-radius: var(--rt-r-full);
}
::-webkit-scrollbar-thumb:hover { background: var(--rt-gold); }

/* Selection */
::selection {
  background: var(--rt-gold);
  color: var(--rt-bg-1);
}

/* ============================================================
   3. TYPOGRAPHY
   ============================================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--rt-font-head);
  color: var(--rt-white);
  line-height: 1.15;
  font-weight: 700;
  margin: 0;
}

h1 { font-size: clamp(2.5rem, 5vw, 4.5rem); }
h2 { font-size: clamp(2rem, 4vw, 3.2rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: clamp(1.2rem, 2vw, 1.5rem); }
h5 { font-size: 1.15rem; }
h6 { font-size: 1rem; }

p {
  font-family: var(--rt-font-body);
  color: var(--rt-text-2);
  line-height: 1.75;
  margin: 0;
}

a {
  color: var(--rt-gold);
  text-decoration: none;
  transition: var(--rt-ease);
}

a:hover { color: var(--rt-gold-light); }

/* Gold text highlight */
.rt-text-gold,
[class*="rt-"] .gold {
  background: var(--rt-grad-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ============================================================
   4. LOGO RT
   ============================================================ */
.rt-logo,
.bricks-site-logo .rt-logo {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  line-height: 1;
  cursor: pointer;
}

.rt-logo-text {
  font-family: var(--rt-font-head);
  font-size: 2.4rem;
  font-weight: 900;
  font-style: italic;
  background: var(--rt-grad-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
  text-shadow: none;
  filter: drop-shadow(0 2px 8px rgba(245,197,24,0.4));
}

.rt-logo-sub {
  font-family: var(--rt-font-body);
  font-size: 0.55rem;
  font-weight: 700;
  letter-spacing: 0.35em;
  color: var(--rt-text-muted);
  text-transform: uppercase;
  margin-top: -2px;
}

/* ============================================================
   5. BUTTONS
   ============================================================ */

/* --- Primary Gold Button --- */
.rt-btn,
.btn-primary,
a.rt-btn-primary,
.brxe-button.rt-btn-primary a,
.brxe-button.rt-btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 36px;
  font-family: var(--rt-font-body);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: var(--rt-grad-gold);
  color: #000 !important;
  border: none;
  border-radius: var(--rt-r-sm);
  cursor: pointer;
  transition: var(--rt-ease);
  box-shadow: var(--rt-shadow-btn);
  white-space: nowrap;
  text-decoration: none;
}

.rt-btn:hover,
a.rt-btn-primary:hover,
.brxe-button.rt-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(245,197,24,0.5);
  filter: brightness(1.1);
  color: #000 !important;
}

/* --- Outline Gold Button --- */
.rt-btn-outline,
a.rt-btn-outline,
.brxe-button.rt-btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 34px;
  font-family: var(--rt-font-body);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: transparent;
  color: var(--rt-gold) !important;
  border: 1.5px solid var(--rt-gold);
  border-radius: var(--rt-r-sm);
  cursor: pointer;
  transition: var(--rt-ease);
  white-space: nowrap;
  text-decoration: none;
}

.rt-btn-outline:hover,
a.rt-btn-outline:hover {
  background: var(--rt-gold-pale);
  border-color: var(--rt-gold-light);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px var(--rt-gold-glow);
}

/* --- Ghost (Dark) Button --- */
.rt-btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  font-family: var(--rt-font-body);
  font-size: 0.9rem;
  font-weight: 600;
  background: var(--rt-bg-3);
  color: var(--rt-text) !important;
  border: 1px solid var(--rt-border-light);
  border-radius: var(--rt-r-sm);
  cursor: pointer;
  transition: var(--rt-ease);
  text-decoration: none;
}

.rt-btn-ghost:hover {
  background: var(--rt-bg-4);
  border-color: var(--rt-gold);
  color: var(--rt-gold) !important;
}

/* ============================================================
   6. SECTION BASE
   ============================================================ */
.rt-section {
  padding: var(--rt-section-py) 0;
  position: relative;
  overflow: hidden;
}

.rt-section-dark  { background: var(--rt-bg-1); }
.rt-section-dark2 { background: var(--rt-bg-2); }
.rt-section-dark3 { background: var(--rt-bg-3); }

/* Section Header (centered title block) */
.rt-section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 64px;
}

.rt-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  font-family: var(--rt-font-body);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--rt-gold);
  background: var(--rt-gold-pale);
  border: 1px solid rgba(245,197,24,0.25);
  border-radius: var(--rt-r-full);
  margin-bottom: 20px;
}

.rt-label::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--rt-gold);
  border-radius: 50%;
}

.rt-section-title {
  font-family: var(--rt-font-head);
  margin-bottom: 16px;
}

.rt-section-title span {
  background: var(--rt-grad-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.rt-section-desc {
  font-size: 1.05rem;
  color: var(--rt-text-2);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.8;
}

/* Gold divider line */
.rt-divider {
  width: 60px;
  height: 3px;
  background: var(--rt-grad-gold);
  border-radius: var(--rt-r-full);
  margin: 20px auto;
}

/* ============================================================
   7. HERO SECTION
   ============================================================ */
.rt-hero {
  min-height: 100vh;
  background: var(--rt-grad-hero);
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 120px 0 80px;
}

/* Animated background particles */
.rt-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 50% 0%, rgba(245,197,24,0.08) 0%, transparent 70%),
    radial-gradient(ellipse 40% 40% at 100% 100%, rgba(245,197,24,0.05) 0%, transparent 60%);
  pointer-events: none;
}

/* Grid dot pattern */
.rt-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle, rgba(245,197,24,0.12) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.4;
  pointer-events: none;
}

.rt-hero-inner {
  position: relative;
  z-index: 2;
}

.rt-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 20px;
  background: rgba(245,197,24,0.1);
  border: 1px solid rgba(245,197,24,0.3);
  border-radius: var(--rt-r-full);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--rt-gold);
  margin-bottom: 28px;
  animation: rt-fade-up 0.6s ease both;
}

.rt-hero-badge span {
  width: 8px;
  height: 8px;
  background: var(--rt-gold);
  border-radius: 50%;
  animation: rt-pulse 2s infinite;
}

.rt-hero-title {
  font-size: clamp(2.8rem, 5.5vw, 5rem);
  font-weight: 900;
  line-height: 1.05;
  margin-bottom: 24px;
  animation: rt-fade-up 0.7s 0.1s ease both;
}

.rt-hero-title .highlight {
  background: var(--rt-grad-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
}

.rt-hero-desc {
  font-size: 1.15rem;
  color: var(--rt-text-2);
  line-height: 1.8;
  max-width: 580px;
  margin-bottom: 40px;
  animation: rt-fade-up 0.7s 0.2s ease both;
}

.rt-hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  animation: rt-fade-up 0.7s 0.3s ease both;
}

.rt-hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 60px;
  padding-top: 40px;
  border-top: 1px solid var(--rt-border);
  animation: rt-fade-up 0.7s 0.4s ease both;
}

.rt-hero-stat-num {
  font-family: var(--rt-font-head);
  font-size: 2.2rem;
  font-weight: 800;
  background: var(--rt-grad-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.rt-hero-stat-label {
  font-size: 0.8rem;
  color: var(--rt-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: 4px;
}

/* ============================================================
   8. CARDS
   ============================================================ */

/* --- Service Card --- */
.rt-card {
  background: var(--rt-grad-card);
  border: 1px solid var(--rt-border);
  border-radius: var(--rt-r-lg);
  padding: 36px 28px;
  position: relative;
  overflow: hidden;
  transition: var(--rt-ease);
  height: 100%;
}

.rt-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--rt-grad-gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--rt-ease);
}

.rt-card:hover {
  border-color: rgba(245,197,24,0.3);
  transform: translateY(-6px);
  box-shadow: var(--rt-shadow-md), var(--rt-shadow-gold);
}

.rt-card:hover::before {
  transform: scaleX(1);
}

.rt-card-icon {
  width: 56px;
  height: 56px;
  background: var(--rt-gold-pale);
  border: 1px solid rgba(245,197,24,0.2);
  border-radius: var(--rt-r-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.5rem;
  transition: var(--rt-ease);
}

.rt-card:hover .rt-card-icon {
  background: var(--rt-gold);
  border-color: var(--rt-gold);
}

.rt-card:hover .rt-card-icon svg,
.rt-card:hover .rt-card-icon i {
  color: #000 !important;
  filter: none !important;
}

.rt-card-icon svg,
.rt-card-icon i {
  color: var(--rt-gold);
  font-size: 1.4rem;
  transition: var(--rt-ease);
}

.rt-card-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--rt-white);
  margin-bottom: 10px;
  font-family: var(--rt-font-head);
}

.rt-card-text {
  font-size: 0.9rem;
  color: var(--rt-text-2);
  line-height: 1.7;
  margin-bottom: 20px;
}

.rt-card-link {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--rt-gold);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--rt-ease);
  text-decoration: none;
}

.rt-card-link::after {
  content: '→';
  transition: var(--rt-ease);
}

.rt-card-link:hover {
  color: var(--rt-gold-light);
  gap: 10px;
}

/* --- Feature Box --- */
.rt-feature {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  padding: 24px;
  background: var(--rt-bg-3);
  border: 1px solid var(--rt-border);
  border-radius: var(--rt-r-md);
  transition: var(--rt-ease);
}

.rt-feature:hover {
  border-color: rgba(245,197,24,0.25);
  background: var(--rt-bg-4);
}

.rt-feature-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  background: var(--rt-gold-pale);
  border-radius: var(--rt-r-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--rt-gold);
}

.rt-feature-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--rt-white);
  margin-bottom: 6px;
}

.rt-feature-text {
  font-size: 0.875rem;
  color: var(--rt-text-muted);
  line-height: 1.6;
}

/* ============================================================
   9. SERVICES GRID
   ============================================================ */
.rt-services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

@media (max-width: 1024px) {
  .rt-services-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .rt-services-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   10. STATS COUNTER BAND
   ============================================================ */
.rt-stats-band {
  background: var(--rt-bg-3);
  border-top: 1px solid var(--rt-border);
  border-bottom: 1px solid var(--rt-border);
  padding: 56px 0;
}

.rt-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

@media (max-width: 768px) {
  .rt-stats-grid { grid-template-columns: repeat(2, 1fr); }
}

.rt-stat-num {
  font-family: var(--rt-font-head);
  font-size: clamp(2.5rem, 4vw, 3.5rem);
  font-weight: 800;
  background: var(--rt-grad-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 8px;
}

.rt-stat-label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--rt-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* ============================================================
   11. PRICING TABLES
   ============================================================ */
.rt-pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: start;
}

@media (max-width: 900px) {
  .rt-pricing-grid { grid-template-columns: 1fr; max-width: 440px; margin: 0 auto; }
}

.rt-pricing-card {
  background: var(--rt-grad-card);
  border: 1px solid var(--rt-border);
  border-radius: var(--rt-r-lg);
  padding: 40px 32px;
  position: relative;
  transition: var(--rt-ease);
}

.rt-pricing-card.featured {
  border-color: var(--rt-gold);
  background: linear-gradient(145deg, #1E1800 0%, #131000 100%);
  transform: scale(1.04);
  box-shadow: var(--rt-shadow-gold);
}

.rt-pricing-card.featured::before {
  content: 'PHỔ BIẾN NHẤT';
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--rt-grad-gold);
  color: #000;
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.15em;
  padding: 4px 16px;
  border-radius: var(--rt-r-full);
  white-space: nowrap;
}

.rt-pricing-badge {
  display: inline-block;
  padding: 4px 12px;
  background: var(--rt-gold-pale);
  border: 1px solid rgba(245,197,24,0.2);
  border-radius: var(--rt-r-full);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--rt-gold);
  margin-bottom: 16px;
}

.rt-pricing-name {
  font-family: var(--rt-font-head);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--rt-white);
  margin-bottom: 8px;
}

.rt-pricing-price {
  font-family: var(--rt-font-head);
  font-size: 2.8rem;
  font-weight: 900;
  background: var(--rt-grad-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin: 20px 0 4px;
}

.rt-pricing-period {
  font-size: 0.8rem;
  color: var(--rt-text-muted);
  margin-bottom: 24px;
}

.rt-pricing-divider {
  height: 1px;
  background: var(--rt-border);
  margin: 24px 0;
}

.rt-pricing-features {
  list-style: none;
  padding: 0;
  margin: 0 0 32px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.rt-pricing-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--rt-text-2);
}

.rt-pricing-features li::before {
  content: '✓';
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  background: var(--rt-gold-pale);
  border: 1px solid rgba(245,197,24,0.3);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  font-weight: 800;
  color: var(--rt-gold);
  line-height: 20px;
  text-align: center;
}

.rt-pricing-features li.disabled {
  opacity: 0.35;
  text-decoration: line-through;
}

.rt-pricing-features li.disabled::before {
  content: '✗';
  color: var(--rt-text-muted);
  background: transparent;
  border-color: var(--rt-border);
}

/* ============================================================
   12. TESTIMONIALS
   ============================================================ */
.rt-testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

@media (max-width: 900px) {
  .rt-testimonials-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
}

.rt-testimonial {
  background: var(--rt-grad-card);
  border: 1px solid var(--rt-border);
  border-radius: var(--rt-r-lg);
  padding: 32px 28px;
  position: relative;
  transition: var(--rt-ease);
}

.rt-testimonial:hover {
  border-color: rgba(245,197,24,0.2);
  transform: translateY(-4px);
}

.rt-testimonial-quote {
  font-size: 3rem;
  line-height: 1;
  background: var(--rt-grad-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 16px;
  opacity: 0.6;
}

.rt-testimonial-text {
  font-size: 0.95rem;
  color: var(--rt-text-2);
  line-height: 1.75;
  font-style: italic;
  margin-bottom: 24px;
}

.rt-testimonial-stars {
  color: var(--rt-gold);
  font-size: 0.85rem;
  letter-spacing: 2px;
  margin-bottom: 20px;
}

.rt-testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.rt-testimonial-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--rt-gold-dark);
}

.rt-testimonial-name {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--rt-white);
}

.rt-testimonial-role {
  font-size: 0.78rem;
  color: var(--rt-text-muted);
}

/* ============================================================
   13. PORTFOLIO GRID
   ============================================================ */
.rt-portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

@media (max-width: 900px) {
  .rt-portfolio-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .rt-portfolio-grid { grid-template-columns: 1fr; }
}

.rt-portfolio-item {
  border-radius: var(--rt-r-md);
  overflow: hidden;
  position: relative;
  aspect-ratio: 16/10;
  cursor: pointer;
}

.rt-portfolio-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--rt-ease-slow);
}

.rt-portfolio-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(8,8,8,0.95) 0%, rgba(8,8,8,0.4) 50%, transparent 100%);
  opacity: 0;
  transition: var(--rt-ease);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 24px;
}

.rt-portfolio-item:hover img { transform: scale(1.06); }
.rt-portfolio-item:hover .rt-portfolio-overlay { opacity: 1; }

.rt-portfolio-cat {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--rt-gold);
  margin-bottom: 6px;
}

.rt-portfolio-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--rt-white);
}

/* ============================================================
   14. BLOG POSTS
   ============================================================ */
.rt-blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

@media (max-width: 900px) {
  .rt-blog-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
}

.rt-blog-card {
  background: var(--rt-grad-card);
  border: 1px solid var(--rt-border);
  border-radius: var(--rt-r-lg);
  overflow: hidden;
  transition: var(--rt-ease);
}

.rt-blog-card:hover {
  border-color: rgba(245,197,24,0.2);
  transform: translateY(-4px);
  box-shadow: var(--rt-shadow-md);
}

.rt-blog-thumb {
  aspect-ratio: 16/9;
  overflow: hidden;
}

.rt-blog-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--rt-ease-slow);
}

.rt-blog-card:hover .rt-blog-thumb img { transform: scale(1.05); }

.rt-blog-content { padding: 24px; }

.rt-blog-tag {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--rt-gold);
  margin-bottom: 10px;
  display: block;
}

.rt-blog-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--rt-white);
  line-height: 1.4;
  margin-bottom: 10px;
  font-family: var(--rt-font-head);
}

.rt-blog-title:hover { color: var(--rt-gold); }

.rt-blog-excerpt {
  font-size: 0.85rem;
  color: var(--rt-text-muted);
  line-height: 1.65;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.rt-blog-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.78rem;
  color: var(--rt-text-muted);
  padding-top: 16px;
  border-top: 1px solid var(--rt-border);
}

/* ============================================================
   15. CTA BANNER
   ============================================================ */
.rt-cta {
  background: linear-gradient(135deg, #160E00 0%, #0D0900 50%, #160E00 100%);
  border-top: 1px solid rgba(245,197,24,0.15);
  border-bottom: 1px solid rgba(245,197,24,0.15);
  padding: 80px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.rt-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 80% at 50% 50%, rgba(245,197,24,0.07) 0%, transparent 70%);
  pointer-events: none;
}

.rt-cta-title {
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  margin-bottom: 16px;
}

.rt-cta-desc {
  font-size: 1.05rem;
  color: var(--rt-text-2);
  max-width: 520px;
  margin: 0 auto 36px;
}

/* ============================================================
   16. HEADER / NAV
   ============================================================ */
#brx-header,
.brxe-section.rt-header,
header.brx-header {
  background: rgba(8,8,8,0.92) !important;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--rt-border);
  position: sticky;
  top: 0;
  z-index: 999;
  transition: var(--rt-ease);
}

/* Nav links */
#brx-header a,
.brxe-nav-menu a {
  font-family: var(--rt-font-body);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--rt-text-2) !important;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  transition: var(--rt-ease);
}

#brx-header a:hover,
.brxe-nav-menu a:hover,
.brxe-nav-menu .current-menu-item > a {
  color: var(--rt-gold) !important;
}

/* ============================================================
   17. FOOTER
   ============================================================ */
.rt-footer {
  background: var(--rt-bg-0);
  border-top: 1px solid var(--rt-border);
  padding: 80px 0 0;
}

.rt-footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 60px;
}

@media (max-width: 900px) {
  .rt-footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
  .rt-footer-grid { grid-template-columns: 1fr; }
}

.rt-footer-title {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--rt-gold);
  margin-bottom: 20px;
}

.rt-footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.rt-footer-links a {
  font-size: 0.875rem;
  color: var(--rt-text-muted);
  transition: var(--rt-ease);
}

.rt-footer-links a:hover {
  color: var(--rt-gold);
  padding-left: 4px;
}

.rt-footer-bottom {
  border-top: 1px solid var(--rt-border);
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.rt-footer-copy {
  font-size: 0.8rem;
  color: var(--rt-text-muted);
}

.rt-footer-socials {
  display: flex;
  gap: 12px;
}

.rt-footer-social {
  width: 36px;
  height: 36px;
  background: var(--rt-bg-3);
  border: 1px solid var(--rt-border);
  border-radius: var(--rt-r-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  color: var(--rt-text-muted);
  transition: var(--rt-ease);
}

.rt-footer-social:hover {
  background: var(--rt-gold-pale);
  border-color: var(--rt-gold);
  color: var(--rt-gold) !important;
}

/* ============================================================
   18. FORMS
   ============================================================ */
.rt-form-group { margin-bottom: 20px; }

.rt-form-label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--rt-text-2);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.rt-input,
.rt-form input[type="text"],
.rt-form input[type="email"],
.rt-form input[type="tel"],
.rt-form textarea,
.brxe-form input,
.brxe-form textarea,
.brxe-form select {
  width: 100%;
  padding: 14px 18px;
  background: var(--rt-bg-3);
  border: 1.5px solid var(--rt-border);
  border-radius: var(--rt-r-sm);
  font-family: var(--rt-font-body);
  font-size: 0.9rem;
  color: var(--rt-text);
  outline: none;
  transition: var(--rt-ease);
  appearance: none;
}

.rt-input:focus,
.brxe-form input:focus,
.brxe-form textarea:focus {
  border-color: var(--rt-gold);
  background: var(--rt-bg-4);
  box-shadow: 0 0 0 3px var(--rt-gold-pale);
}

.rt-input::placeholder,
.brxe-form input::placeholder { color: var(--rt-text-muted); }

/* ============================================================
   19. PRODUCT PAGE - LANDING STYLE
   ============================================================ */
.rt-product-hero {
  background: var(--rt-grad-hero);
  padding: 120px 0 80px;
  position: relative;
  overflow: hidden;
}

.rt-product-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 14px;
  background: var(--rt-gold-pale);
  border: 1px solid rgba(245,197,24,0.3);
  border-radius: var(--rt-r-full);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--rt-gold);
  margin-bottom: 20px;
}

.rt-product-price-box {
  background: var(--rt-grad-card);
  border: 1px solid var(--rt-gold);
  border-radius: var(--rt-r-lg);
  padding: 32px;
  position: sticky;
  top: 100px;
}

.rt-product-price-current {
  font-family: var(--rt-font-head);
  font-size: 2.5rem;
  font-weight: 900;
  background: var(--rt-grad-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.rt-product-price-old {
  font-size: 1rem;
  color: var(--rt-text-muted);
  text-decoration: line-through;
  margin-left: 8px;
}

.rt-product-sale-badge {
  display: inline-block;
  background: #dc2626;
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: var(--rt-r-full);
  margin-left: 8px;
  vertical-align: middle;
}

/* ============================================================
   20. TAGS & BADGES
   ============================================================ */
.rt-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 12px;
  font-size: 0.72rem;
  font-weight: 600;
  border-radius: var(--rt-r-full);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.rt-tag-gold  { background: var(--rt-gold-pale); color: var(--rt-gold); border: 1px solid rgba(245,197,24,0.25); }
.rt-tag-green { background: rgba(16,185,129,0.1); color: #10b981; border: 1px solid rgba(16,185,129,0.25); }
.rt-tag-red   { background: rgba(239,68,68,0.1);  color: #ef4444; border: 1px solid rgba(239,68,68,0.25); }
.rt-tag-blue  { background: rgba(59,130,246,0.1); color: #3b82f6; border: 1px solid rgba(59,130,246,0.25); }

/* ============================================================
   21. ANIMATIONS
   ============================================================ */
@keyframes rt-fade-up {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes rt-fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes rt-pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(245,197,24,0.4); }
  50%       { opacity: 0.8; box-shadow: 0 0 0 6px rgba(245,197,24,0); }
}

@keyframes rt-shimmer {
  0%   { background-position: -200% center; }
  100% { background-position: 200% center; }
}

@keyframes rt-float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-10px); }
}

.rt-animate-up  { animation: rt-fade-up 0.65s ease both; }
.rt-animate-in  { animation: rt-fade-in 0.5s ease both; }
.rt-float       { animation: rt-float 4s ease-in-out infinite; }

/* Staggered children */
.rt-stagger > *:nth-child(1) { animation-delay: 0.05s; }
.rt-stagger > *:nth-child(2) { animation-delay: 0.12s; }
.rt-stagger > *:nth-child(3) { animation-delay: 0.19s; }
.rt-stagger > *:nth-child(4) { animation-delay: 0.26s; }
.rt-stagger > *:nth-child(5) { animation-delay: 0.33s; }
.rt-stagger > *:nth-child(6) { animation-delay: 0.40s; }

/* Gold shimmer text */
.rt-shimmer {
  background: linear-gradient(90deg, var(--rt-gold-dark) 0%, var(--rt-gold-light) 40%, var(--rt-gold-dark) 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: rt-shimmer 3s linear infinite;
}

/* ============================================================
   22. WALLET / PAYMENT SECTION
   ============================================================ */
.rt-wallet-card {
  background: var(--rt-grad-card);
  border: 1px solid var(--rt-border);
  border-radius: var(--rt-r-lg);
  padding: 32px;
}

.rt-wallet-balance {
  font-family: var(--rt-font-head);
  font-size: 2.5rem;
  font-weight: 800;
  background: var(--rt-grad-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.rt-payment-method {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  background: var(--rt-bg-3);
  border: 2px solid var(--rt-border);
  border-radius: var(--rt-r-md);
  cursor: pointer;
  transition: var(--rt-ease);
}

.rt-payment-method:hover,
.rt-payment-method.active {
  border-color: var(--rt-gold);
  background: var(--rt-gold-pale);
}

/* ============================================================
   23. UTILITIES
   ============================================================ */
.rt-container {
  width: 100%;
  max-width: var(--rt-container);
  margin: 0 auto;
  padding: 0 24px;
}

.rt-grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }
.rt-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.rt-grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

.rt-flex-center { display: flex; align-items: center; justify-content: center; }
.rt-flex-between { display: flex; align-items: center; justify-content: space-between; }

.rt-text-center { text-align: center; }
.rt-mt-auto { margin-top: auto; }
.rt-gap-4 { gap: 16px; }

/* Gold border left accent */
.rt-accent-left {
  border-left: 3px solid var(--rt-gold);
  padding-left: 16px;
}

/* Glowing card effect */
.rt-glow {
  box-shadow: 0 0 60px rgba(245,197,24,0.12), var(--rt-shadow-md);
}

/* Dark overlay for images */
.rt-img-overlay {
  position: relative;
}
.rt-img-overlay::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(8,8,8,0.7) 0%, transparent 60%);
  pointer-events: none;
}

/* ============================================================
   24. PROCESS NUMBER & FAQ
   ============================================================ */
.rt-process-number {
  font-family: var(--rt-font-head);
  font-size: 3.5rem;
  font-weight: 900;
  background: var(--rt-grad-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 12px;
  opacity: 0.9;
}

.rt-faq-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 800px;
  margin: 0 auto;
}

.rt-faq-item {
  cursor: pointer;
}

.rt-faq-question {
  font-size: 1.05rem !important;
  font-weight: 700 !important;
  color: var(--rt-white) !important;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.rt-faq-question::before {
  content: 'Q';
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  background: var(--rt-gold-pale);
  border: 1px solid rgba(245,197,24,0.3);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 800;
  color: var(--rt-gold);
  line-height: 28px;
  text-align: center;
}

.rt-faq-answer {
  padding-left: 38px;
}

/* ============================================================
   26. HEADER - 3 TẦNG
   ============================================================ */

/* === TẦNG 1: TOP BAR === */
.rt-topbar {
  background: var(--rt-bg-0);
  border-bottom: 1px solid var(--rt-border);
  padding: 8px 0;
  font-size: 0.78rem;
}

.rt-topbar .rt-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.rt-topbar-left {
  display: flex;
  align-items: center;
  gap: 20px;
}

.rt-topbar-item {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--rt-text-muted);
  font-size: 0.78rem;
  transition: var(--rt-ease);
}

.rt-topbar-item:hover { color: var(--rt-gold); }

.rt-topbar-item a {
  color: var(--rt-text-muted);
  text-decoration: none;
}

.rt-topbar-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.rt-topbar-social {
  display: flex;
  gap: 10px;
}

.rt-topbar-social a {
  width: 26px;
  height: 26px;
  background: var(--rt-bg-3);
  border: 1px solid var(--rt-border);
  border-radius: var(--rt-r-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  color: var(--rt-text-muted);
  transition: var(--rt-ease);
  text-decoration: none;
}

.rt-topbar-social a:hover {
  background: var(--rt-gold-pale);
  border-color: var(--rt-gold);
  color: var(--rt-gold);
}

.rt-topbar-btn {
  display: inline-flex;
  align-items: center;
  padding: 5px 14px;
  background: var(--rt-grad-gold);
  color: #000 !important;
  border-radius: var(--rt-r-full);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  transition: var(--rt-ease);
  white-space: nowrap;
}

.rt-topbar-btn:hover {
  filter: brightness(1.1);
  box-shadow: 0 2px 12px var(--rt-gold-glow);
}

/* === TẦNG 2: MAIN NAV === */
.rt-mainnav {
  background: rgba(8, 8, 8, 0.96);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--rt-border);
  padding: 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: var(--rt-ease);
}

.rt-mainnav .rt-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 24px;
}

/* Logo trong header */
.rt-mainnav .rt-logo {
  flex-shrink: 0;
  text-decoration: none;
}

.rt-mainnav .rt-logo-text {
  font-size: 2rem;
}

/* Nav links */
.rt-nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
  justify-content: center;
}

.rt-nav-item {
  position: relative;
}

.rt-nav-item a {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 14px;
  font-family: var(--rt-font-body);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--rt-text-2);
  text-decoration: none;
  border-radius: var(--rt-r-sm);
  transition: var(--rt-ease);
  white-space: nowrap;
}

.rt-nav-item a:hover,
.rt-nav-item.active a {
  color: var(--rt-gold);
  background: var(--rt-gold-pale);
}

/* Dropdown indicator */
.rt-nav-item a[href*="dich-vu"]::after,
.rt-nav-item a[href*="san-pham"]::after {
  content: '▾';
  font-size: 0.7rem;
  margin-left: 2px;
  opacity: 0.6;
}

.rt-mainnav-right {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

/* Hamburger (mobile) */
.rt-hamburger {
  display: none;
  cursor: pointer;
  padding: 8px;
  color: var(--rt-text-2);
  font-size: 1.3rem;
  border: 1px solid var(--rt-border);
  border-radius: var(--rt-r-sm);
  transition: var(--rt-ease);
}

.rt-hamburger:hover {
  color: var(--rt-gold);
  border-color: var(--rt-gold);
  background: var(--rt-gold-pale);
}

/* Scrolled state */
.rt-mainnav.scrolled {
  box-shadow: 0 4px 30px rgba(0,0,0,0.5);
}

/* === TẦNG 3: INFO BAR === */
.rt-infobar {
  background: linear-gradient(90deg, #0F0A00 0%, #1A1000 50%, #0F0A00 100%);
  border-top: 1px solid rgba(245,197,24,0.15);
  border-bottom: 1px solid rgba(245,197,24,0.15);
  padding: 10px 0;
}

.rt-infobar .rt-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.rt-infobar-phones {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.rt-infobar-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--rt-text-2);
  white-space: nowrap;
}

.rt-infobar-item a {
  color: var(--rt-gold);
  text-decoration: none;
  transition: var(--rt-ease);
  font-weight: 700;
}

.rt-infobar-item a:hover { color: var(--rt-gold-light); }

.rt-infobar-social {
  display: flex;
  gap: 8px;
}

.rt-infobar-social a {
  width: 30px;
  height: 30px;
  background: rgba(245,197,24,0.08);
  border: 1px solid rgba(245,197,24,0.2);
  border-radius: var(--rt-r-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  color: var(--rt-gold);
  text-decoration: none;
  transition: var(--rt-ease);
}

.rt-infobar-social a:hover {
  background: var(--rt-gold);
  color: #000;
}

/* Sticky scroll effect */
@keyframes rt-header-slide {
  from { transform: translateY(-100%); opacity: 0; }
  to   { transform: translateY(0); opacity: 1; }
}

/* Mobile header */
.rt-mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.95);
  z-index: 9999;
  flex-direction: column;
  padding: 80px 24px 40px;
  overflow-y: auto;
}

.rt-mobile-menu.open { display: flex; }

.rt-mobile-menu .rt-nav-item {
  border-bottom: 1px solid var(--rt-border);
}

.rt-mobile-menu .rt-nav-item a {
  font-size: 1.1rem;
  padding: 16px 0;
  text-transform: none;
  letter-spacing: 0;
}

.rt-mobile-close {
  position: absolute;
  top: 20px;
  right: 20px;
  background: none;
  border: none;
  color: var(--rt-gold);
  font-size: 1.8rem;
  cursor: pointer;
}

/* ============================================================
   RESPONSIVE OVERRIDES
   ============================================================ */
@media (max-width: 768px) {
  :root { --rt-section-py: 70px; }

  .rt-hero { padding: 100px 0 60px; }
  .rt-hero-stats { gap: 24px; }
  .rt-hero-buttons { flex-direction: column; align-items: flex-start; }

  .rt-grid-2,
  .rt-grid-3,
  .rt-grid-4 { grid-template-columns: 1fr; }

  .rt-blog-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
  .rt-testimonials-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }

  .rt-pricing-card.featured { transform: scale(1); }
}

@media (max-width: 480px) {
  .rt-btn,
  .rt-btn-outline { width: 100%; justify-content: center; }
}

/* ============================================================
   25. BRICKS BUILDER OVERRIDES
   ============================================================ */

/* Sections inherit dark background by default */
.brxe-section {
  background-color: var(--rt-bg-1);
}

/* Global Bricks text color fix */
.brxe-text-basic,
.brxe-text p {
  color: var(--rt-text-2);
}

/* Bricks heading color */
.brxe-heading h1,
.brxe-heading h2,
.brxe-heading h3,
.brxe-heading h4 {
  color: var(--rt-white);
}

/* Remove default white background */
#brx-content,
.brx-body {
  background-color: var(--rt-bg-1);
}