/* ============================================
   SOFA HOÀNG GIA - Landing Page Styles
   Design: Dark Luxury · Gold Accents · Premium Furniture
   Inspired by: noithattanlapphat.com
   ============================================ */

/* --- CSS Custom Properties (Design Tokens) --- */
:root {
  /* Core Colors - Dark Luxury Palette */
  --color-bg-dark: #0F0A06;
  --color-bg-section: #18120B;
  --color-bg-card: #1E1610;
  --color-bg-card-hover: #261D14;
  --color-white: #FFFFFF;
  --color-cream: #FDF5E6;
  --color-cream-soft: #F5E6CC;

  /* Gold / Champagne Accent */
  --color-gold: #D4A542;
  --color-gold-light: #F0D078;
  --color-gold-dark: #A67C2E;
  --color-gold-soft: #FDD869;
  --color-gold-text: #EFC85A;

  /* Brand Blue (from logo) */
  --color-brand-blue: #0A3D91;
  --color-brand-blue-light: #1A5BC4;

  /* Functional */
  --color-text-primary: #F5E6CC;
  --color-text-secondary: #B8A48C;
  --color-text-muted: #7A6B5A;
  --color-border: #3D2E1F;
  --color-border-light: #6A4113;
  --color-success: #4CAF50;
  --color-zalo: #0068FF;

  /* Gradients */
  --gradient-gold: linear-gradient(135deg, #D4A542 0%, #F0D078 50%, #D4A542 100%);
  --gradient-gold-text: linear-gradient(180deg, #F6EDB7, #E4BB5F);
  --gradient-hero: linear-gradient(135deg, rgba(15, 10, 6, 0.7) 0%, rgba(15, 10, 6, 0.3) 100%);
  --gradient-dark: linear-gradient(135deg, #0F0A06 0%, #18120B 100%);
  --gradient-card: linear-gradient(135deg, rgba(212, 165, 66, 0.08) 0%, rgba(212, 165, 66, 0.02) 100%);

  /* Typography */
  --font-heading: 'Cormorant Garamond', 'Playfair Display', 'Georgia', serif;
  --font-body: 'Be Vietnam Pro', 'Inter', 'Segoe UI', sans-serif;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 24px;
  --radius-full: 50%;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 16px 60px rgba(0, 0, 0, 0.6);
  --shadow-gold: 0 4px 25px rgba(212, 165, 66, 0.25);
  --shadow-glow: 0 0 30px rgba(212, 165, 66, 0.15);

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275);

  /* Layout */
  --max-width: 1200px;
  --header-height: 70px;
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  color: var(--color-text-primary);
  background-color: var(--color-bg-dark);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition-fast);
}

ul,
ol {
  list-style: none;
}

/* --- Utility Classes --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.section-padding {
  padding: var(--space-3xl) 0;
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 4vw, 2.8rem);
  font-weight: 600;
  color: var(--color-gold-soft);
  text-align: center;
  margin-bottom: var(--space-sm);
  line-height: 1.3;
  letter-spacing: 0.5px;
}

.section-subtitle {
  font-size: clamp(0.9rem, 2vw, 1rem);
  color: var(--color-text-secondary);
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--space-2xl);
  line-height: 1.7;
}

.gold-line {
  display: block;
  width: 80px;
  height: 2px;
  background: var(--gradient-gold);
  margin: var(--space-md) auto var(--space-lg);
  border-radius: 2px;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 14px 32px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition-base);
  white-space: nowrap;
  letter-spacing: 0.3px;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent);
  transition: var(--transition-slow);
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background: var(--gradient-gold);
  color: var(--color-bg-dark);
  box-shadow: var(--shadow-gold);
  font-weight: 700;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 30px rgba(212, 165, 66, 0.45);
}

.btn-outline {
  background: transparent;
  color: var(--color-gold);
  border: 1.5px solid var(--color-gold);
}

.btn-outline:hover {
  background: var(--color-gold);
  color: var(--color-bg-dark);
  transform: translateY(-2px);
}

.btn-white {
  background: var(--color-white);
  color: var(--color-bg-dark);
  box-shadow: var(--shadow-md);
}

.btn-white:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-zalo {
  background: var(--color-zalo);
  color: var(--color-white);
  box-shadow: 0 4px 20px rgba(0, 104, 255, 0.3);
}

.btn-zalo:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 30px rgba(0, 104, 255, 0.45);
}

.btn-icon {
  font-size: 1.1rem;
}

/* --- Header / Top Bar --- */
.top-bar {
  background: #000000;
  color: var(--color-text-secondary);
  padding: var(--space-sm) 0;
  font-size: 0.8rem;
  border-bottom: 1px solid var(--color-border);
}

.top-bar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.top-bar-left {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.top-bar-item {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  opacity: 0.9;
}

.top-bar-item i {
  color: var(--color-gold);
}

.header {
  background: rgba(0, 0, 0, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 3px solid var(--color-border-light);
  transition: var(--transition-base);
}

.header.scrolled {
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.6);
}

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: var(--header-height);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.logo-img {
  height: 50px;
  width: auto;
}

.logo-icon {
  width: 42px;
  height: 42px;
  background: var(--color-brand-blue);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-white);
}

.logo-text {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-gold-soft);
  line-height: 1.2;
}

.logo-text small {
  display: block;
  font-family: var(--font-body);
  font-size: 0.65rem;
  font-weight: 400;
  color: var(--color-text-muted);
  letter-spacing: 1.5px;
}

.header-cta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.header-phone {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 700;
  color: var(--color-gold-soft);
  font-size: 1rem;
}

.header-phone i {
  width: 36px;
  height: 36px;
  background: var(--color-gold);
  color: var(--color-bg-dark);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  animation: pulse-ring 2s infinite;
}

@keyframes pulse-ring {
  0% {
    box-shadow: 0 0 0 0 rgba(212, 165, 66, 0.6);
  }

  70% {
    box-shadow: 0 0 0 12px rgba(212, 165, 66, 0);
  }

  100% {
    box-shadow: 0 0 0 0 rgba(212, 165, 66, 0);
  }
}

/* --- Hero Section --- */
.hero {
  position: relative;
  min-height: 85vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15, 10, 6, 0.8) 0%, rgba(15, 10, 6, 0.4) 60%, rgba(15, 10, 6, 0.7) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 700px;
  padding: var(--space-4xl) 0;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  background: rgba(212, 165, 66, 0.12);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(212, 165, 66, 0.3);
  padding: 8px 20px;
  border-radius: var(--radius-sm);
  color: var(--color-gold-light);
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: var(--space-lg);
  animation: fadeInUp 0.8s ease-out;
}

.hero-badge i {
  color: var(--color-gold);
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  color: var(--color-white);
  line-height: 1.2;
  margin-bottom: var(--space-lg);
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

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

.hero-desc {
  font-size: clamp(0.95rem, 2vw, 1.1rem);
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.8;
  margin-bottom: var(--space-xl);
  max-width: 550px;
  animation: fadeInUp 0.8s ease-out 0.4s both;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
  animation: fadeInUp 0.8s ease-out 0.6s both;
}

.hero-stats {
  display: flex;
  gap: var(--space-2xl);
  padding-top: var(--space-xl);
  border-top: 1px solid rgba(212, 165, 66, 0.2);
  animation: fadeInUp 0.8s ease-out 0.8s both;
}

.hero-stat {
  text-align: center;
}

.hero-stat-number {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-gold-soft);
  line-height: 1;
}

.hero-stat-label {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.5);
  margin-top: var(--space-xs);
}

/* --- Pain Points Section --- */
.pain-points {
  background: var(--color-bg-section);
  border-top: 1px solid var(--color-border);
}

.pain-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

.pain-card {
  display: flex;
  align-items: flex-start;
  gap: var(--space-lg);
  padding: var(--space-xl);
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  transition: var(--transition-base);
}

.pain-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
  border-color: var(--color-gold-dark);
}

.pain-icon {
  width: 56px;
  height: 56px;
  min-width: 56px;
  background: rgba(212, 165, 66, 0.1);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  transition: var(--transition-base);
}

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

.pain-card h3 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: var(--space-xs);
  color: var(--color-gold-soft);
}

.pain-card p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* --- Solution Section --- */
.solution {
  background: var(--color-bg-dark);
  position: relative;
  border-top: 1px solid var(--color-border);
}

.solution-wrapper {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

.solution-image {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  position: relative;
  border: 2px solid var(--color-border);
}

.solution-image img {
  width: 100%;
  transition: var(--transition-slow);
}

.solution-image:hover img {
  transform: scale(1.03);
}

.solution-image-badge {
  position: absolute;
  bottom: var(--space-lg);
  left: var(--space-lg);
  background: rgba(15, 10, 6, 0.9);
  backdrop-filter: blur(10px);
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-light);
}

.solution-image-badge strong {
  display: block;
  font-family: var(--font-heading);
  font-size: 1.1rem;
  color: var(--color-gold-soft);
}

.solution-image-badge span {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
}

.solution-content h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 3.5vw, 2.4rem);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: var(--space-md);
  color: var(--color-text-primary);
}

.solution-content h2 .highlight {
  color: var(--color-gold-soft);
}

.solution-content>p {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
  font-size: 1rem;
  line-height: 1.7;
}

.solution-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.solution-feature {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: var(--transition-base);
}

.solution-feature:hover {
  border-color: var(--color-gold-dark);
  transform: translateX(4px);
  box-shadow: var(--shadow-glow);
}

.solution-feature-icon {
  width: 44px;
  height: 44px;
  min-width: 44px;
  background: var(--gradient-gold);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-bg-dark);
  font-size: 1.1rem;
}

.solution-feature span {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-gold-soft);
}

/* --- Benefits Section --- */
.benefits {
  background: var(--color-bg-section);
  position: relative;
  overflow: hidden;
  border-top: 1px solid var(--color-border);
}

.benefits::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(212, 165, 66, 0.06) 0%, transparent 70%);
  border-radius: var(--radius-full);
}

.benefits .section-title {
  color: var(--color-gold-soft);
}

.benefits .section-subtitle {
  color: var(--color-text-secondary);
}

.benefits-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  position: relative;
  z-index: 1;
}

.benefit-card {
  text-align: center;
  padding: var(--space-xl) var(--space-lg);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: var(--transition-base);
}

.benefit-card:hover {
  background: var(--color-bg-card-hover);
  border-color: var(--color-gold-dark);
  transform: translateY(-6px);
  box-shadow: var(--shadow-glow);
}

.benefit-icon {
  width: 70px;
  height: 70px;
  background: rgba(212, 165, 66, 0.1);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-lg);
  font-size: 1.6rem;
  transition: var(--transition-spring);
}

.benefit-card:hover .benefit-icon {
  background: var(--gradient-gold);
  border-color: transparent;
  transform: scale(1.1) rotate(-5deg);
}

.benefit-card h3 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
  color: var(--color-gold-soft);
}

.benefit-card p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* --- Gallery Section --- */
.gallery {
  background: var(--color-bg-dark);
  border-top: 1px solid var(--color-border);
}

.gallery-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

.gallery-item {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  aspect-ratio: 4 / 3;
  border: 2px solid var(--color-border);
  transition: var(--transition-base);
}

.gallery-item:hover {
  border-color: var(--color-gold-dark);
}

.gallery-item.featured {
  aspect-ratio: 16 / 10;
}

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

.gallery-item:hover img {
  transform: scale(1.08);
}

.gallery-item-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(15, 10, 6, 0.85) 0%, transparent 60%);
  display: flex;
  align-items: flex-end;
  padding: var(--space-lg);
  opacity: 0;
  transition: var(--transition-base);
}

.gallery-item:hover .gallery-item-overlay {
  opacity: 1;
}

.gallery-item-label {
  color: var(--color-white);
  font-weight: 600;
  font-size: 0.95rem;
}

.gallery-item-label small {
  display: block;
  font-weight: 400;
  font-size: 0.8rem;
  color: var(--color-gold-light);
  margin-top: 2px;
}

/* --- Social Proof Section --- */
.social-proof {
  background: var(--color-bg-section);
  border-top: 1px solid var(--color-border);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

.testimonial-card {
  padding: var(--space-xl);
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  position: relative;
  transition: var(--transition-base);
}

.testimonial-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
  border-color: var(--color-gold-dark);
}

.testimonial-stars {
  display: flex;
  gap: 2px;
  margin-bottom: var(--space-md);
}

.testimonial-stars i {
  color: var(--color-gold);
  font-size: 0.9rem;
}

.testimonial-text {
  font-style: italic;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
  position: relative;
  padding-left: var(--space-lg);
}

.testimonial-text::before {
  content: '"';
  font-family: var(--font-heading);
  font-size: 3.5rem;
  color: var(--color-gold);
  opacity: 0.3;
  position: absolute;
  top: -15px;
  left: -5px;
  line-height: 1;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

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

.testimonial-info h4 {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-gold-soft);
}

.testimonial-info span {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.social-proof-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  margin-top: var(--space-2xl);
  padding-top: var(--space-2xl);
  border-top: 1px solid var(--color-border);
}

.sp-stat {
  text-align: center;
  padding: var(--space-lg);
}

.sp-stat-number {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--color-gold-soft);
}

.sp-stat-label {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin-top: var(--space-xs);
}

/* --- Commitment Section --- */
.commitment {
  background: var(--color-bg-dark);
  border-top: 1px solid var(--color-border);
}

.commitment-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

.commitment-card {
  display: flex;
  align-items: flex-start;
  gap: var(--space-lg);
  padding: var(--space-xl);
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  transition: var(--transition-base);
}

.commitment-card:hover {
  border-color: var(--color-gold-dark);
  box-shadow: var(--shadow-glow);
}

.commitment-icon {
  width: 60px;
  height: 60px;
  min-width: 60px;
  background: rgba(212, 165, 66, 0.1);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--color-gold);
  transition: var(--transition-base);
}

.commitment-card:hover .commitment-icon {
  background: var(--gradient-gold);
  color: var(--color-bg-dark);
  border-color: transparent;
}

.commitment-card h3 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: var(--space-xs);
  color: var(--color-gold-soft);
}

.commitment-card p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* --- FAQ Section --- */
.faq {
  background: var(--color-bg-section);
  border-top: 1px solid var(--color-border);
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
  overflow: hidden;
  transition: var(--transition-base);
  background: var(--color-bg-card);
}

.faq-item:hover {
  border-color: var(--color-gold-dark);
}

.faq-item.active {
  border-color: var(--color-gold);
  box-shadow: var(--shadow-glow);
}

.faq-question {
  width: 100%;
  padding: var(--space-lg) var(--space-xl);
  background: transparent;
  border: none;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-gold-soft);
  text-align: left;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
  transition: var(--transition-base);
}

.faq-question:hover {
  color: var(--color-gold-light);
}

.faq-question i {
  font-size: 0.8rem;
  color: var(--color-gold);
  transition: var(--transition-base);
  min-width: 20px;
  text-align: center;
}

.faq-item.active .faq-question i {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.faq-answer-content {
  padding: 0 var(--space-xl) var(--space-lg);
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* --- CTA Final Section --- */
.cta-final {
  background: #000000;
  position: relative;
  overflow: hidden;
  text-align: center;
  border-top: 1px solid var(--color-border);
}

.cta-final::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(212, 165, 66, 0.06) 0%, transparent 70%);
  border-radius: var(--radius-full);
}

.cta-final-content {
  position: relative;
  z-index: 1;
}

.cta-final h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 4vw, 2.8rem);
  font-weight: 700;
  color: var(--color-gold-soft);
  margin-bottom: var(--space-md);
  line-height: 1.3;
}

.cta-final p {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  max-width: 550px;
  margin: 0 auto var(--space-xl);
}

.cta-final-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
}

.cta-final-phone {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  color: var(--color-gold-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
}

.cta-final-phone i {
  animation: pulse-ring 2s infinite;
  background: var(--color-gold);
  color: var(--color-bg-dark);
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

/* --- Lead Form --- */
.lead-form {
  background: var(--color-bg-dark);
  border-top: 1px solid var(--color-border);
}

.lead-form-wrapper {
  max-width: 600px;
  margin: 0 auto;
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  padding: var(--space-2xl);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border-light);
}

.lead-form-wrapper .form-group {
  margin-bottom: var(--space-lg);
}

.lead-form-wrapper label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-gold-soft);
  margin-bottom: var(--space-sm);
}

.lead-form-wrapper input,
.lead-form-wrapper select,
.lead-form-wrapper textarea {
  width: 100%;
  padding: 14px 18px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-text-primary);
  background: var(--color-bg-section);
  transition: var(--transition-fast);
  outline: none;
}

.lead-form-wrapper input:focus,
.lead-form-wrapper select:focus,
.lead-form-wrapper textarea:focus {
  border-color: var(--color-gold);
  box-shadow: 0 0 0 3px rgba(212, 165, 66, 0.15);
  background: var(--color-bg-dark);
}

.lead-form-wrapper input::placeholder {
  color: var(--color-text-muted);
}

.lead-form-wrapper select option {
  background: var(--color-bg-section);
  color: var(--color-text-primary);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.lead-form-wrapper .btn {
  width: 100%;
  padding: 16px;
  font-size: 1rem;
}

.form-note {
  text-align: center;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: var(--space-md);
}

.form-note i {
  color: var(--color-success);
}

/* --- Footer --- */
.footer {
  background: #000000;
  color: var(--color-text-secondary);
  padding: var(--space-2xl) 0 var(--space-lg);
  border-top: 1px solid var(--color-border-light);
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid var(--color-border);
}

.footer-brand .logo-text {
  color: var(--color-gold-soft);
  margin-bottom: var(--space-md);
}

.footer-brand p {
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--color-text-muted);
  max-width: 350px;
}

.footer h4 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-gold-soft);
  margin-bottom: var(--space-md);
}

.footer-links li {
  margin-bottom: var(--space-sm);
}

.footer-links a {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.footer-links a:hover {
  color: var(--color-gold-soft);
  transform: translateX(4px);
}

.footer-links a i {
  color: var(--color-gold-dark);
  font-size: 0.8rem;
  width: 16px;
}

.footer-bottom {
  text-align: center;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* --- Sticky CTA (Mobile) --- */
.sticky-cta {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 999;
  background: rgba(0, 0, 0, 0.95);
  backdrop-filter: blur(10px);
  border-top: 2px solid var(--color-gold-dark);
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.5);
  padding: var(--space-sm) var(--space-md);
  display: flex;
  gap: var(--space-sm);
}

.sticky-cta .btn {
  flex: 1;
  padding: 12px;
  font-size: 0.8rem;
  border-radius: var(--radius-sm);
}

/* --- Floating Buttons (Desktop) --- */
.floating-buttons {
  position: fixed;
  right: 20px;
  bottom: 100px;
  z-index: 998;
  display: none;
  flex-direction: column;
  gap: var(--space-md);
}

.float-btn {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: white;
  box-shadow: var(--shadow-lg);
  transition: var(--transition-base);
  cursor: pointer;
  border: none;
  position: relative;
}

.float-btn:hover {
  transform: scale(1.1);
}

.float-btn-zalo {
  background: var(--color-zalo);
}

.float-btn-phone {
  background: var(--color-gold);
  color: var(--color-bg-dark);
  animation: pulse-ring 2s infinite;
}

.float-btn-tooltip {
  position: absolute;
  right: 100%;
  top: 50%;
  transform: translateY(-50%);
  margin-right: 10px;
  padding: 6px 12px;
  background: var(--color-bg-dark);
  color: var(--color-gold-soft);
  font-size: 0.75rem;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition-fast);
  border: 1px solid var(--color-border);
}

.float-btn:hover .float-btn-tooltip {
  opacity: 1;
}

/* --- Scroll Animations --- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-10px);
  }
}

/* --- Responsive Design --- */

/* Tablet */
@media (min-width: 600px) {
  .pain-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .benefits-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .gallery-item.featured {
    grid-column: span 2;
  }

  .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .commitment-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .social-proof-stats {
    grid-template-columns: repeat(4, 1fr);
  }

  .footer-content {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Desktop */
@media (min-width: 992px) {
  .section-padding {
    padding: var(--space-4xl) 0;
  }

  .top-bar {
    display: block;
  }

  .pain-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .solution-wrapper {
    grid-template-columns: 1fr 1fr;
  }

  .benefits-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .gallery-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .testimonials-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .commitment-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .footer-content {
    grid-template-columns: 1.5fr 1fr 1fr;
  }

  .floating-buttons {
    display: flex;
  }

  .sticky-cta {
    display: none;
  }
}

/* Large Desktop */
@media (min-width: 1200px) {
  .pain-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .benefits-grid {
    grid-template-columns: repeat(5, 1fr);
  }
}

/* Small screens adjustment */
@media (max-width: 599px) {
  .top-bar {
    display: none;
  }

  .header-phone span {
    display: none;
  }

  .hero {
    min-height: 80vh;
  }

  .hero-stats {
    gap: var(--space-lg);
  }

  .hero-stat-number {
    font-size: 1.4rem;
  }

  .solution-features {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  body {
    padding-bottom: 70px;
  }
}

/* --- Accessibility --- */
@media (prefers-reduced-motion: reduce) {

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}

/* Focus Styles */
:focus-visible {
  outline: 2px solid var(--color-gold);
  outline-offset: 2px;
}

/* Screen Reader Only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* --- Print Styles --- */
@media print {

  .sticky-cta,
  .floating-buttons,
  .header {
    display: none !important;
  }
}