/* =========================================================
   Interior Works — Brand Website Design System
   ========================================================= */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* --- CSS Custom Properties --- */
:root {
  /* Primary Palette (from app icon) */
  --primary: #E8722A;
  --primary-light: #F4A261;
  --primary-dark: #C45D1E;
  --primary-glow: rgba(232, 114, 42, 0.3);

  /* Backgrounds */
  --bg-dark: #0B0D14;
  --bg-surface: #12141D;
  --bg-card: rgba(255, 255, 255, 0.04);
  --bg-card-hover: rgba(255, 255, 255, 0.08);
  --bg-card-border: rgba(255, 255, 255, 0.08);

  /* Text */
  --text-primary: #F5F5F7;
  --text-secondary: #A1A1AA;
  --text-muted: #6B7280;

  /* Accents */
  --accent-teal: #2DD4BF;
  --accent-coral: #FB7185;
  --accent-purple: #A78BFA;
  --accent-blue: #60A5FA;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #E8722A 0%, #F4A261 100%);
  --gradient-hero: radial-gradient(ellipse at 20% 50%, rgba(232,114,42,0.15) 0%, transparent 50%),
                   radial-gradient(ellipse at 80% 20%, rgba(244,162,97,0.1) 0%, transparent 50%),
                   radial-gradient(ellipse at 50% 80%, rgba(45,212,191,0.05) 0%, transparent 50%);
  --gradient-card: linear-gradient(135deg, rgba(255,255,255,0.06) 0%, rgba(255,255,255,0.02) 100%);

  /* 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;

  /* Borders */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 24px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 48px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 40px rgba(232,114,42,0.2);

  /* 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);

  /* Layout */
  --max-width: 1200px;
  --nav-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-secondary);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
}

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

a:hover {
  color: var(--primary);
}

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

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--text-primary);
  font-weight: 700;
  line-height: 1.2;
}

h1 { font-size: clamp(2.2rem, 5vw, 3.5rem); font-weight: 800; }
h2 { font-size: clamp(1.8rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.2rem, 3vw, 1.5rem); }
h4 { font-size: 1.15rem; }

p {
  max-width: 68ch;
}

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

.section {
  padding: var(--space-4xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section-header h2 {
  margin-bottom: var(--space-md);
}

.section-header p {
  margin: 0 auto;
  color: var(--text-secondary);
  font-size: 1.1rem;
}

.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  background: rgba(232, 114, 42, 0.12);
  color: var(--primary-light);
  border: 1px solid rgba(232, 114, 42, 0.2);
}

/* --- Scroll Reveal Animation --- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.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; }
.reveal-delay-5 { transition-delay: 0.5s; }

/* =========================================================
   NAVIGATION
   ========================================================= */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  transition: background var(--transition-base), box-shadow var(--transition-base), backdrop-filter var(--transition-base);
}

.navbar.scrolled {
  background: rgba(11, 13, 20, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 rgba(255,255,255,0.06);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--text-primary);
}

.nav-brand img {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
}

.nav-brand span {
  letter-spacing: -0.02em;
}

.nav-brand .brand-accent {
  color: var(--primary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
  padding: var(--space-xs) 0;
  position: relative;
  transition: color var(--transition-fast);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: 1px;
  transition: width var(--transition-base);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-cta {
  padding: 10px 24px !important;
  background: var(--gradient-primary);
  color: var(--text-primary) !important;
  border-radius: var(--radius-full);
  font-weight: 600 !important;
  font-size: 0.9rem !important;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast) !important;
}

.nav-cta::after {
  display: none !important;
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-glow);
}

/* Mobile Toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-fast);
}

.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* =========================================================
   HERO SECTION
   ========================================================= */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-height);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-hero);
  z-index: 0;
}

/* Ambient orbs */
.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.5;
  animation: orbFloat 8s ease-in-out infinite;
}

.hero-orb-1 {
  width: 400px;
  height: 400px;
  background: rgba(232, 114, 42, 0.15);
  top: 10%;
  left: -5%;
  animation-delay: 0s;
}

.hero-orb-2 {
  width: 300px;
  height: 300px;
  background: rgba(244, 162, 97, 0.1);
  top: 60%;
  right: -5%;
  animation-delay: -3s;
}

.hero-orb-3 {
  width: 200px;
  height: 200px;
  background: rgba(45, 212, 191, 0.08);
  bottom: 10%;
  left: 30%;
  animation-delay: -5s;
}

@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(20px, -20px) scale(1.05); }
  50% { transform: translate(-10px, 15px) scale(0.95); }
  75% { transform: translate(15px, 10px) scale(1.02); }
}

.hero .container {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.hero-content {
  max-width: 560px;
}

.hero-badge {
  margin-bottom: var(--space-lg);
}

.hero h1 {
  margin-bottom: var(--space-lg);
  letter-spacing: -0.03em;
}

.hero-description {
  font-size: 1.15rem;
  line-height: 1.8;
  margin-bottom: var(--space-2xl);
  color: var(--text-secondary);
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 14px 32px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  text-decoration: none;
}

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(232, 114, 42, 0.35);
  color: #fff;
}

.btn-secondary {
  background: rgba(255,255,255,0.06);
  color: var(--text-primary);
  border: 1px solid rgba(255,255,255,0.1);
}

.btn-secondary:hover {
  background: rgba(255,255,255,0.1);
  transform: translateY(-2px);
  color: var(--text-primary);
}

.btn-icon {
  font-size: 1.3rem;
}

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.hero-phone {
  position: relative;
  width: 280px;
  height: 560px;
  background: var(--bg-surface);
  border-radius: 36px;
  border: 2px solid rgba(255,255,255,0.1);
  overflow: hidden;
  box-shadow: var(--shadow-lg), 0 0 80px rgba(232,114,42,0.15);
  animation: phoneFloat 6s ease-in-out infinite;
}

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

@keyframes phoneFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.hero-phone-glow {
  position: absolute;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(232,114,42,0.2) 0%, transparent 70%);
  border-radius: 50%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: -1;
  animation: glowPulse 4s ease-in-out infinite;
}

@keyframes glowPulse {
  0%, 100% { opacity: 0.6; transform: translate(-50%, -50%) scale(1); }
  50% { opacity: 1; transform: translate(-50%, -50%) scale(1.15); }
}

/* =========================================================
   STATS BAR
   ========================================================= */
.stats-bar {
  background: var(--bg-surface);
  border-top: 1px solid rgba(255,255,255,0.05);
  border-bottom: 1px solid rgba(255,255,255,0.05);
  padding: var(--space-2xl) 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
  text-align: center;
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.stat-number {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.stat-number .accent {
  color: var(--primary);
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* =========================================================
   FEATURE CARDS (Home)
   ========================================================= */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.feature-card {
  position: relative;
  background: var(--gradient-card);
  border: 1px solid var(--bg-card-border);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(232, 114, 42, 0.2);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  font-size: 1.5rem;
  margin-bottom: var(--space-lg);
  background: rgba(232, 114, 42, 0.1);
  color: var(--primary);
}

.feature-card h3 {
  margin-bottom: var(--space-sm);
  font-size: 1.15rem;
}

.feature-card p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* Color variants */
.feature-card.teal .feature-icon { background: rgba(45,212,191,0.1); color: var(--accent-teal); }
.feature-card.coral .feature-icon { background: rgba(251,113,133,0.1); color: var(--accent-coral); }
.feature-card.purple .feature-icon { background: rgba(167,139,250,0.1); color: var(--accent-purple); }
.feature-card.blue .feature-icon { background: rgba(96,165,250,0.1); color: var(--accent-blue); }

/* =========================================================
   HOW IT WORKS
   ========================================================= */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-2xl);
  position: relative;
}

.steps-grid::before {
  content: '';
  position: absolute;
  top: 48px;
  left: 15%;
  right: 15%;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(232,114,42,0.3), transparent);
}

.step-item {
  text-align: center;
  position: relative;
}

.step-number {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 800;
  margin: 0 auto var(--space-lg);
  background: var(--bg-surface);
  border: 2px solid var(--primary);
  color: var(--primary);
  position: relative;
  z-index: 1;
}

.step-item h3 {
  margin-bottom: var(--space-sm);
}

.step-item p {
  margin: 0 auto;
  font-size: 0.95rem;
}

/* =========================================================
   TESTIMONIALS
   ========================================================= */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.testimonial-card {
  background: var(--gradient-card);
  border: 1px solid var(--bg-card-border);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  position: relative;
}

.testimonial-card .quote-icon {
  font-size: 2.5rem;
  color: var(--primary);
  opacity: 0.4;
  margin-bottom: var(--space-md);
  line-height: 1;
}

.testimonial-card p {
  font-style: italic;
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: var(--space-lg);
  color: var(--text-secondary);
}

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

.testimonial-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
  color: #fff;
}

.testimonial-info strong {
  display: block;
  color: var(--text-primary);
  font-size: 0.95rem;
}

.testimonial-info span {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* =========================================================
   CTA BANNER
   ========================================================= */
.cta-section {
  padding: var(--space-4xl) 0;
}

.cta-banner {
  background: var(--gradient-primary);
  border-radius: var(--radius-xl);
  padding: var(--space-4xl) var(--space-3xl);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 50%, rgba(255,255,255,0.15) 0%, transparent 50%);
}

.cta-banner h2 {
  margin-bottom: var(--space-md);
  position: relative;
  z-index: 1;
}

.cta-banner p {
  margin: 0 auto var(--space-2xl);
  font-size: 1.1rem;
  color: rgba(255,255,255,0.85);
  position: relative;
  z-index: 1;
}

.cta-banner .btn {
  background: #fff;
  color: var(--primary-dark);
  position: relative;
  z-index: 1;
}

.cta-banner .btn:hover {
  box-shadow: 0 8px 32px rgba(0,0,0,0.2);
  color: var(--primary-dark);
}

/* =========================================================
   FOOTER
   ========================================================= */
.footer {
  background: var(--bg-surface);
  border-top: 1px solid rgba(255,255,255,0.05);
  padding: var(--space-4xl) 0 var(--space-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-3xl);
  margin-bottom: var(--space-3xl);
}

.footer-brand {
  max-width: 320px;
}

.footer-brand .nav-brand {
  margin-bottom: var(--space-lg);
}

.footer-brand p {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: var(--space-lg);
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-col a {
  color: var(--text-secondary);
  font-size: 0.95rem;
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.footer-col a:hover {
  color: var(--primary-light);
  padding-left: 4px;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-xl);
  border-top: 1px solid rgba(255,255,255,0.06);
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-bottom-links {
  display: flex;
  gap: var(--space-lg);
}

.footer-bottom-links a {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-bottom-links a:hover {
  color: var(--primary-light);
}

/* =========================================================
   FEATURES PAGE (Detailed)
   ========================================================= */
.page-hero {
  padding: calc(var(--nav-height) + var(--space-4xl)) 0 var(--space-3xl);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-hero);
  z-index: 0;
}

.page-hero .container {
  position: relative;
  z-index: 1;
}

.page-hero h1 {
  margin-bottom: var(--space-md);
}

.page-hero p {
  margin: 0 auto;
  font-size: 1.15rem;
  max-width: 600px;
}

/* Alternating Feature Rows */
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
  align-items: center;
  padding: var(--space-3xl) 0;
}

.feature-row:nth-child(even) .feature-row-content {
  order: 2;
}

.feature-row:nth-child(even) .feature-row-visual {
  order: 1;
}

.feature-row-content h3 {
  font-size: 1.6rem;
  margin-bottom: var(--space-md);
}

.feature-row-content .feature-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
  line-height: 1.8;
}

.feature-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.feature-list-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
}

.feature-list-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(232, 114, 42, 0.15);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  margin-top: 2px;
}

.feature-list-item p {
  font-size: 0.95rem;
  line-height: 1.6;
}

.feature-row-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.feature-visual-card {
  width: 100%;
  max-width: 420px;
  aspect-ratio: 4/3;
  background: var(--gradient-card);
  border: 1px solid var(--bg-card-border);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  position: relative;
  overflow: hidden;
}

.feature-visual-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 100%, rgba(232,114,42,0.08) 0%, transparent 60%);
}

/* =========================================================
   GALLERY
   ========================================================= */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-xl);
}

.gallery-item {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  aspect-ratio: 9/16;
  background: var(--bg-surface);
  border: 1px solid var(--bg-card-border);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.gallery-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

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

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

.gallery-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-xl) var(--space-lg);
  background: linear-gradient(transparent, rgba(0,0,0,0.85));
  color: var(--text-primary);
}

.gallery-caption h4 {
  font-size: 1rem;
  margin-bottom: var(--space-xs);
}

.gallery-caption p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0, 0, 0, 0.95);
  display: none;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.lightbox.active {
  display: flex;
  opacity: 1;
}

.lightbox-content {
  max-width: 90vw;
  max-height: 90vh;
  position: relative;
}

.lightbox-content img {
  max-width: 100%;
  max-height: 85vh;
  border-radius: var(--radius-md);
  object-fit: contain;
}

.lightbox-close {
  position: absolute;
  top: var(--space-xl);
  right: var(--space-xl);
  background: rgba(255,255,255,0.1);
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-fast);
  z-index: 2001;
}

.lightbox-close:hover {
  background: rgba(255,255,255,0.2);
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255,255,255,0.1);
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-fast);
}

.lightbox-nav:hover {
  background: rgba(255,255,255,0.2);
}

.lightbox-prev { left: var(--space-xl); }
.lightbox-next { right: var(--space-xl); }

.lightbox-caption {
  text-align: center;
  padding: var(--space-lg) 0;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* =========================================================
   USER MANUAL
   ========================================================= */
.manual-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: var(--space-3xl);
  align-items: flex-start;
}

.manual-toc {
  position: sticky;
  top: calc(var(--nav-height) + var(--space-xl));
  background: var(--gradient-card);
  border: 1px solid var(--bg-card-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}

.manual-toc h3 {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: var(--space-lg);
}

.manual-toc ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.manual-toc a {
  display: block;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition-fast);
}

.manual-toc a:hover,
.manual-toc a.active {
  background: rgba(232, 114, 42, 0.1);
  color: var(--primary-light);
}

.manual-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

/* Accordion */
.accordion-item {
  background: var(--gradient-card);
  border: 1px solid var(--bg-card-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--transition-base);
}

.accordion-item.active {
  border-color: rgba(232, 114, 42, 0.3);
}

.accordion-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-xl) var(--space-xl);
  cursor: pointer;
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  color: var(--text-primary);
  font-size: 1.05rem;
  font-weight: 600;
  font-family: inherit;
  transition: color var(--transition-fast);
}

.accordion-header:hover {
  color: var(--primary-light);
}

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

.accordion-header-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: rgba(232, 114, 42, 0.1);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.accordion-chevron {
  transition: transform var(--transition-base);
  font-size: 1.2rem;
  color: var(--text-muted);
}

.accordion-item.active .accordion-chevron {
  transform: rotate(180deg);
}

.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.accordion-body-inner {
  padding: 0 var(--space-xl) var(--space-xl);
  padding-left: calc(var(--space-xl) + 36px + var(--space-md));
}

.accordion-body-inner p {
  margin-bottom: var(--space-md);
  font-size: 0.95rem;
  line-height: 1.8;
}

.accordion-body-inner ol {
  list-style: decimal;
  padding-left: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.accordion-body-inner ol li {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

.accordion-body-inner .tip-box {
  background: rgba(45, 212, 191, 0.08);
  border: 1px solid rgba(45, 212, 191, 0.2);
  border-radius: var(--radius-sm);
  padding: var(--space-md) var(--space-lg);
  font-size: 0.9rem;
  color: var(--accent-teal);
  margin-top: var(--space-md);
}

/* =========================================================
   LEGAL PAGES (Privacy, Terms, Copyright)
   ========================================================= */
.legal-content {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--space-3xl) 0;
}

.legal-content h2 {
  font-size: 1.4rem;
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.legal-content h2:first-child {
  margin-top: 0;
}

.legal-content p {
  margin-bottom: var(--space-md);
  font-size: 0.95rem;
  line-height: 1.8;
}

.legal-content ul {
  list-style: disc;
  padding-left: var(--space-xl);
  margin-bottom: var(--space-lg);
}

.legal-content ul li {
  margin-bottom: var(--space-sm);
  font-size: 0.95rem;
  line-height: 1.7;
}

.legal-content strong {
  color: var(--text-primary);
}

.legal-meta {
  margin-top: var(--space-2xl);
  padding-top: var(--space-xl);
  border-top: 1px solid rgba(255,255,255,0.06);
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* =========================================================
   SITEMAP PAGE
   ========================================================= */
.sitemap-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-xl);
}

.sitemap-card {
  background: var(--gradient-card);
  border: 1px solid var(--bg-card-border);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
}

.sitemap-card h3 {
  font-size: 1.1rem;
  margin-bottom: var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.sitemap-card h3 span {
  color: var(--primary);
}

.sitemap-card ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.sitemap-card a {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--text-secondary);
  font-size: 0.95rem;
  padding: var(--space-xs) 0;
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.sitemap-card a::before {
  content: '→';
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.sitemap-card a:hover {
  color: var(--primary-light);
  padding-left: 4px;
}

.sitemap-card a:hover::before {
  color: var(--primary);
}

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-content {
    max-width: 100%;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-visual {
    order: -1;
  }

  .hero-phone {
    width: 220px;
    height: 440px;
  }

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

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl) var(--space-md);
  }

  .feature-row {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

  .feature-row:nth-child(even) .feature-row-content,
  .feature-row:nth-child(even) .feature-row-visual {
    order: unset;
  }

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

  .manual-layout {
    grid-template-columns: 1fr;
  }

  .manual-toc {
    position: static;
  }
}

@media (max-width: 768px) {
  :root {
    --space-4xl: 3.5rem;
  }

  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    height: calc(100vh - var(--nav-height));
    background: rgba(11, 13, 20, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-xl);
    transform: translateX(100%);
    transition: transform var(--transition-base);
  }

  .nav-links.open {
    transform: translateX(0);
  }

  .nav-links a {
    font-size: 1.2rem;
  }

  .nav-toggle {
    display: flex;
  }

  .hero {
    min-height: auto;
    padding-top: calc(var(--nav-height) + var(--space-2xl));
    padding-bottom: var(--space-3xl);
  }

  .hero-phone {
    width: 180px;
    height: 360px;
  }

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

  .steps-grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .steps-grid::before {
    display: none;
  }

  .testimonials-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }

  .gallery-grid {
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  }

  .cta-banner {
    padding: var(--space-3xl) var(--space-xl);
  }

  .lightbox-nav {
    width: 40px;
    height: 40px;
    font-size: 1.2rem;
  }

  .lightbox-prev { left: var(--space-sm); }
  .lightbox-next { right: var(--space-sm); }
}

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

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

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

/* =========================================================
   FEEDBACK BUTTON & MODAL
   ========================================================= */
.feedback-btn {
  position: fixed;
  bottom: var(--space-2xl);
  right: var(--space-2xl);
  background: var(--gradient-primary);
  color: #fff;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  border: none;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.feedback-btn:hover {
  transform: translateY(-4px) scale(1.05);
  box-shadow: 0 12px 24px rgba(232, 114, 42, 0.4);
}

.feedback-modal {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0, 0, 0, 0.8);
  display: none;
  align-items: center;
  justify-content: center;
  opacity: 0;
  backdrop-filter: blur(4px);
  transition: opacity var(--transition-base);
}

.feedback-modal.active {
  display: flex;
  opacity: 1;
}

.feedback-modal-content {
  background: var(--bg-surface);
  border: 1px solid var(--bg-card-border);
  border-radius: var(--radius-lg);
  width: 90%;
  max-width: 450px;
  padding: var(--space-2xl);
  position: relative;
  transform: translateY(20px);
  transition: transform var(--transition-base);
}

.feedback-modal.active .feedback-modal-content {
  transform: translateY(0);
}

.feedback-close {
  position: absolute;
  top: var(--space-lg);
  right: var(--space-lg);
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 1.5rem;
  cursor: pointer;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.feedback-close:hover {
  background: rgba(255,255,255,0.05);
  color: var(--text-primary);
}

.feedback-modal-content h3 {
  margin-bottom: var(--space-md);
  font-size: 1.4rem;
}

.feedback-modal-content p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: var(--space-xl);
}

.feedback-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.feedback-form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.feedback-form-group label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.feedback-form-group input,
.feedback-form-group textarea,
.feedback-form-group select {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  padding: var(--space-md);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.95rem;
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.feedback-form-group input:focus,
.feedback-form-group textarea:focus,
.feedback-form-group select:focus {
  outline: none;
  border-color: var(--primary);
  background: rgba(255, 255, 255, 0.05);
}

.feedback-form-group select option {
  background: var(--bg-surface);
  color: var(--text-primary);
}

.feedback-form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.feedback-submit {
  margin-top: var(--space-sm);
  width: 100%;
}

@media (max-width: 768px) {
  .feedback-btn {
    bottom: var(--space-xl);
    right: var(--space-xl);
    width: 48px;
    height: 48px;
  }
}