/* ============================================
   KAIROS - Landing Page Styles
   Premium Dark Theme with Gold Accents
   World-Class Design v2.0
   ============================================ */

/* CSS Variables */
:root {
  --bg-primary: #0F1021;
  --bg-secondary: #141527;
  --bg-tertiary: #1A1B30;
  --bg-card: rgba(255, 255, 255, 0.04);
  --bg-glass: rgba(255, 255, 255, 0.06);
  --bg-glass-hover: rgba(255, 255, 255, 0.1);
  --gold: #D4AF37;
  --gold-light: #F0D060;
  --gold-dark: #B8960C;
  --gold-glow: rgba(212, 175, 55, 0.15);
  --text-primary: #FFFFFF;
  --text-secondary: rgba(255, 255, 255, 0.65);
  --text-muted: rgba(255, 255, 255, 0.35);
  --border: rgba(255, 255, 255, 0.08);
  --border-gold: rgba(212, 175, 55, 0.25);
  --gradient-gold: linear-gradient(135deg, #D4AF37, #F0D060);
  --gradient-gold-reverse: linear-gradient(135deg, #F0D060, #D4AF37);
  --gradient-hero: linear-gradient(160deg, #0F1021 0%, #1A1040 40%, #0F2030 70%, #0F1021 100%);
  --shadow-card: 0 8px 40px rgba(0, 0, 0, 0.4);
  --shadow-gold: 0 8px 40px rgba(212, 175, 55, 0.2);
  --shadow-gold-intense: 0 12px 60px rgba(212, 175, 55, 0.3);
  --radius: 20px;
  --radius-sm: 10px;
  --radius-lg: 28px;
  --radius-xl: 36px;
  --font: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

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

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

img { max-width: 100%; height: auto; }
ul { list-style: none; }
svg { display: block; }

/* ============================================
   Particles Background
   ============================================ */

.particles {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: var(--gold);
  border-radius: 50%;
  opacity: 0;
  animation: particleFloat 20s infinite;
}

.particle:nth-child(1) { left: 10%; top: 20%; animation-delay: 0s; animation-duration: 18s; }
.particle:nth-child(2) { left: 25%; top: 60%; animation-delay: 3s; animation-duration: 22s; }
.particle:nth-child(3) { left: 45%; top: 10%; animation-delay: 6s; animation-duration: 16s; }
.particle:nth-child(4) { left: 65%; top: 40%; animation-delay: 2s; animation-duration: 24s; }
.particle:nth-child(5) { left: 80%; top: 70%; animation-delay: 5s; animation-duration: 20s; }
.particle:nth-child(6) { left: 90%; top: 30%; animation-delay: 8s; animation-duration: 19s; }
.particle:nth-child(7) { left: 35%; top: 80%; animation-delay: 4s; animation-duration: 21s; }
.particle:nth-child(8) { left: 55%; top: 50%; animation-delay: 7s; animation-duration: 17s; }

@keyframes particleFloat {
  0%   { opacity: 0; transform: translateY(0) scale(0); }
  10%  { opacity: 0.4; transform: translateY(-20px) scale(1); }
  50%  { opacity: 0.15; transform: translateY(-120px) scale(0.6); }
  90%  { opacity: 0.3; transform: translateY(-220px) scale(0.8); }
  100% { opacity: 0; transform: translateY(-280px) scale(0); }
}

/* ============================================
   Animations
   ============================================ */

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(40px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}

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

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

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

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

@keyframes countUp {
  from { opacity: 0; transform: scale(0.5); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-60px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(60px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes muscleGlow {
  0%, 100% { filter: drop-shadow(0 0 4px rgba(212, 175, 55, 0.4)); }
  50% { filter: drop-shadow(0 0 14px rgba(212, 175, 55, 0.9)); }
}

@keyframes badgePulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(212, 175, 55, 0.4); }
  50% { box-shadow: 0 0 0 8px rgba(212, 175, 55, 0); }
}

@keyframes dotPulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.5); opacity: 0.5; }
}

@keyframes glowBorder {
  0%, 100% { border-color: rgba(212, 175, 55, 0.3); box-shadow: 0 0 30px rgba(212, 175, 55, 0.1); }
  50% { border-color: rgba(212, 175, 55, 0.6); box-shadow: 0 0 50px rgba(212, 175, 55, 0.2); }
}

/* Scroll-triggered animations */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   Typography
   ============================================ */

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

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

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-tag {
  display: inline-block;
  background: rgba(212, 175, 55, 0.1);
  border: 1px solid rgba(212, 175, 55, 0.2);
  color: var(--gold);
  padding: 6px 20px;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 1.25rem;
}

.section-title {
  font-size: clamp(2.25rem, 5vw, 3.75rem);
  text-align: center;
  margin-bottom: 1.25rem;
  letter-spacing: -0.03em;
}

.section-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  text-align: center;
  max-width: 580px;
  margin: 0 auto;
  line-height: 1.8;
}

/* ============================================
   Layout
   ============================================ */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
}

section {
  padding: 120px 0;
  position: relative;
  z-index: 1;
}

/* Section Dividers */
.section-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), rgba(212,175,55,0.15), var(--border), transparent);
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

/* ============================================
   Glassmorphism Card
   ============================================ */

.glass-card {
  background: var(--bg-glass);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all var(--transition);
}

.glass-card:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-gold);
  transform: translateY(-6px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3), 0 8px 30px rgba(212, 175, 55, 0.1);
}

/* ============================================
   Buttons
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-family: var(--font);
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn-lg {
  padding: 18px 40px;
  font-size: 1.05rem;
}

.btn-gold {
  background: var(--gradient-gold);
  color: #0F1021;
}

.btn-gold::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transition: 0.5s;
}

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

.btn-gold:hover {
  box-shadow: var(--shadow-gold-intense);
  transform: translateY(-3px);
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--gold);
  color: var(--gold);
}

.btn-outline:hover {
  background: var(--gold);
  color: var(--bg-primary);
  box-shadow: var(--shadow-gold);
  transform: translateY(-3px);
}

/* ============================================
   Language Dropdown
   ============================================ */

.lang-dropdown {
  position: relative;
}

.lang-btn {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  color: white;
  padding: 8px 18px;
  border-radius: 10px;
  cursor: pointer;
  font-size: 14px;
  font-family: var(--font);
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 6px;
}

.lang-btn:hover {
  background: rgba(255,255,255,0.12);
  border-color: rgba(255,255,255,0.25);
}

.lang-menu {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: #1E1F32;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 14px;
  padding: 8px;
  min-width: 190px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.6), 0 0 1px rgba(255,255,255,0.1);
  z-index: 1000;
  backdrop-filter: blur(20px);
}

.lang-menu-up {
  top: auto;
  bottom: calc(100% + 8px);
}

.lang-dropdown:hover .lang-menu,
.lang-dropdown:focus-within .lang-menu {
  display: block;
  animation: fadeIn 0.2s ease;
}

.lang-item {
  display: block;
  padding: 10px 16px;
  color: rgba(255,255,255,0.75);
  text-decoration: none;
  border-radius: 8px;
  font-size: 14px;
  font-family: var(--font);
  transition: var(--transition-fast);
}

.lang-item:hover {
  background: rgba(212,175,55,0.12);
  color: var(--gold);
}

.lang-item.active {
  color: var(--gold);
  font-weight: 600;
  background: rgba(212,175,55,0.08);
}

/* ============================================
   HEADER / NAV
   ============================================ */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 18px 0;
  background: rgba(15, 16, 33, 0.6);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  animation: fadeInDown 0.6s ease;
  transition: all 0.4s ease;
}

.header-scrolled {
  padding: 12px 0;
  background: rgba(15, 16, 33, 0.92);
  border-bottom-color: var(--border);
  box-shadow: 0 4px 30px rgba(0,0,0,0.3);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 1.5rem;
  letter-spacing: 0.5px;
}

.logo-icon {
  width: 44px;
  height: 44px;
  background: var(--gradient-gold);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: var(--bg-primary);
  font-size: 1.3rem;
  box-shadow: 0 4px 15px rgba(212, 175, 55, 0.3);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 40px;
}

.nav-links a {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  padding: 4px 0;
}

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

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

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

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

.hamburger {
  display: none;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
  padding: 5px;
  background: none;
  border: none;
}

.hamburger span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition);
  border-radius: 2px;
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.hamburger.active span:nth-child(2) {
  opacity: 0;
}
.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* ============================================
   HERO
   ============================================ */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 100px;
  padding-bottom: 60px;
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  top: 10%;
  left: 15%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(212, 175, 55, 0.08) 0%, transparent 70%);
  pointer-events: none;
  animation: gradientShift 20s ease infinite;
  background-size: 200% 200%;
}

.hero-glow--secondary {
  top: 30%;
  left: auto;
  right: 10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(80, 50, 160, 0.08) 0%, transparent 70%);
  animation-delay: -10s;
}

.hero-content {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 80px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-text {
  animation: fadeInUp 0.8s ease;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(212, 175, 55, 0.08);
  border: 1px solid rgba(212, 175, 55, 0.2);
  padding: 10px 24px;
  border-radius: 50px;
  font-size: 0.85rem;
  color: var(--gold);
  margin-bottom: 32px;
  font-weight: 500;
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  background: var(--gold);
  border-radius: 50%;
  animation: dotPulse 2s ease-in-out infinite;
}

.hero h1 {
  font-size: clamp(3rem, 6vw, 4.75rem);
  line-height: 1.05;
  margin-bottom: 20px;
  letter-spacing: -0.04em;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-muted);
  margin-bottom: 12px;
  font-style: italic;
  letter-spacing: 0.5px;
}

.hero-description {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 40px;
  max-width: 500px;
  line-height: 1.8;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.store-badges {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.store-badge {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
  padding: 14px 28px;
  border-radius: 14px;
  transition: var(--transition);
}

.store-badge:hover {
  border-color: var(--border-gold);
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.2);
}

.store-badge-lg {
  padding: 18px 36px;
}

.store-badge-icon {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  color: var(--text-primary);
}

.store-badge-text {
  display: flex;
  flex-direction: column;
}

.store-badge-label {
  font-size: 0.65rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 600;
}

.store-badge-name {
  font-size: 1.05rem;
  font-weight: 700;
}

/* Phone Mockup - Realistic */
.hero-visual {
  display: flex;
  justify-content: center;
  position: relative;
  animation: fadeIn 1s ease 0.3s both;
}

.phone-reflection {
  position: absolute;
  bottom: -40px;
  left: 50%;
  transform: translateX(-50%);
  width: 200px;
  height: 60px;
  background: radial-gradient(ellipse, rgba(212,175,55,0.1) 0%, transparent 70%);
  filter: blur(20px);
}

.phone-mockup {
  width: 290px;
  height: 600px;
  background: linear-gradient(145deg, #2a2a2a, #1a1a1a);
  border-radius: 44px;
  border: 2px solid #3a3a3a;
  padding: 10px;
  position: relative;
  box-shadow:
    0 30px 80px rgba(0, 0, 0, 0.6),
    0 0 60px rgba(212, 175, 55, 0.08),
    inset 0 1px 0 rgba(255,255,255,0.1);
  animation: float 7s ease-in-out infinite;
}

.phone-notch {
  width: 130px;
  height: 30px;
  background: #1a1a1a;
  border-radius: 0 0 18px 18px;
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: center;
}

.phone-camera {
  width: 10px;
  height: 10px;
  background: #2a2a2a;
  border-radius: 50%;
  border: 2px solid #333;
}

.phone-screen {
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, #12131F 0%, #1A1040 50%, #0F2030 100%);
  border-radius: 36px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  padding: 0;
}

.phone-status-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 24px 8px;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-primary);
}

.phone-status-icons {
  display: flex;
  gap: 4px;
  align-items: center;
}

.status-signal, .status-wifi, .status-battery {
  display: block;
  background: var(--text-primary);
  border-radius: 1px;
}

.status-signal { width: 14px; height: 8px; border-radius: 2px; opacity: 0.7; }
.status-wifi { width: 12px; height: 8px; border-radius: 2px; opacity: 0.7; }
.status-battery { width: 18px; height: 9px; border-radius: 2px; opacity: 0.7; }

.phone-screen-header {
  padding: 8px 24px 16px;
}

.phone-screen-greeting {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.phone-screen-date {
  font-size: 0.65rem;
  color: var(--text-muted);
}

.phone-health-score {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 8px 0 16px;
}

.phone-score-ring {
  width: 80px;
  height: 80px;
  position: relative;
}

.phone-score-ring svg {
  width: 100%;
  height: 100%;
}

.phone-score-value {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 1.4rem;
  font-weight: 800;
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.phone-score-label {
  font-size: 0.6rem;
  color: var(--text-muted);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.phone-screen-modules {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  padding: 0 16px;
  flex: 1;
}

.phone-module {
  background: rgba(255, 255, 255, 0.06);
  border-radius: 12px;
  padding: 10px 4px;
  text-align: center;
  font-size: 0.55rem;
  color: var(--text-secondary);
  border: 1px solid rgba(255,255,255,0.04);
}

.phone-module-icon {
  font-size: 1.2rem;
  margin-bottom: 3px;
  display: block;
}

.phone-bottom-bar {
  display: flex;
  justify-content: space-around;
  align-items: center;
  padding: 12px 16px 16px;
  margin-top: auto;
}

.phone-bar-item {
  font-size: 1rem;
  opacity: 0.4;
}

.phone-bar-active {
  opacity: 1;
}

.phone-bar-center {
  width: 36px;
  height: 36px;
  background: var(--gradient-gold);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--bg-primary);
  opacity: 1;
  -webkit-text-fill-color: var(--bg-primary);
}

/* ============================================
   FEATURES
   ============================================ */

#features {
  background: var(--bg-secondary);
}

.features-categories {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-category {
  padding: 36px;
}

.feature-category-icon-wrap {
  width: 64px;
  height: 64px;
  background: rgba(212, 175, 55, 0.08);
  border: 1px solid rgba(212, 175, 55, 0.15);
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  transition: var(--transition);
}

.feature-category:hover .feature-category-icon-wrap {
  background: rgba(212, 175, 55, 0.15);
  border-color: rgba(212, 175, 55, 0.3);
  transform: scale(1.05);
}

.feature-category-icon {
  font-size: 2rem;
  display: block;
}

.feature-category h3 {
  font-size: 1.3rem;
  margin-bottom: 8px;
}

.feature-category-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.feature-category-modules {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.module-tag {
  background: rgba(212, 175, 55, 0.08);
  border: 1px solid rgba(212, 175, 55, 0.15);
  padding: 5px 14px;
  border-radius: 20px;
  font-size: 0.78rem;
  color: var(--gold-light);
  transition: var(--transition-fast);
}

.module-tag:hover {
  background: rgba(212, 175, 55, 0.15);
}

/* ============================================
   AI FEATURES
   ============================================ */

#ai-features {
  background: var(--bg-primary);
  position: relative;
}

#ai-features::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(212, 175, 55, 0.04) 0%, transparent 70%);
  pointer-events: none;
}

.ai-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
  position: relative;
  z-index: 1;
}

.ai-card {
  padding: 36px;
  display: flex;
  gap: 24px;
  align-items: flex-start;
}

.ai-card-icon {
  flex-shrink: 0;
  width: 60px;
  height: 60px;
  background: rgba(212, 175, 55, 0.08);
  border: 1px solid rgba(212, 175, 55, 0.15);
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  transition: var(--transition);
}

.ai-card:hover .ai-card-icon {
  background: rgba(212, 175, 55, 0.15);
  border-color: rgba(212, 175, 55, 0.3);
  transform: scale(1.08);
}

.ai-card h3 {
  font-size: 1.15rem;
  margin-bottom: 10px;
}

.ai-card p {
  color: var(--text-secondary);
  font-size: 0.93rem;
  line-height: 1.7;
}

/* ============================================
   3D MUSCLE MAP
   ============================================ */

#muscle-map {
  background: var(--bg-secondary);
  overflow: hidden;
}

.muscle-map-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.muscle-map-text h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 20px;
}

.muscle-map-text p {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: 32px;
  line-height: 1.8;
}

.muscle-map-features {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.muscle-map-feature {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 1rem;
  color: var(--text-secondary);
}

.feature-check {
  color: var(--gold);
  font-size: 1.1rem;
  width: 28px;
  height: 28px;
  background: rgba(212, 175, 55, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* Body SVG Outline */
.muscle-visual {
  display: flex;
  justify-content: center;
  position: relative;
}

.body-outline {
  width: 200px;
  height: 400px;
  position: relative;
  animation: float 6s ease-in-out infinite;
}

.body-outline svg {
  width: 100%;
  height: 100%;
}

.muscle-group {
  position: absolute;
  border-radius: 50%;
  background: var(--gold);
  opacity: 0.5;
  animation: muscleGlow 3s ease-in-out infinite;
}

.muscle-group.chest { width: 50px; height: 30px; top: 25%; left: 37%; border-radius: 40%; }
.muscle-group.shoulders-l { width: 20px; height: 20px; top: 22%; left: 22%; }
.muscle-group.shoulders-r { width: 20px; height: 20px; top: 22%; right: 22%; }
.muscle-group.biceps-l { width: 16px; height: 30px; top: 30%; left: 16%; border-radius: 40%; animation-delay: 0.5s; }
.muscle-group.biceps-r { width: 16px; height: 30px; top: 30%; right: 16%; border-radius: 40%; animation-delay: 0.5s; }
.muscle-group.abs { width: 40px; height: 50px; top: 35%; left: 40%; border-radius: 30%; animation-delay: 1s; }
.muscle-group.quads-l { width: 24px; height: 40px; top: 55%; left: 32%; border-radius: 40%; animation-delay: 1.5s; }
.muscle-group.quads-r { width: 24px; height: 40px; top: 55%; right: 32%; border-radius: 40%; animation-delay: 1.5s; }

/* ============================================
   PRICING
   ============================================ */

#pricing {
  background: var(--bg-primary);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
}

.pricing-card {
  padding: 44px 36px;
  text-align: center;
  position: relative;
  display: flex;
  flex-direction: column;
}

.pricing-card.featured {
  border-color: var(--gold);
  background: rgba(212, 175, 55, 0.04);
  transform: scale(1.06);
  animation: glowBorder 4s ease-in-out infinite;
  z-index: 2;
}

.pricing-card.featured:hover {
  transform: scale(1.08);
}

.pricing-badge {
  position: absolute;
  top: -15px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-gold);
  color: var(--bg-primary);
  padding: 7px 28px;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 700;
  white-space: nowrap;
  animation: badgePulse 2s ease-in-out infinite;
  display: flex;
  align-items: center;
  gap: 6px;
}

.badge-star {
  font-size: 0.9rem;
}

.pricing-plan {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
  font-weight: 600;
}

.pricing-price {
  font-size: 3.5rem;
  font-weight: 800;
  margin-bottom: 4px;
  letter-spacing: -0.03em;
}

.pricing-card.featured .pricing-price {
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.pricing-price .currency {
  font-size: 1.5rem;
  vertical-align: super;
}

.pricing-period {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 8px;
}

.pricing-usd {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 36px;
}

.pricing-features {
  text-align: left;
  margin-bottom: 36px;
  flex-grow: 1;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  font-size: 0.93rem;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
}

.pricing-features li:last-child {
  border-bottom: none;
}

.pricing-features .check {
  color: var(--gold);
  font-size: 1rem;
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  background: rgba(212, 175, 55, 0.1);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
}

.pricing-features .cross {
  color: var(--text-muted);
  font-size: 1rem;
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
}

/* ============================================
   STATS
   ============================================ */

#stats {
  background: var(--bg-secondary);
  padding: 100px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.stat-item {
  text-align: center;
  padding: 40px 24px;
}

.stat-number {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 800;
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
  letter-spacing: -0.03em;
}

.stat-number.counted {
  animation: countUp 0.8s ease both;
}

.stat-item:nth-child(2) .stat-number.counted { animation-delay: 0.15s; }
.stat-item:nth-child(3) .stat-number.counted { animation-delay: 0.3s; }
.stat-item:nth-child(4) .stat-number.counted { animation-delay: 0.45s; }
.stat-item:nth-child(5) .stat-number.counted { animation-delay: 0.6s; }

.stat-label {
  color: var(--text-secondary);
  font-size: 1rem;
  font-weight: 500;
}

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

/* ============================================
   SCIENCE / BİLİMSEL YAKLAŞIM
   ============================================ */

#science {
  background: var(--bg-secondary);
  position: relative;
}

#science::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(212, 175, 55, 0.03) 0%, transparent 70%);
  pointer-events: none;
}

.science-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  position: relative;
  z-index: 1;
  margin-bottom: 48px;
}

.science-card {
  padding: 32px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.science-card-icon {
  font-size: 2rem;
  margin-bottom: 4px;
}

.science-card-source {
  display: inline-block;
  background: rgba(212, 175, 55, 0.1);
  border: 1px solid rgba(212, 175, 55, 0.2);
  color: var(--gold);
  padding: 4px 16px;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.science-card h3 {
  font-size: 1.1rem;
  margin-bottom: 4px;
}

.science-card p {
  color: var(--text-secondary);
  font-size: 0.85rem;
  line-height: 1.7;
}

.science-disclaimer {
  text-align: center;
  position: relative;
  z-index: 1;
  max-width: 700px;
  margin: 0 auto;
  padding: 24px 32px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-sm);
}

.science-disclaimer p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ============================================
   TESTIMONIALS
   ============================================ */

#testimonials {
  background: var(--bg-primary);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.testimonial-card {
  padding: 36px;
}

.testimonial-stars {
  color: var(--gold);
  font-size: 1.1rem;
  margin-bottom: 20px;
  letter-spacing: 3px;
}

.testimonial-text {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 24px;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 14px;
}

.testimonial-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--gradient-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--bg-primary);
  font-size: 1rem;
  box-shadow: 0 4px 15px rgba(212, 175, 55, 0.25);
}

.testimonial-name {
  font-weight: 600;
  font-size: 0.95rem;
}

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

/* ============================================
   DOWNLOAD CTA
   ============================================ */

#download {
  background: var(--bg-secondary);
  text-align: center;
  position: relative;
  overflow: hidden;
}

#download::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 900px;
  height: 900px;
  background: radial-gradient(circle, rgba(212, 175, 55, 0.06) 0%, transparent 60%);
  pointer-events: none;
}

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

.download-content h2 {
  font-size: clamp(2.25rem, 5vw, 3.75rem);
  margin-bottom: 20px;
}

.download-content p {
  color: var(--text-secondary);
  font-size: 1.2rem;
  margin-bottom: 48px;
  line-height: 1.8;
}

.download-stores {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 56px;
  flex-wrap: wrap;
}

.qr-placeholder {
  width: 160px;
  height: 160px;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.8rem;
  transition: var(--transition);
}

.qr-placeholder:hover {
  border-color: var(--border-gold);
}

.qr-placeholder-icon {
  font-size: 2.5rem;
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border);
  padding: 80px 0 40px;
  position: relative;
  z-index: 1;
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand p {
  color: var(--text-secondary);
  margin-top: 20px;
  font-size: 0.93rem;
  max-width: 300px;
  line-height: 1.7;
}

.footer-column h4 {
  font-size: 1rem;
  margin-bottom: 20px;
  color: var(--gold);
  font-weight: 600;
}

.footer-column a {
  display: block;
  color: var(--text-secondary);
  padding: 7px 0;
  font-size: 0.9rem;
}

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

.social-links {
  display: flex;
  gap: 12px;
  margin-top: 24px;
}

.social-link {
  width: 48px;
  height: 48px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition);
}

.social-link svg {
  width: 20px;
  height: 20px;
}

.social-link:hover {
  background: var(--gold);
  color: var(--bg-primary);
  border-color: var(--gold);
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(212, 175, 55, 0.3);
}

.footer-lang {
  display: inline-block;
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-bottom p {
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* ============================================
   RESPONSIVE
   ============================================ */

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

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

  .stats-grid-5 {
    grid-template-columns: repeat(3, 1fr);
  }

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

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

  .pricing-card:last-child {
    grid-column: span 2;
    max-width: 420px;
    margin: 0 auto;
  }

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

  .hero-content {
    gap: 50px;
  }
}

@media (max-width: 768px) {
  section {
    padding: 80px 0;
  }

  .container {
    padding: 0 20px;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(15, 16, 33, 0.97);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    border-bottom: 1px solid var(--border);
  }

  .nav-links.nav-open {
    display: flex;
  }

  .hamburger {
    display: flex;
  }

  .nav-right .btn-gold {
    display: none;
  }

  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 48px;
  }

  .hero-description {
    margin: 0 auto 40px;
  }

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

  .store-badges {
    justify-content: center;
  }

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

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

  .muscle-map-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .muscle-map-features {
    align-items: center;
  }

  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 420px;
    margin: 0 auto;
  }

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

  .pricing-card:last-child {
    grid-column: span 1;
    max-width: none;
  }

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

  .stats-grid-5 {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer-brand p {
    margin: 20px auto 0;
  }

  .social-links {
    justify-content: center;
  }

  .footer-bottom {
    justify-content: center;
    text-align: center;
  }

  .section-header {
    margin-bottom: 3rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .hero h1 {
    font-size: 2.25rem;
  }

  .phone-mockup {
    width: 230px;
    height: 480px;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .stat-item {
    padding: 24px 16px;
  }

  .download-stores {
    flex-direction: column;
    align-items: center;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .btn-lg {
    width: 100%;
  }
}

/* ============================================
   LEGAL PAGES (privacy, terms)
   ============================================ */

.legal-page {
  padding-top: 100px;
  min-height: 100vh;
}

.legal-page .container {
  max-width: 800px;
}

.legal-page h1 {
  font-size: 2.5rem;
  margin-bottom: 8px;
}

.legal-date {
  color: var(--text-muted);
  margin-bottom: 48px;
}

.legal-section {
  margin-bottom: 40px;
}

.legal-section h2 {
  font-size: 1.5rem;
  margin-bottom: 16px;
  color: var(--gold);
}

.legal-section h3 {
  font-size: 1.2rem;
  margin-bottom: 12px;
  margin-top: 24px;
}

.legal-section p,
.legal-section li {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 12px;
}

.legal-section ul {
  padding-left: 24px;
  list-style: disc;
}

.legal-section ul li {
  margin-bottom: 8px;
}

.legal-divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 60px 0;
}

.legal-nav {
  display: flex;
  gap: 16px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.legal-nav a {
  color: var(--gold);
  font-size: 0.9rem;
  padding: 6px 16px;
  border: 1px solid var(--border-gold);
  border-radius: 20px;
  transition: var(--transition);
}

.legal-nav a:hover {
  background: rgba(212, 175, 55, 0.1);
}

/* ============================================
   STORE LISTING PAGE
   ============================================ */

.store-listing {
  padding-top: 100px;
  min-height: 100vh;
}

.store-listing .container {
  max-width: 900px;
}

.store-section {
  margin-bottom: 60px;
  padding: 40px;
}

.store-section h2 {
  font-size: 1.5rem;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.store-field {
  margin-bottom: 24px;
}

.store-field label {
  display: block;
  font-size: 0.85rem;
  color: var(--gold);
  margin-bottom: 8px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.store-field .value {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px;
  color: var(--text-secondary);
  line-height: 1.7;
  font-size: 0.95rem;
  white-space: pre-wrap;
}

.store-field .char-count {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 4px;
  text-align: right;
}

.lang-tab {
  display: inline-block;
  padding: 8px 20px;
  margin: 4px;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  cursor: default;
}

.lang-tab.active {
  background: rgba(212, 175, 55, 0.15);
  border-color: var(--gold);
  color: var(--gold);
}