/* ============================================
   NANYE — Design System & Styles
   ============================================ */

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

/* ---------- CSS Custom Properties ---------- */
:root {
  /* Colors */
  --color-bg-primary: #020a1c;
  --color-bg-secondary: #041022;
  --color-bg-tertiary: #06162e;
  --color-bg-card: rgba(6, 22, 46, 0.6);
  --color-bg-glass: rgba(255, 255, 255, 0.03);
  --color-bg-glass-hover: rgba(255, 255, 255, 0.06);

  --color-accent-1: #00d4d4;     /* Cyan Primary */
  --color-accent-2: #00b4d8;     /* Cyan Darker */
  --color-accent-3: #0081a7;     /* Teal */
  --color-accent-4: #00afb9;     /* Teal Darker */
  --color-accent-5: #48cae4;     /* Cyan Light */

  --gradient-primary: #00d4d4;
  --gradient-hero: #020a1c;
  --gradient-card: rgba(0, 212, 212, 0.03);
  --gradient-text: #00d4d4;
  --gradient-glow: radial-gradient(ellipse at center, rgba(0, 212, 212, 0.15), transparent 70%);

  --color-text-primary: #f1f5f9;
  --color-text-secondary: #94a3b8;
  --color-text-muted: #64748b;
  --color-text-accent: #00d4d4;

  --color-border: rgba(0, 212, 212, 0.15);
  --color-border-hover: rgba(0, 212, 212, 0.35);

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --fs-hero: clamp(2.2rem, 4.5vw, 4rem);
  --fs-h1: clamp(2rem, 4vw, 3.5rem);
  --fs-h2: clamp(1.6rem, 3vw, 2.5rem);
  --fs-h3: clamp(1.2rem, 2vw, 1.5rem);
  --fs-body: 1rem;
  --fs-small: 0.875rem;
  --fs-tag: 0.75rem;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 5rem;
  --space-3xl: 8rem;

  /* Layout */
  --max-width: 1280px;
  --nav-height: 80px;

  /* Borders */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 40px rgba(0, 212, 212, 0.2);
  --shadow-glow-lg: 0 0 80px rgba(0, 212, 212, 0.3);

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast: 200ms;
  --duration-normal: 350ms;
  --duration-slow: 600ms;
}

/* ---------- Light Theme Overrides ---------- */
.light-section {
  --color-bg-primary: #ffffff;
  --color-bg-secondary: #f8fafc;
  --color-bg-tertiary: #f1f5f9;
  --color-bg-card: #ffffff;
  --color-bg-glass: rgba(0, 0, 0, 0.03);
  --color-bg-glass-hover: rgba(0, 0, 0, 0.06);

  --color-text-primary: #0f172a;
  --color-text-secondary: #475569;
  --color-text-muted: #64748b;

  --color-border: #e2e8f0;
  --color-border-hover: rgba(0, 212, 212, 0.5);

  --gradient-card: #ffffff;
  
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
}

.light-section .service-card {
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.light-section .service-card:hover {
  box-shadow: var(--shadow-glow), 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

.light-section .process-step .step-marker {
  background: #ffffff;
}

.light-section .form-group input,
.light-section .form-group textarea,
.light-section .form-group select {
  background: var(--color-bg-secondary);
  color: var(--color-text-primary);
  border-color: var(--color-border);
}

.light-section .form-group input::placeholder,
.light-section .form-group textarea::placeholder {
  color: var(--color-text-muted);
}

/* ---------- Skip to Content (Accessibility) ---------- */
.skip-to-content {
  position: fixed;
  top: -100%;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100000;
  padding: 12px 24px;
  background: var(--color-accent-1);
  color: #000;
  font-weight: 700;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  transition: top 0.3s;
}

.skip-to-content:focus {
  top: 0;
}

/* ---------- Focus Visible (Accessibility) ---------- */
*:focus-visible {
  outline: 2px solid var(--color-accent-1);
  outline-offset: 3px;
  border-radius: 4px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-primary);
  background: var(--color-bg-primary);
  color: var(--color-text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

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

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

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

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--color-accent-1);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-accent-5);
}

/* ============================================
   LOADER
   ============================================ */
.loader-overlay {
  position: fixed;
  inset: 0;
  background: var(--color-bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  transition: opacity 0.6s var(--ease-out), visibility 0.6s;
}

.loader-overlay.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader-content {
  width: min(90vw, 680px);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.loader-logo {
  width: 100%;
  height: auto;
  margin: 0 auto var(--space-md);
  animation: pulse-glow 1.5s ease-in-out infinite;
}

.loader-bar {
  width: min(54vw, 340px);
  height: 3px;
  background: rgba(0, 212, 212, 0.2);
  border-radius: 3px;
  overflow: hidden;
  margin: 0 auto;
}

.loader-bar-inner {
  width: 40%;
  height: 100%;
  background: var(--gradient-primary);
  border-radius: 3px;
  animation: loader-slide 1.2s ease-in-out infinite;
}

@keyframes loader-slide {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(350%); }
}

@keyframes pulse-glow {
  0%, 100% { filter: brightness(1) drop-shadow(0 0 10px rgba(0, 212, 212, 0.3)); }
  50% { filter: brightness(1.3) drop-shadow(0 0 30px rgba(0, 212, 212, 0.6)); }
}

/* ============================================
   NAVIGATION
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  transition: all var(--duration-normal) var(--ease-out);
}

.navbar.scrolled {
  background: rgba(2, 10, 28, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 800;
  font-size: 1.4rem;
  letter-spacing: -0.02em;
  z-index: 1001;
}

.nav-brand img {
  width: clamp(180px, 22vw, 240px);
  height: auto;
  display: block;
}

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

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

.nav-links a {
  position: relative;
  font-size: var(--fs-small);
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color var(--duration-fast) var(--ease-out);
  padding: var(--space-xs) 0;
}

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

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

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

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  color: var(--color-text-primary);
  font-size: var(--fs-small);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
}

.nav-cta:hover {
  transform: translateY(-2px);
  border-color: var(--color-accent-1);
  background: rgba(0, 212, 212, 0.08);
  box-shadow: 0 4px 15px rgba(0, 212, 212, 0.15);
}

/* Mobile toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 1001;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: 2px;
  transition: all var(--duration-normal) var(--ease-out);
}

.nav-toggle.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

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

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

.hero-bg img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 2s ease-in-out;
}

.hero-bg img.active {
  opacity: 0.35;
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(2, 10, 28, 0.3) 0%, rgba(2, 10, 28, 0.95) 100%);
}

/* Animated particles overlay */
.hero-particles {
  position: absolute;
  inset: 0;
  z-index: 1;
  overflow: hidden;
}

.particle {
  position: absolute;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: rgba(0, 212, 212, 0.4);
  animation: float-up linear infinite;
}

@keyframes float-up {
  0% { transform: translateY(100vh) scale(0); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translateY(-10vh) scale(1); opacity: 0; }
}

/* Glow orbs */
.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  z-index: 0;
  pointer-events: none;
}

.hero-glow--1 {
  width: 600px;
  height: 600px;
  background: rgba(0, 212, 212, 0.12);
  top: 10%;
  left: -10%;
  animation: orb-drift 20s ease-in-out infinite alternate;
}

.hero-glow--2 {
  width: 500px;
  height: 500px;
  background: rgba(0, 180, 216, 0.1);
  bottom: 10%;
  right: -5%;
  animation: orb-drift 25s ease-in-out infinite alternate-reverse;
}

.hero-glow--3 {
  width: 300px;
  height: 300px;
  background: rgba(72, 202, 228, 0.08);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation: orb-drift 18s ease-in-out infinite alternate;
}

@keyframes orb-drift {
  0% { transform: translate(0, 0); }
  100% { transform: translate(30px, -40px); }
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(0, 212, 212, 0.12);
  border: 1px solid rgba(0, 212, 212, 0.25);
  border-radius: var(--radius-full);
  font-size: var(--fs-tag);
  font-weight: 600;
  color: var(--color-accent-5);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-lg);
  animation: fade-in-up 0.8s var(--ease-out) 0.2s both;
}

.hero-tag::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent-1);
  animation: tag-pulse 2s ease-in-out infinite;
}

@keyframes tag-pulse {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; box-shadow: 0 0 8px var(--color-accent-1);  }
}

.hero h1 {
  font-size: var(--fs-hero);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-md);
  animation: fade-in-up 0.8s var(--ease-out) 0.4s both;
}

.hero h1 .line {
  display: block;
}

.hero-subtitle {
  font-size: clamp(1.05rem, 1.8vw, 1.25rem);
  color: var(--color-text-secondary);
  max-width: 600px;
  line-height: 1.8;
  margin-bottom: var(--space-xl);
  animation: fade-in-up 0.8s var(--ease-out) 0.6s both;
}

.hero-actions {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  animation: fade-in-up 0.8s var(--ease-out) 0.8s both;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  font-size: var(--fs-body);
  font-weight: 600;
  font-family: var(--font-primary);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
  border: none;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 4px 20px rgba(0, 212, 212, 0.35);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0, 212, 212, 0.5);
}

.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.15);
  opacity: 0;
  transition: opacity var(--duration-normal);
}

.btn-primary:hover::before {
  opacity: 1;
}

.btn-outline {
  background: transparent;
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
  backdrop-filter: blur(10px);
}

.btn-outline:hover {
  border-color: var(--color-accent-1);
  background: rgba(0, 212, 212, 0.08);
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(0, 212, 212, 0.15);
}

/* Hero scroll indicator */
.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  animation: fade-in-up 0.8s var(--ease-out) 1.2s both;
}

.hero-scroll span {
  font-size: var(--fs-tag);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.15em;
}

.scroll-indicator {
  width: 24px;
  height: 40px;
  border: 2px solid rgba(0, 212, 212, 0.3);
  border-radius: 12px;
  display: flex;
  justify-content: center;
  padding-top: 8px;
}

.scroll-dot {
  width: 4px;
  height: 8px;
  background: var(--color-accent-1);
  border-radius: 4px;
  animation: scroll-bounce 2s ease-in-out infinite;
}

@keyframes scroll-bounce {
  0%, 100% { transform: translateY(0); opacity: 1; }
  50% { transform: translateY(12px); opacity: 0.3; }
}

/* ---------- Typed Cursor Animation ---------- */
.typed-cursor {
  display: inline-block;
  color: var(--color-accent-1);
  font-weight: 300;
  animation: blink-cursor 0.8s step-end infinite;
  margin-left: 2px;
}

.typed-cursor.hidden {
  display: none;
}

@keyframes blink-cursor {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

/* ---------- Button Ripple Effect ---------- */
.btn .ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.35);
  transform: scale(0);
  animation: ripple-anim 0.6s ease-out;
  pointer-events: none;
}

@keyframes ripple-anim {
  to { transform: scale(4); opacity: 0; }
}

/* ---------- Back to Top Button ---------- */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  z-index: 900;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-accent-1);
  color: #000;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(0, 212, 212, 0.4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--duration-normal) var(--ease-out);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0, 212, 212, 0.6);
}

/* ---------- Stat Hint ---------- */
.stat-hint {
  display: block;
  margin-top: 12px;
  font-size: 0.7rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  opacity: 0.6;
  animation: subtle-pulse 2.5s ease-in-out infinite;
}

@keyframes subtle-pulse {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 0.8; }
}

/* ---------- Form Validation States ---------- */
.form-group input.valid,
.form-group textarea.valid,
.form-group select.valid {
  border-color: #059669;
}

.form-group input.invalid,
.form-group textarea.invalid,
.form-group select.invalid {
  border-color: #ef4444;
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.form-error {
  display: none;
  font-size: 0.75rem;
  color: #ef4444;
  margin-top: 4px;
}

.form-group.has-error .form-error {
  display: block;
}

/* ---------- Fade-in animation ---------- */
@keyframes fade-in-up {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ============================================
   SECTION HEADERS
   ============================================ */
.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-2xl);
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(0, 212, 212, 0.1);
  border: 1px solid rgba(0, 212, 212, 0.2);
  border-radius: var(--radius-full);
  font-size: var(--fs-tag);
  font-weight: 600;
  color: var(--color-accent-5);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-md);
}

.section-header h2 {
  font-size: var(--fs-h1);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: var(--space-md);
}

.section-header p {
  color: var(--color-text-secondary);
  font-size: clamp(1rem, 1.5vw, 1.125rem);
  line-height: 1.8;
}

/* ============================================
   SERVICES SECTION
   ============================================ */
.services {
  position: relative;
  background: var(--color-bg-primary);
}

.services::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: var(--gradient-glow);
  pointer-events: none;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.service-card {
  position: relative;
  padding: var(--space-xl);
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--duration-slow) var(--ease-out);
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0, 212, 212, 0.06), transparent 60%);
  opacity: 0;
  transition: opacity var(--duration-slow);
}

.service-card:hover {
  border-color: var(--color-border-hover);
  transform: translateY(-8px);
  box-shadow: var(--shadow-glow), var(--shadow-lg);
}

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

.service-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: rgba(0, 212, 212, 0.1);
  border: 1px solid rgba(0, 212, 212, 0.2);
  margin-bottom: var(--space-md);
  font-size: 1.5rem;
  transition: all var(--duration-normal) var(--ease-out);
}

.service-card:hover .service-icon {
  background: rgba(0, 212, 212, 0.2);
  box-shadow: 0 0 30px rgba(0, 212, 212, 0.2);
  transform: scale(1.05);
}

.service-card h3 {
  font-size: var(--fs-h3);
  font-weight: 700;
  margin-bottom: var(--space-sm);
  letter-spacing: -0.01em;
}

.service-card p {
  color: var(--color-text-secondary);
  font-size: var(--fs-small);
  line-height: 1.8;
  margin-bottom: var(--space-md);
}

.service-features {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.service-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--color-text-secondary);
  font-size: var(--fs-small);
}

.service-features li .check {
  width: 18px;
  height: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(0, 212, 212, 0.15);
  color: var(--color-accent-5);
  font-size: 10px;
  flex-shrink: 0;
}

/* ============================================
   PARTNERS SECTION
   ============================================ */
.partners {
  position: relative;
  background: var(--color-bg-primary);
  overflow: hidden;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.partners::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--color-bg-primary) 0%, transparent 15%, transparent 85%, var(--color-bg-primary) 100%);
  z-index: 2;
  pointer-events: none;
}

.partners-marquee-wrapper {
  padding: var(--space-lg) 0;
}

.partners-marquee {
  display: flex;
  gap: var(--space-3xl);
  animation: marquee-partners 35s linear infinite;
  width: max-content;
}

.partners-marquee:hover {
  animation-play-state: paused;
}

@keyframes marquee-partners {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.partner-logo {
  display: flex;
  align-items: center;
  gap: 16px;
  color: var(--color-text-secondary);
  font-size: 1.5rem;
  font-weight: 800;
  font-family: var(--font-primary);
  letter-spacing: -0.02em;
  opacity: 0.6;
  transition: all var(--duration-normal);
  filter: grayscale(1);
}

.partner-logo:hover {
  opacity: 1;
  color: var(--color-text-primary);
  filter: grayscale(0) drop-shadow(0 0 15px rgba(0, 212, 212, 0.4));
}

.partner-logo svg {
  color: var(--color-accent-1);
}

/* ============================================
   WHY US SECTION
   ============================================ */
.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.why-card {
  padding: var(--space-xl);
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
  transition: all var(--duration-normal);
}

.why-card:hover {
  background: rgba(0, 212, 212, 0.04);
  transform: translateY(-5px);
  border-color: var(--color-accent-1);
}

.why-icon {
  width: 64px;
  height: 64px;
  background: var(--color-bg-tertiary);
  border-radius: 50%;
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent-1);
  margin-bottom: var(--space-md);
}

.why-card h3 {
  font-size: var(--fs-h3);
  margin-bottom: var(--space-sm);
}

.why-card p {
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ============================================
   PORTFOLIO SECTION
   ============================================ */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.portfolio-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  transition: transform var(--duration-normal);
}

.portfolio-card:hover {
  transform: translateY(-8px);
  border-color: var(--color-accent-1);
}

.portfolio-image {
  height: 300px;
  width: 100%;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.portfolio-overlay {
  position: absolute;
  inset: 0;
  background: rgba(2, 10, 28, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  color: var(--color-text-primary);
  font-weight: 600;
  transition: opacity var(--duration-normal);
  backdrop-filter: blur(4px);
}

.portfolio-card:hover .portfolio-overlay {
  opacity: 1;
}

.portfolio-content {
  padding: var(--space-lg);
}

.portfolio-tag {
  color: var(--color-accent-1);
  font-size: var(--fs-tag);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  display: block;
  margin-bottom: var(--space-xs);
}

.portfolio-content h3 {
  font-size: 1.5rem;
  margin-bottom: var(--space-sm);
}

.portfolio-content p {
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.portfolio-action {
  text-align: center;
  margin-top: var(--space-2xl);
}

/* ============================================
   FAQ SECTION
   ============================================ */
.faq-accordion {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) 0;
  background: transparent;
  border: none;
  color: var(--color-text-primary);
  font-size: 1.1rem;
  font-weight: 600;
  font-family: var(--font-primary);
  cursor: pointer;
  text-align: left;
}

.faq-question svg {
  transition: transform 0.3s ease;
  color: var(--color-accent-1);
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
}

.faq-answer p {
  padding-bottom: var(--space-md);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ============================================
   EXPERTISE SECTION (with images)
   ============================================ */
.expertise {
  position: relative;
  background: var(--color-bg-secondary);
}

.expertise-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: center;
  margin-bottom: var(--space-3xl);
}

.expertise-item:last-child {
  margin-bottom: 0;
}

.expertise-item:nth-child(even) {
  direction: rtl;
}

.expertise-item:nth-child(even) > * {
  direction: ltr;
}

.expertise-visual {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
  transition: all var(--duration-slow) var(--ease-out);
}

.expertise-visual:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-glow-lg), var(--shadow-lg);
  border-color: var(--color-border-hover);
}

.expertise-visual img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}

.expertise-visual:hover img {
  transform: scale(1.05);
}

.expertise-text .section-tag {
  margin-bottom: var(--space-md);
}

.expertise-text h3 {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
  line-height: 1.2;
}

.expertise-text p {
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-lg);
}

.expertise-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
}

.expertise-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: var(--fs-small);
  color: var(--color-text-secondary);
  padding: 8px 0;
}

.expertise-list li svg {
  flex-shrink: 0;
  color: var(--color-accent-5);
}

/* ============================================
   STATS SECTION
   ============================================ */
.stats {
  position: relative;
  background: var(--color-bg-primary);
  overflow: hidden;
}

.stats::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0, 212, 212, 0.05) 0%, transparent 50%, rgba(0, 180, 216, 0.05) 100%);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
  position: relative;
}

.stat-item {
  background-color: transparent;
  perspective: 1000px; /* Enable 3D space */
  height: 300px;
  cursor: pointer;
}

.stat-inner {
  position: relative;
  width: 100%;
  height: 100%;
  text-align: center;
  transition: transform 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  transform-style: preserve-3d;
}

.stat-item:hover .stat-inner {
  transform: rotateY(180deg);
}

.stat-front, .stat-back {
  position: absolute;
  width: 100%;
  height: 100%;
  -webkit-backface-visibility: hidden; /* Safari */
  backface-visibility: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl) var(--space-md);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  overflow: hidden;
}

.stat-front {
  background: var(--color-bg-glass);
}

.stat-back {
  background: rgba(2, 10, 28, 0.95);
  border-color: var(--color-accent-1);
  box-shadow: var(--shadow-glow);
  transform: rotateY(180deg);
  padding: var(--space-md);
}

.stat-number {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 12px;
}

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

.stat-back p {
  color: var(--color-text-primary);
  font-size: 0.95rem;
  margin-bottom: var(--space-sm);
  line-height: 1.5;
  font-weight: 600;
}

.stat-back ul {
  list-style: none;
  padding: 0;
  text-align: left;
  width: 100%;
}

.stat-back li {
  color: var(--color-text-secondary);
  font-size: 0.85rem;
  padding: 6px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.stat-back li:last-child {
  border-bottom: none;
}

.stat-back li strong {
  color: var(--color-accent-1);
}

.client-review {
  background: rgba(255, 255, 255, 0.05);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-sm);
  text-align: left;
  position: relative;
  width: 100%;
}

.client-review::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--color-accent-1);
}

.client-review p {
  color: var(--color-text-secondary);
  font-style: italic;
  font-size: 0.85rem;
  margin-bottom: 0;
  font-weight: 400;
}

/* ============================================
   PROCESS SECTION
   ============================================ */
.process {
  position: relative;
  background: var(--color-bg-secondary);
}

.process-timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
}

.process-timeline::before {
  content: '';
  position: absolute;
  left: 28px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-accent-1);
  opacity: 0.3;
}

.process-step {
  display: flex;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
  position: relative;
}

.process-step:last-child {
  margin-bottom: 0;
}

.step-marker {
  flex-shrink: 0;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: rgba(0, 212, 212, 0.12);
  border: 2px solid rgba(0, 212, 212, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--color-accent-5);
  position: relative;
  z-index: 1;
  transition: all var(--duration-normal) var(--ease-out);
}

.process-step:hover .step-marker {
  background: rgba(0, 212, 212, 0.25);
  box-shadow: 0 0 30px rgba(0, 212, 212, 0.3);
  transform: scale(1.1);
}

.step-content {
  flex: 1;
  padding: var(--space-lg);
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--duration-normal) var(--ease-out);
}

.process-step:hover .step-content {
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-glow);
}

.step-content h4 {
  font-size: var(--fs-h3);
  font-weight: 700;
  margin-bottom: var(--space-xs);
}

.step-content p {
  color: var(--color-text-secondary);
  font-size: var(--fs-small);
  line-height: 1.8;
}

/* ============================================
   TECH STACK SECTION
   ============================================ */
.tech {
  position: relative;
  background: var(--color-bg-primary);
  overflow: hidden;
}

.tech-marquee {
  display: flex;
  gap: var(--space-lg);
  animation: marquee 30s linear infinite;
  width: max-content;
}

.tech-marquee:hover {
  animation-play-state: paused;
}

@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.tech-item {
  flex-shrink: 0;
  padding: var(--space-md) var(--space-xl);
  background: var(--color-bg-glass);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: var(--fs-small);
  font-weight: 600;
  color: var(--color-text-secondary);
  transition: all var(--duration-normal);
  white-space: nowrap;
}

.tech-item:hover {
  border-color: var(--color-border-hover);
  color: var(--color-text-primary);
  background: var(--color-bg-glass-hover);
}

.tech-item .tech-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* ============================================
   CTA SECTION
   ============================================ */
.cta-section {
  position: relative;
  background: var(--color-bg-secondary);
  overflow: hidden;
}

.cta-box {
  position: relative;
  padding: var(--space-3xl) var(--space-2xl);
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  text-align: center;
  overflow: hidden;
}

.cta-box::before {
  content: '';
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 212, 212, 0.15), transparent 70%);
  pointer-events: none;
}

.cta-box h2 {
  font-size: var(--fs-h1);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
  position: relative;
}

.cta-box p {
  color: var(--color-text-secondary);
  font-size: clamp(1rem, 1.5vw, 1.125rem);
  max-width: 600px;
  margin: 0 auto var(--space-xl);
  line-height: 1.8;
  position: relative;
}

.cta-box .hero-actions {
  justify-content: center;
  position: relative;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--color-bg-primary);
  border-top: 1px solid var(--color-border);
  padding: var(--space-2xl) 0 var(--space-lg);
}

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

.footer-brand p {
  color: var(--color-text-secondary);
  font-size: var(--fs-small);
  max-width: 300px;
  margin-top: var(--space-md);
  line-height: 1.8;
}

.footer-socials {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.footer-socials a {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--color-bg-glass);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  transition: all var(--duration-normal);
}

.footer-socials a:hover {
  border-color: var(--color-accent-1);
  color: var(--color-accent-5);
  background: rgba(0, 212, 212, 0.1);
  transform: translateY(-2px);
}

.footer-col h4 {
  font-size: var(--fs-small);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-md);
  color: var(--color-text-primary);
}

.footer-col ul li {
  margin-bottom: var(--space-xs);
}

.footer-col ul li a {
  color: var(--color-text-secondary);
  font-size: var(--fs-small);
  transition: color var(--duration-fast);
}

.footer-col ul li a:hover {
  color: var(--color-accent-5);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
  font-size: var(--fs-small);
  color: var(--color-text-muted);
}

.footer-bottom a {
  color: var(--color-text-secondary);
  transition: color var(--duration-fast);
}

.footer-bottom a:hover {
  color: var(--color-accent-5);
}

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

/* ============================================
   SCROLL REVEAL ANIMATIONS
   ============================================ */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

.reveal.revealed {
  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; }

/* ============================================
   CONTACT SECTION
   ============================================ */
.contact {
  position: relative;
  background: var(--color-bg-primary);
}

.contact-grid {
  max-width: 700px;
  margin: 0 auto;
}

.contact-info {
  width: 100%;
}

.contact-info h3 {
  font-size: var(--fs-h3);
  font-weight: 800;
  margin-bottom: var(--space-sm);
  letter-spacing: -0.02em;
}

.contact-info > p {
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-lg);
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.contact-method {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md);
  background: var(--color-bg-glass);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--duration-normal);
  text-decoration: none;
}

.contact-method:hover {
  border-color: var(--color-border-hover);
  background: var(--color-bg-glass-hover);
  transform: translateX(4px);
}

.contact-method-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: rgba(0, 212, 212, 0.1);
  color: var(--color-accent-5);
  font-size: 1.2rem;
  flex-shrink: 0;
}

.contact-method-text span {
  display: block;
  font-size: var(--fs-tag);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 2px;
}

.contact-method-text a,
.contact-method-text p {
  color: var(--color-text-primary);
  font-weight: 500;
  font-size: var(--fs-small);
  margin: 0;
}

.contact-response-time {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  margin-top: var(--space-lg);
  padding: var(--space-sm) var(--space-md);
  background: rgba(0, 212, 212, 0.06);
  border: 1px solid rgba(0, 212, 212, 0.15);
  border-radius: var(--radius-full);
  color: var(--color-accent-1);
  font-size: var(--fs-small);
  font-weight: 500;
  width: fit-content;
}

/* Contact form */
.contact-form {
  width: 100%;
  padding: var(--space-xl);
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
}

.contact-form-header {
  margin-bottom: var(--space-lg);
}

.contact-form-header h4 {
  font-size: var(--fs-h3);
  font-weight: 700;
  margin-bottom: var(--space-xs);
  color: var(--color-text-primary);
}

.contact-form-header p {
  font-size: var(--fs-small);
  color: var(--color-text-muted);
}

.form-group {
  margin-bottom: var(--space-md);
}

.form-group label {
  display: block;
  font-size: var(--fs-small);
  font-weight: 600;
  margin-bottom: var(--space-xs);
  color: var(--color-text-secondary);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-primary);
  font-family: var(--font-primary);
  font-size: var(--fs-body);
  transition: all var(--duration-normal);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--color-accent-1);
  box-shadow: 0 0 0 3px rgba(0, 212, 212, 0.1);
}

.form-group textarea {
  min-height: 140px;
  resize: vertical;
}

.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%2394a3b8' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
}

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

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

.form-disclaimer {
  margin-top: var(--space-sm);
  font-size: var(--fs-tag);
  color: var(--color-text-muted);
  text-align: center;
  line-height: 1.5;
}

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

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

  .expertise-item:nth-child(even) {
    direction: ltr;
  }

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

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

  .contact-grid {
    max-width: 100%;
  }
}

@media (max-width: 768px) {
  :root {
    --nav-height: 70px;
  }

  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 42px;
    height: 42px;
  }

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

  .stat-hint {
    display: none;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 400px;
    height: 100vh;
    background: rgba(2, 10, 28, 0.97);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    flex-direction: column;
    justify-content: center;
    gap: var(--space-xl);
    transition: right var(--duration-slow) var(--ease-out);
    border-left: 1px solid var(--color-border);
    z-index: 1000;
  }

  .nav-links.open {
    right: 0;
  }

  .nav-links a {
    font-size: 1.25rem;
  }

  .nav-toggle {
    display: flex;
  }

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

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

  .expertise-list {
    grid-template-columns: 1fr;
  }

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

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

  .footer-legal {
    flex-wrap: wrap;
    justify-content: center;
  }

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

  .hero-actions {
    flex-direction: column;
  }

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

  .process-step {
    gap: var(--space-md);
  }

  .process-timeline::before {
    left: 28px;
  }
}

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

  .section-pad {
    padding: var(--space-2xl) 0;
  }
}

/* ============================================
   MOBILE NAV OVERLAY
   ============================================ */
.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: all var(--duration-normal);
}

.nav-overlay.visible {
  opacity: 1;
  visibility: visible;
}