/* ========================================
   ENTANGLE AGENCY - Design System
   ======================================== */

/* CSS Custom Properties */
:root {
  /* Colors - Teal/Emerald Theme */
  --color-primary: #14b8a6;
  --color-primary-light: #2dd4bf;
  --color-primary-dark: #0d9488;
  --color-secondary: #10b981;
  --color-accent: #22d3ee;
  --color-accent-light: #67e8f9;

  /* Background Colors */
  --bg-dark: #0a0f0f;
  --bg-surface: #0f1717;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-card-hover: rgba(255, 255, 255, 0.06);
  --bg-glass: rgba(255, 255, 255, 0.05);

  /* Text Colors */
  --text-primary: #ffffff;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  --gradient-accent: linear-gradient(135deg, var(--color-accent) 0%, var(--color-primary) 100%);
  --gradient-glow: radial-gradient(ellipse at center, rgba(20, 184, 166, 0.12) 0%, transparent 70%);

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

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --font-size-5xl: 3.5rem;
  --font-size-6xl: 4.5rem;

  /* Border Radius */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px rgba(20, 184, 166, 0.4);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  /* Container */
  --container-max: 1200px;
  --container-padding: 1.5rem;
}

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

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 {
  font-size: var(--font-size-5xl);
}

h2 {
  font-size: var(--font-size-4xl);
}

h3 {
  font-size: var(--font-size-2xl);
}

h4 {
  font-size: var(--font-size-xl);
}

p {
  color: var(--text-secondary);
  font-size: var(--font-size-lg);
}

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

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

/* ========================================
   NAVIGATION
   ======================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: var(--space-md) 0;
  background: rgba(10, 10, 15, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  transition: all var(--transition-base);
}

.navbar.scrolled {
  padding: var(--space-sm) 0;
  background: rgba(10, 10, 15, 0.95);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-xl);
  font-weight: 700;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: var(--font-size-lg);
}

.logo-img {
  width: 40px;
  height: auto;
  filter: invert(1) brightness(2);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  list-style: none;
}

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

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

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

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

.nav-links a.nav-cta,
.nav-cta {
  background: var(--color-primary) !important;
  padding: 12px 28px !important;
  border-radius: 50px !important;
  font-weight: 600 !important;
  font-size: 0.95rem !important;
  color: #0a0f0f !important;
  transition: all var(--transition-base) !important;
  border: none !important;
  box-shadow: 0 4px 15px rgba(20, 184, 166, 0.35) !important;
  white-space: nowrap !important;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  text-decoration: none !important;
  line-height: 1 !important;
  overflow: visible !important;
}

.nav-links a.nav-cta:hover,
.nav-cta:hover {
  background: var(--color-primary-light) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 6px 20px rgba(20, 184, 166, 0.5) !important;
  color: #0a0f0f !important;
}

.nav-links a.nav-cta::after,
.nav-cta::after {
  display: none !important;
  content: none !important;
}

/* Mobile Menu */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-xs);
}

.mobile-menu-btn span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: all var(--transition-fast);
}

/* ========================================
   BUTTONS
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-lg);
  font-size: var(--font-size-base);
  font-weight: 600;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--bg-dark);
  box-shadow: 0 4px 15px rgba(20, 184, 166, 0.3);
}

.btn-primary:hover {
  background: var(--color-primary-light);
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(20, 184, 166, 0.4);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 2px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--color-primary);
  color: var(--color-primary-light);
}

.btn-lg {
  padding: var(--space-md) var(--space-xl);
  font-size: var(--font-size-lg);
}

/* ========================================
   CARDS
   ======================================== */
.card {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: all var(--transition-base);
}

.card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 255, 255, 0.1);
  transform: translateY(-5px);
}

.card-glass {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

/* ========================================
   HERO SECTION
   ======================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: var(--space-3xl) 0;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: var(--gradient-glow);
  animation: rotate 20s linear infinite;
}

@keyframes rotate {
  from {
    transform: rotate(0deg);
  }

  to {
    transform: rotate(360deg);
  }
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 900px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  background: var(--bg-glass);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
  backdrop-filter: blur(10px);
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  background: #22c55e;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.5;
  }
}

.hero h1 {
  font-size: clamp(2.5rem, 8vw, var(--font-size-6xl));
  margin-bottom: var(--space-md);
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero h1 .gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: var(--font-size-xl);
  max-width: 600px;
  margin: 0 auto var(--space-xl);
}

.hero-buttons {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* ========================================
   SECTIONS
   ======================================== */
.section {
  padding: var(--space-3xl) 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--space-2xl);
}

.section-header .label {
  display: inline-block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-primary-light);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-sm);
}

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

/* ========================================
   SERVICES GRID
   ======================================== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.service-card {
  padding: var(--space-xl);
  text-align: left;
}

.service-icon {
  width: 60px;
  height: 60px;
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-md);
}

.service-card h3 {
  margin-bottom: var(--space-sm);
}

.service-card p {
  font-size: var(--font-size-base);
}

/* ========================================
   STATS SECTION
   ======================================== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
}

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

.stat-number {
  font-size: var(--font-size-5xl);
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: var(--space-xs);
}

.stat-label {
  font-size: var(--font-size-base);
  color: var(--text-secondary);
}

/* ========================================
   TEAM SECTION
   ======================================== */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-xl);
  max-width: 800px;
  margin: 0 auto;
}

.team-card {
  text-align: center;
  padding: var(--space-xl);
}

.team-avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: var(--gradient-primary);
  margin: 0 auto var(--space-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-4xl);
  font-weight: 700;
  overflow: hidden;
}

.team-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.team-card h3 {
  margin-bottom: var(--space-xs);
}

.team-role {
  color: var(--color-primary-light);
  font-size: var(--font-size-base);
  margin-bottom: var(--space-sm);
}

.team-bio {
  font-size: var(--font-size-sm);
}

/* ========================================
   VALUES SECTION
   ======================================== */
.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-lg);
}

.value-card {
  text-align: center;
  padding: var(--space-xl);
}

.value-icon {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--space-md);
}

/* ========================================
   PROCESS SECTION
   ======================================== */
.process-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
  counter-reset: process;
}

.process-card {
  position: relative;
  padding: var(--space-xl);
  padding-left: calc(var(--space-xl) + 50px);
}

.process-card::before {
  counter-increment: process;
  content: counter(process);
  position: absolute;
  top: var(--space-xl);
  left: var(--space-lg);
  width: 36px;
  height: 36px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--bg-dark);
}

/* ========================================
   TECH STACK
   ======================================== */
.tech-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-md);
}

.tech-item {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.05);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

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

/* ========================================
   CONTACT FORM
   ======================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: start;
}

.contact-info h3 {
  margin-bottom: var(--space-md);
}

.contact-info p {
  margin-bottom: var(--space-lg);
}

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

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

.contact-item-icon {
  width: 50px;
  height: 50px;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xl);
}

.contact-item-text span {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

.contact-item-text strong {
  font-size: var(--font-size-base);
  color: var(--text-primary);
}

.contact-form {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
}

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

.form-group label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 500;
  margin-bottom: var(--space-xs);
  color: var(--text-secondary);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-surface);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  color: var(--text-primary);
  font-family: inherit;
  transition: border-color var(--transition-fast);
}

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

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-group select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%23a1a1aa' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
}

/* ========================================
   NEWSLETTER
   ======================================== */
.newsletter {
  background: var(--bg-surface);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  text-align: center;
}

.newsletter-form {
  display: flex;
  gap: var(--space-sm);
  max-width: 500px;
  margin: var(--space-lg) auto 0;
}

.newsletter-form input {
  flex: 1;
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-dark);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  color: var(--text-primary);
  font-size: var(--font-size-base);
}

.newsletter-form input:focus {
  outline: none;
  border-color: var(--color-primary);
}

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

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-lg);
}

.footer-links {
  display: flex;
  gap: var(--space-lg);
  list-style: none;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

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

.footer-copyright {
  color: var(--text-muted);
  font-size: var(--font-size-sm);
}

/* ========================================
   PAGE HEADER
   ======================================== */
.page-header {
  padding: calc(80px + var(--space-3xl)) 0 var(--space-3xl);
  text-align: center;
  background: var(--bg-surface);
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  height: 100%;
  background: var(--gradient-glow);
  opacity: 0.5;
}

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

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

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

.faq-item {
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding: var(--space-md) 0;
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-size: var(--font-size-lg);
  font-weight: 600;
}

.faq-question::after {
  content: '+';
  font-size: var(--font-size-2xl);
  color: var(--color-primary);
  transition: transform var(--transition-fast);
}

.faq-item.active .faq-question::after {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base);
}

.faq-item.active .faq-answer {
  max-height: 200px;
  padding-top: var(--space-md);
}

/* ========================================
   ANIMATIONS
   ======================================== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */
@media (max-width: 1024px) {
  :root {
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.5rem;
  }
}

@media (max-width: 768px) {
  :root {
    --font-size-4xl: 2rem;
    --font-size-5xl: 2.5rem;
    --space-3xl: 4rem;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-surface);
    flex-direction: column;
    padding: var(--space-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }

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

  .mobile-menu-btn {
    display: flex;
  }

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

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

  .footer-content {
    flex-direction: column;
    text-align: center;
  }

  .newsletter-form {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  :root {
    --container-padding: 1rem;
    --font-size-3xl: 1.75rem;
    --font-size-4xl: 1.75rem;
  }

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