/* ===== Design Tokens ===== */
:root {
  /* Colors */
  --bg-primary: #0a0a0f;
  --bg-secondary: #111119;
  --bg-tertiary: #16161f;
  --bg-card: rgba(22, 22, 35, 0.6);
  --bg-glass: rgba(255, 255, 255, 0.03);

  --text-primary: #f0f0f5;
  --text-secondary: #a0a0b8;
  --text-muted: #6b6b82;

  --accent-start: #6366f1;
  --accent-mid: #8b5cf6;
  --accent-end: #a78bfa;
  --accent-glow: rgba(99, 102, 241, 0.3);
  --accent-cyan: #22d3ee;
  --accent-emerald: #34d399;

  --problem-color: #f87171;
  --problem-bg: rgba(248, 113, 113, 0.08);
  --solution-color: #34d399;
  --solution-bg: rgba(52, 211, 153, 0.08);

  --border-color: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(255, 255, 255, 0.12);

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--accent-start), var(--accent-mid), var(--accent-end));
  --gradient-glow: radial-gradient(600px circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(99, 102, 241, 0.06), transparent 40%);
  --gradient-card: linear-gradient(135deg, rgba(99, 102, 241, 0.08), rgba(139, 92, 246, 0.04), transparent);

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

  /* Spacing */
  --section-padding: 120px 0;
  --container-max: 1200px;

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 24px;

  /* 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: 400ms;
  --duration-slow: 600ms;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-sans);
  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;
}

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

/* ===== Container ===== */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Cursor Glow ===== */
.cursor-glow {
  position: fixed;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.07) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
  transform: translate(-50%, -50%);
  transition: opacity 0.3s;
  opacity: 0;
}

.cursor-glow.active {
  opacity: 1;
}

/* ===== Particle Canvas ===== */
#particleCanvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.5;
}

/* ===== Navigation ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: all var(--duration-normal) var(--ease-out);
}

.navbar.scrolled {
  padding: 10px 0;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
}

.nav-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.5px;
  transition: transform var(--duration-fast) var(--ease-out);
}

.nav-logo:hover {
  transform: scale(1.05);
}

.logo-bracket {
  color: var(--accent-start);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.nav-link {
  padding: 8px 16px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-out);
  position: relative;
}

.nav-link:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.04);
}

.nav-link--cta {
  background: var(--gradient-primary);
  color: white !important;
  padding: 8px 20px;
}

.nav-link--cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 20px var(--accent-glow);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

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

.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===== Hero Section ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 0 80px;
  overflow: hidden;
}

.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
}

/* ===== Hero Split Layout ===== */
.hero-split {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-text {
  text-align: left;
}

.hero-text .hero-subtitle {
  margin-left: 0;
}

.hero-text .hero-cta-group {
  justify-content: flex-start;
}

.hero-text .hero-tech-stack {
  justify-content: flex-start;
}

/* ===== Hero Photo ===== */
.hero-photo {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-photo-wrapper {
  position: relative;
  max-width: 450px;
  width: 100%;
  animation: float 6s ease-in-out infinite;
}

.hero-photo-glow {
  position: absolute;
  inset: -20px;
  background: radial-gradient(ellipse at 50% 45%, rgba(139, 92, 246, 0.2), rgba(99, 102, 241, 0.1) 40%, transparent 70%);
  filter: blur(35px);
  border-radius: 50%;
  z-index: -1;
  animation: glow-pulse 4s ease-in-out infinite;
}

.hero-photo-wrapper::before {
  content: '';
  position: absolute;
  top: 15%;
  left: 5%;
  width: 90%;
  height: 60%;
  background: radial-gradient(ellipse at 50% 45%, rgba(124, 58, 237, 0.15), transparent 65%);
  filter: blur(30px);
  z-index: -1;
  border-radius: 50%;
}

.hero-photo-wrapper::after {
  content: '';
  position: absolute;
  bottom: 0%;
  left: 15%;
  width: 70%;
  height: 40%;
  background: radial-gradient(ellipse at center, rgba(99, 102, 241, 0.1), transparent 65%);
  filter: blur(25px);
  z-index: -1;
  border-radius: 50%;
}

@keyframes glow-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.7; transform: scale(1.03); }
}

.hero-photo-img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform var(--duration-normal) var(--ease-out);
  mask-image: linear-gradient(to bottom, black 0%, black 55%, transparent 95%);
  -webkit-mask-image: linear-gradient(to bottom, black 0%, black 55%, transparent 95%);
}

.hero-photo-img:hover {
  transform: scale(1.03);
}

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

@media (max-width: 768px) {
  .hero-split {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }

  .hero-text {
    text-align: center;
    order: 2;
  }

  .hero-text .hero-cta-group {
    justify-content: center;
  }

  .hero-text .hero-tech-stack {
    flex-direction: column;
    align-items: center;
  }

  .hero-photo {
    order: 1;
  }

  .hero-photo-wrapper {
    max-width: 300px;
  }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 100px;
  border: 1px solid var(--border-color);
  background: var(--bg-glass);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 32px;
  backdrop-filter: blur(10px);
}

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

@keyframes pulse-dot {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.4); }
  50% { opacity: 0.8; box-shadow: 0 0 0 6px rgba(52, 211, 153, 0); }
}

.hero-title {
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -3px;
  margin-bottom: 24px;
}

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

.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 40px;
  line-height: 1.6;
}

.hero-cta-group {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 64px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 600;
  font-family: var(--font-sans);
  border: none;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 4px 24px var(--accent-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(99, 102, 241, 0.4);
}

.btn-primary::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.1), transparent);
  opacity: 0;
  transition: opacity var(--duration-fast);
}

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

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-hover);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.btn-glass {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(10px);
}

.btn-glass:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 16px 32px;
  font-size: 1rem;
}

/* ===== Tech Stack (Hero) ===== */
.hero-tech-stack {
  display: flex;
  align-items: center;
  gap: 20px;
  justify-content: center;
}

.tech-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 2px;
}

.tech-icons {
  display: flex;
  gap: 12px;
}

.tech-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background: var(--bg-glass);
  color: var(--text-secondary);
  transition: all var(--duration-normal) var(--ease-out);
}

.tech-icon svg {
  width: 20px;
  height: 20px;
}

.tech-icon:hover {
  border-color: var(--accent-start);
  color: var(--accent-start);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.15);
}

/* ===== Scroll Indicator ===== */
.hero-scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 2px;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--accent-start), transparent);
  animation: scroll-pulse 2s ease-in-out infinite;
}

@keyframes scroll-pulse {
  0%, 100% { opacity: 1; transform: scaleY(1); }
  50% { opacity: 0.3; transform: scaleY(0.5); transform-origin: top; }
}

/* ===== Section Shared ===== */
.section {
  position: relative;
  padding: var(--section-padding);
  z-index: 1;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent-start);
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}

.section-title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  letter-spacing: -1.5px;
  line-height: 1.15;
}

/* ===== About Section ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

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

.about-description strong {
  color: var(--text-primary);
  font-weight: 600;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.stat-card {
  text-align: center;
  padding: 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background: var(--bg-glass);
  transition: all var(--duration-normal) var(--ease-out);
}

.stat-card:hover {
  border-color: var(--accent-start);
  background: rgba(99, 102, 241, 0.04);
  transform: translateY(-4px);
}

.stat-number {
  font-size: 2rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-suffix {
  font-size: 1.5rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* ===== Code Window ===== */
.code-window {
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border-color);
}

.code-dots {
  display: flex;
  gap: 6px;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.dot--red { background: #f87171; }
.dot--yellow { background: #fbbf24; }
.dot--green { background: #34d399; }

.code-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.code-body {
  padding: 20px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.8;
  color: var(--text-secondary);
  overflow-x: auto;
}

.code-body code {
  font-family: inherit;
}

.code-keyword { color: #c084fc; }
.code-var { color: #67e8f9; }
.code-prop { color: #818cf8; }
.code-string { color: #34d399; }
.code-bool { color: #fbbf24; }

/* ===== Problems & Solutions ===== */
.ps-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 40px;
  align-items: start;
}

.ps-column-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 24px;
  color: var(--problem-color);
}

.ps-column-title--solution {
  color: var(--solution-color);
}

.ps-cards {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.ps-card {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  transition: all var(--duration-normal) var(--ease-out);
}

.ps-card--problem {
  background: var(--problem-bg);
  border-color: rgba(248, 113, 113, 0.15);
}

.ps-card--problem:hover {
  border-color: rgba(248, 113, 113, 0.3);
  transform: translateX(-4px);
}

.ps-card--problem .ps-card-icon {
  color: var(--problem-color);
}

.ps-card--solution {
  background: var(--solution-bg);
  border-color: rgba(52, 211, 153, 0.15);
}

.ps-card--solution:hover {
  border-color: rgba(52, 211, 153, 0.3);
  transform: translateX(4px);
}

.ps-card--solution .ps-card-icon {
  color: var(--solution-color);
}

.ps-card-icon {
  flex-shrink: 0;
  margin-top: 2px;
}

.ps-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.ps-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 120px;
}

.ps-arrow {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background: var(--bg-glass);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-start);
  animation: arrow-bounce 2s ease-in-out infinite;
}

@keyframes arrow-bounce {
  0%, 100% { transform: translateX(0); }
  50% { transform: translateX(8px); }
}

/* ===== Features Section ===== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-card {
  position: relative;
  padding: 32px 24px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  transition: all var(--duration-normal) var(--ease-out);
  overflow: hidden;
}

.feature-card:hover {
  border-color: var(--accent-start);
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(99, 102, 241, 0.08);
}

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

.feature-glow {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--duration-normal);
}

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(139, 92, 246, 0.08));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-mid);
  margin-bottom: 20px;
  transition: all var(--duration-normal) var(--ease-out);
}

.feature-card:hover .feature-icon {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.25), rgba(139, 92, 246, 0.15));
  transform: scale(1.1);
}

.feature-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.3px;
}

.feature-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ===== Strengths Section ===== */
.strengths-banner {
  display: flex;
  align-items: center;
  gap: 48px;
  padding: 48px 56px;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-color);
  background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
  position: relative;
  overflow: hidden;
}

.strengths-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-card);
  opacity: 0.5;
}

.strength-item {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  flex: 1;
  position: relative;
  z-index: 1;
}

.strength-icon {
  flex-shrink: 0;
  color: var(--accent-start);
  opacity: 0.8;
}

.strength-item h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 6px;
  letter-spacing: -0.3px;
}

.strength-item p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.strength-divider {
  width: 1px;
  height: 80px;
  background: linear-gradient(to bottom, transparent, var(--border-hover), transparent);
  flex-shrink: 0;
}

/* ===== Testimonials ===== */
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.testimonial-card {
  padding: 32px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  transition: all var(--duration-normal) var(--ease-out);
  position: relative;
}

.testimonial-card::before {
  content: '"';
  position: absolute;
  top: 20px;
  right: 28px;
  font-size: 5rem;
  font-weight: 900;
  color: rgba(99, 102, 241, 0.07);
  line-height: 1;
  font-family: Georgia, serif;
}

.testimonial-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
}

.testimonial-stars {
  display: flex;
  gap: 4px;
  color: #fbbf24;
  margin-bottom: 16px;
}

.testimonial-text {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.testimonial-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  color: white;
}

.testimonial-name {
  font-weight: 600;
  font-size: 0.9rem;
  display: block;
}

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

/* ===== CTA Section ===== */
.cta {
  padding: 80px 0 120px;
}

.cta-card {
  position: relative;
  text-align: center;
  padding: 80px 48px;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-color);
  background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
  overflow: hidden;
}

.cta-bg-pattern {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(ellipse at 20% 50%, rgba(99, 102, 241, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 50%, rgba(139, 92, 246, 0.08) 0%, transparent 50%);
}

.cta-card > * {
  position: relative;
  z-index: 1;
}

.cta-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -1px;
  margin: 16px 0;
}

.cta-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 500px;
  margin: 0 auto 36px;
  line-height: 1.6;
}

.cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== Footer ===== */
.footer {
  position: relative;
  border-top: 1px solid var(--border-color);
  padding: 64px 0 32px;
  z-index: 1;
  background: var(--bg-primary);
}

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

.footer-tagline {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 12px;
  max-width: 280px;
}

.footer-links h4,
.footer-social h4 {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.footer-links a {
  display: block;
  font-size: 0.875rem;
  color: var(--text-secondary);
  padding: 4px 0;
  transition: color var(--duration-fast);
}

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

.social-icons {
  display: flex;
  gap: 12px;
}

.social-link {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--duration-normal) var(--ease-out);
}

.social-link:hover {
  color: var(--text-primary);
  border-color: var(--accent-start);
  background: rgba(99, 102, 241, 0.08);
  transform: translateY(-2px);
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
  text-align: center;
}

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

/* ===== Animations ===== */
[data-animate] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--duration-slow) var(--ease-out), transform var(--duration-slow) var(--ease-out);
}

[data-animate].animate-in {
  opacity: 1;
  transform: translateY(0);
}

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

  .ps-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .ps-divider {
    padding-top: 0;
  }

  .ps-arrow {
    transform: rotate(90deg);
  }

  @keyframes arrow-bounce {
    0%, 100% { transform: rotate(90deg) translateX(0); }
    50% { transform: rotate(90deg) translateX(8px); }
  }
}

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

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--bg-secondary);
    flex-direction: column;
    padding: 80px 32px 32px;
    border-left: 1px solid var(--border-color);
    transition: right var(--duration-normal) var(--ease-out);
    gap: 4px;
  }

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

  .nav-link {
    font-size: 1rem;
    padding: 12px 16px;
    width: 100%;
  }

  .nav-toggle {
    display: flex;
  }

  .hero-title {
    letter-spacing: -2px;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about-stats {
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
  }

  .stat-card {
    padding: 16px 12px;
  }

  .stat-number {
    font-size: 1.5rem;
  }

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

  .feature-card {
    padding: 24px 20px;
  }

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

  .footer-content {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .strengths-banner {
    flex-direction: column;
    padding: 32px 28px;
    gap: 32px;
  }

  .strength-divider {
    width: 100%;
    height: 1px;
  }

  .cta-card {
    padding: 48px 24px;
  }

  .hero-tech-stack {
    flex-direction: column;
    gap: 12px;
  }
}

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

  .hero-cta-group {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    justify-content: center;
  }

  .cta-buttons {
    flex-direction: column;
    align-items: stretch;
  }
}

/* ===== Mobile Nav Overlay ===== */
.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 999;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-normal);
}

.nav-overlay.active {
  opacity: 1;
  pointer-events: all;
}

/* ===== Loading Animation for stat numbers ===== */
@keyframes countUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== Selection ===== */
::selection {
  background: rgba(99, 102, 241, 0.3);
  color: white;
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar {
  width: 6px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--bg-tertiary);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(99, 102, 241, 0.3);
}