/* ============================================
   HIPP AI - Landing Page Styles
   ============================================ */

/* CSS Variables */
:root {
  --color-bg: #000000;
  --color-bg-secondary: #0a0a0a;
  --color-bg-card: #111111;
  --color-primary: #39FF14;
  --color-primary-dim: rgba(57, 255, 20, 0.1);
  --color-primary-glow: rgba(57, 255, 20, 0.4);
  --color-text: #ffffff;
  --color-text-muted: #888888;
  --color-border: #222222;

  --font-heading: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;

  --transition-fast: 0.2s ease;
  --transition-medium: 0.3s ease;

  --container-width: 1200px;
  --section-padding: 100px 0;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

/* Container */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Typography */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
}

h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 1rem;
}

h3 {
  font-size: 1.5rem;
}

p {
  color: var(--color-text-muted);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 32px;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  border-radius: 8px;
  cursor: pointer;
  transition: all var(--transition-medium);
  border: none;
  gap: 8px;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-bg);
  box-shadow: 0 0 20px var(--color-primary-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 40px var(--color-primary-glow), 0 10px 30px rgba(0, 0, 0, 0.3);
}

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

.btn-secondary:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* ============================================
   NAVIGATION
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 20px 0;
  transition: all var(--transition-medium);
}

.nav.scrolled {
  background-color: rgba(0, 0, 0, 0.9);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  padding: 16px 0;
}

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

.nav-logo {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-text);
}

.nav-logo span {
  color: var(--color-primary);
  text-shadow: 0 0 10px var(--color-primary-glow);
}

.nav-links {
  display: flex;
  gap: 40px;
  list-style: none;
}

.nav-links a {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
  position: relative;
}

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

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-medium);
}

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

.nav-cta {
  padding: 12px 24px;
  font-size: 0.9rem;
}

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

.nav-toggle span {
  width: 24px;
  height: 2px;
  background-color: var(--color-text);
  transition: all var(--transition-fast);
}

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

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.hero-gradient {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.15;
}

.hero-gradient-1 {
  top: -200px;
  right: -100px;
  background: var(--color-primary);
}

.hero-gradient-2 {
  bottom: -200px;
  left: -100px;
  background: var(--color-primary);
  opacity: 0.1;
}

.hero-content {
  text-align: center;
  max-width: 900px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background-color: var(--color-primary-dim);
  border: 1px solid rgba(57, 255, 20, 0.2);
  border-radius: 50px;
  font-size: 0.875rem;
  color: var(--color-primary);
  margin-bottom: 24px;
}

.hero-badge::before {
  content: '';
  width: 8px;
  height: 8px;
  background-color: var(--color-primary);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

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

.hero h1 {
  margin-bottom: 24px;
}

.hero h1 .highlight {
  color: var(--color-primary);
  text-shadow: 0 0 30px var(--color-primary-glow);
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto 40px;
}

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

/* ============================================
   SERVICES SECTION
   ============================================ */
.services {
  padding: var(--section-padding);
  background-color: var(--color-bg-secondary);
}

.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 60px;
}

.section-header p {
  margin-top: 16px;
  font-size: 1.1rem;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.service-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 32px;
  transition: all var(--transition-medium);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
  opacity: 0;
  transition: opacity var(--transition-medium);
}

.service-card:hover {
  transform: translateY(-5px);
  border-color: rgba(57, 255, 20, 0.3);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

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

.service-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-primary-dim);
  border-radius: 12px;
  margin-bottom: 20px;
  font-size: 1.5rem;
}

.service-card h3 {
  margin-bottom: 12px;
  color: var(--color-text);
}

.service-card p {
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ============================================
   HOW IT WORKS SECTION
   ============================================ */
.how-it-works {
  padding: var(--section-padding);
}

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 40px;
  margin-top: 60px;
}

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

.step-number {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-bg-card);
  border: 2px solid var(--color-primary);
  border-radius: 50%;
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  margin: 0 auto 24px;
  box-shadow: 0 0 20px var(--color-primary-glow);
}

.step h3 {
  margin-bottom: 12px;
  color: var(--color-text);
}

.step p {
  font-size: 0.95rem;
  max-width: 280px;
  margin: 0 auto;
}

/* ============================================
   ABOUT SECTION
   ============================================ */
.about {
  padding: var(--section-padding);
  background-color: var(--color-bg-secondary);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-text h2 {
  margin-bottom: 24px;
}

.about-text p {
  font-size: 1.1rem;
  margin-bottom: 16px;
}

.about-features {
  list-style: none;
  margin-top: 32px;
}

.about-features li {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  color: var(--color-text);
}

.about-features li::before {
  content: '>';
  color: var(--color-primary);
  font-weight: bold;
  font-family: monospace;
}

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

.about-graphic {
  width: 100%;
  max-width: 400px;
  aspect-ratio: 1;
  background: linear-gradient(135deg, var(--color-bg-card), var(--color-bg));
  border: 1px solid var(--color-border);
  border-radius: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.about-graphic::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, var(--color-primary-dim), transparent 70%);
}

.about-graphic-text {
  font-family: var(--font-heading);
  font-size: 4rem;
  font-weight: 700;
  color: var(--color-primary);
  text-shadow: 0 0 40px var(--color-primary-glow);
  z-index: 1;
}

/* ============================================
   CTA SECTION
   ============================================ */
.cta-section {
  padding: var(--section-padding);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 400px;
  background: radial-gradient(ellipse, var(--color-primary-dim), transparent 70%);
  pointer-events: none;
}

.cta-content {
  position: relative;
  z-index: 1;
  max-width: 600px;
  margin: 0 auto;
}

.cta-content h2 {
  margin-bottom: 16px;
}

.cta-content p {
  font-size: 1.1rem;
  margin-bottom: 32px;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  padding: 40px 0;
  border-top: 1px solid var(--color-border);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-logo {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
}

.footer-logo span {
  color: var(--color-primary);
}

.footer-info {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.footer-info a {
  color: var(--color-primary);
  transition: opacity var(--transition-fast);
}

.footer-info a:hover {
  opacity: 0.8;
}

.footer-links {
  display: flex;
  gap: 24px;
}

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

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

/* ============================================
   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
   ============================================ */
@media (max-width: 968px) {
  .about-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about-visual {
    order: -1;
  }

  .about-graphic {
    max-width: 300px;
  }
}

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

  .nav-links,
  .nav-cta {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100vh;
    background-color: var(--color-bg);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 32px;
    transition: right var(--transition-medium);
  }

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

  .nav-menu .nav-links {
    display: flex;
    flex-direction: column;
    text-align: center;
  }

  .nav-menu .nav-cta {
    display: inline-flex;
  }

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

  .btn {
    width: 100%;
    max-width: 300px;
  }

  .steps {
    gap: 60px;
  }

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

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

  .service-card {
    padding: 24px;
  }

  .about-graphic-text {
    font-size: 3rem;
  }
}