/* ==========================================
   AquaSense Landing Page - Modern Dark Theme
   ========================================== */

/* CSS Variables */
:root {
  /* Colors */
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-tertiary: #1a1a24;
  --accent-cyan: #00d4ff;
  --accent-teal: #00ffc8;
  --accent-blue: #4f46e5;
  --accent-purple: #8b5cf6;
  --text-primary: #ffffff;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border-color: rgba(255, 255, 255, 0.08);
  --glow-color: rgba(0, 212, 255, 0.4);
  --glow-teal: rgba(0, 255, 200, 0.3);

  /* Typography */
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;

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

  /* Effects */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  --blur-amount: 100px;
}

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

html {
  scroll-behavior: smooth;
}

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

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

.gradient-text {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-teal));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.highlight {
  color: var(--accent-cyan);
  font-weight: 600;
}

/* Reveal Animation */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  border-radius: 12px;
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
}

.btn-primary {
  background: linear-gradient(135deg, #0891b2, #0d9488);
  color: var(--text-primary);
  border: none;
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  background: linear-gradient(135deg, #06b6d4, #14b8a6);
  box-shadow: 0 0 30px rgba(0, 212, 255, 0.6), 0 10px 40px rgba(0, 212, 255, 0.3);
}

.btn-glow {
  animation: glow-pulse 3s ease-in-out infinite;
}

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

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--accent-cyan);
}

.btn-large {
  padding: 18px 36px;
  font-size: 16px;
}

@keyframes glow-pulse {
  0%, 100% {
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
  }
  50% {
    box-shadow: 0 0 40px rgba(0, 212, 255, 0.5), 0 0 60px rgba(0, 255, 200, 0.2);
  }
}

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

.nav.scrolled {
  background: rgba(10, 10, 15, 0.9);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  padding: 16px 0;
}

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

.nav-logo img {
  height: 40px;
  width: auto;
  border: 3px solid white;
  border-radius: 10px;
  box-shadow: 0 0 4px 1px #ffffff99;
}

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

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  transition: color var(--transition-fast);
}

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

.nav-cta {
  padding: 10px 20px;
  font-size: 14px;
}

.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: var(--text-primary);
  transition: all var(--transition-base);
}

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

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

.hero-gradient {
  position: absolute;
  top: -50%;
  left: -20%;
  width: 80%;
  height: 100%;
  background: radial-gradient(ellipse, rgba(0, 212, 255, 0.15) 0%, transparent 60%);
  filter: blur(60px);
}

.hero-gradient::after {
  content: '';
  position: absolute;
  top: 30%;
  right: -30%;
  width: 60%;
  height: 80%;
  background: radial-gradient(ellipse, rgba(0, 255, 200, 0.1) 0%, transparent 60%);
  filter: blur(80px);
}

.hero-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 80% 50% at 50% 50%, black 40%, transparent 100%);
}

.hero-container {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 500;
  color: var(--accent-cyan);
  margin-bottom: 24px;
}

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

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.2); }
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(40px, 5vw, 64px);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 24px;
}

.hero-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 500px;
  margin-bottom: 32px;
}

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

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

.hero-image-wrapper {
  position: relative;
  animation: float 6s ease-in-out infinite;
}

.hero-image {
  max-width: 100%;
  height: auto;
  border-radius: 20px;
}

.hero-image-glow {
  position: absolute;
  inset: -20%;
  background: radial-gradient(ellipse, rgba(0, 212, 255, 0.3) 0%, transparent 70%);
  filter: blur(40px);
  z-index: -1;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-20px); }
}

.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  color: var(--text-muted);
  font-size: 13px;
}

.scroll-indicator {
  width: 24px;
  height: 40px;
  border: 2px solid var(--border-color);
  border-radius: 12px;
  position: relative;
}

.scroll-indicator::after {
  content: '';
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  background: var(--accent-cyan);
  border-radius: 2px;
  animation: scroll-bounce 2s ease-in-out infinite;
}

@keyframes scroll-bounce {
  0%, 100% { top: 8px; opacity: 1; }
  50% { top: 20px; opacity: 0.3; }
}

/* Sections Common */
.section {
  padding: var(--section-padding) 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 60px;
}

.section-tag {
  display: inline-block;
  padding: 6px 14px;
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 500;
  color: var(--accent-cyan);
  margin-bottom: 16px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 700;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
}

/* Problem Section */
.problem {
  background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 60px;
}

.problem-card {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 32px;
  transition: all var(--transition-base);
}

.problem-card:hover {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(0, 212, 255, 0.3);
  transform: translateY(-4px);
}

.problem-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(0, 255, 200, 0.1));
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.problem-icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--accent-cyan);
}

.problem-card h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 12px;
}

.problem-card p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.7;
}

.problem-impact {
  display: flex;
  justify-content: center;
  gap: 60px;
}

.impact-card {
  text-align: center;
}

.impact-number {
  font-family: var(--font-display);
  font-size: 48px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-teal));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.impact-number::after {
  font-size: 32px;
}

.impact-number-percent::after{
  content: '%';
  font-size: 32px;
}

.impact-number-days::after{
  content: ' days';
  font-size: 24px;
}

.impact-label {
  color: var(--text-secondary);
  font-size: 14px;
  margin-top: 8px;
}

/* Solution Section */
.solution {
  background: var(--bg-secondary);
}

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

.solution-content .section-header {
  text-align: left;
  margin: 0 0 24px;
}

.solution-patent {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.patent-badge {
  padding: 6px 12px;
  background: rgba(139, 92, 246, 0.1);
  border: 1px solid rgba(139, 92, 246, 0.3);
  border-radius: 8px;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent-purple);
}

.solution-patent p {
  color: var(--text-secondary);
  font-size: 14px;
}

.solution-description {
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.8;
  margin-bottom: 32px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  font-size: 14px;
  font-weight: 500;
}

.feature-item svg {
  width: 20px;
  height: 20px;
  stroke: var(--accent-teal);
  flex-shrink: 0;
}

.solution-visual {
  display: flex;
  justify-content: center;
}

.solution-image-wrapper {
  position: relative;
}

.solution-image {
  max-width: 100%;
  border-radius: 20px;
  box-shadow: 0 0 13px 1px #ffffff99;
}

.solution-image-glow {
  position: absolute;
  inset: -30%;
  background: radial-gradient(ellipse, rgba(0, 212, 255, 0.2) 0%, transparent 70%);
  filter: blur(60px);
  z-index: -1;
}

/* Market Section */
.market {
  background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
}

.market-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 60px;
}

.stat-card {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 40px;
  text-align: center;
  transition: all var(--transition-base);
}

.stat-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 212, 255, 0.3);
}

.stat-card.featured {
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(0, 255, 200, 0.05));
  border-color: rgba(0, 212, 255, 0.3);
}

.stat-number {
  font-family: var(--font-display);
  font-size: 56px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-teal));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.stat-label {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 8px 0;
}

.stat-description {
  color: var(--text-secondary);
  font-size: 14px;
}

.market-species {
  text-align: center;
}

.market-species h3 {
  font-family: var(--font-display);
  font-size: 24px;
  margin-bottom: 32px;
}

.species-grid {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.species-card {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 20px 32px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  transition: all var(--transition-base);
}

.species-card:hover {
  border-color: var(--accent-cyan);
  background: rgba(0, 212, 255, 0.05);
}

.species-name {
  font-weight: 600;
  font-size: 16px;
}

.species-volume {
  color: var(--accent-cyan);
  font-size: 14px;
}

/* Team Section */
.team {
  background: var(--bg-primary);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
  max-width: 900px;
  margin: 0 auto;
}

.team-card {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  overflow: hidden;
  transition: all var(--transition-base);
}

.team-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 212, 255, 0.3);
}

.team-image-wrapper {
  position: relative;
  height: 280px;
  overflow: hidden;
}

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

.team-image-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, var(--bg-secondary) 100%);
}

.team-info {
  padding: 24px;
}

.team-info h3 {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 4px;
}

.team-role {
  display: inline-block;
  color: var(--accent-cyan);
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 12px;
}

.team-info p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.6;
}

/* Contact Section */
.contact {
  background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.contact-wrapper {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  border-radius: 32px;
  padding: 80px;
  position: relative;
  overflow: hidden;
}

.contact-content {
  position: relative;
  z-index: 1;
  max-width: 600px;
}

.contact-content .section-tag {
  margin-bottom: 16px;
}

.contact-content .section-title {
  margin-bottom: 16px;
}

.contact-content > p {
  color: var(--text-secondary);
  font-size: 18px;
  margin-bottom: 32px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 32px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 16px;
  color: var(--text-primary);
  text-decoration: none;
  font-size: 16px;
  transition: color var(--transition-fast);
}

.contact-item:hover {
  color: var(--accent-cyan);
}

.contact-item svg {
  width: 24px;
  height: 24px;
  stroke: var(--accent-cyan);
}

.contact-glow {
  position: absolute;
  top: -50%;
  right: -20%;
  width: 60%;
  height: 150%;
  background: radial-gradient(ellipse, rgba(0, 212, 255, 0.15) 0%, transparent 60%);
  filter: blur(80px);
}

/* Footer */
.footer {
  background: var(--bg-secondary);
  padding: 60px 0 30px;
  border-top: 1px solid var(--border-color);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--border-color);
}

.footer-brand {
  max-width: 300px;
}

.footer-logo {
  height: 36px;
  margin-bottom: 12px;
  border: 3px solid white;
  border-radius: 10px;
  box-shadow: 0 0 4px 1px #ffffff99;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 14px;
}

.footer-links {
  display: flex;
  gap: 32px;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  padding-top: 30px;
  text-align: center;
}

.footer-bottom p {
  color: var(--text-muted);
  font-size: 13px;
}

/* Mobile Styles */
@media (max-width: 1024px) {
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-content {
    order: 1;
  }

  .hero-visual {
    order: 0;
    margin-bottom: 40px;
  }

  .hero-subtitle {
    margin-left: auto;
    margin-right: auto;
  }

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

  .solution-grid {
    grid-template-columns: 1fr;
    gap: 60px;
  }

  .solution-content .section-header {
    text-align: center;
  }

  .solution-patent {
    justify-content: center;
  }

  .solution-description {
    text-align: center;
  }
}

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

  .nav-links {
    position: fixed;
    top: 0;
    right: 0;
    width: 280px;
    height: 100vh;
    background: var(--bg-secondary);
    flex-direction: column;
    padding: 100px 40px 40px;
    gap: 24px;
    transform: translateX(100%);
    transition: transform var(--transition-base);
    border-left: 1px solid var(--border-color);
  }

  .nav-links.active {
    transform: translateX(0);
  }

  .nav-cta {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

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

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

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

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

  .problem-impact {
    flex-direction: column;
    gap: 32px;
  }

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

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

  .contact-wrapper {
    padding: 40px 24px;
  }

  .footer-content {
    flex-direction: column;
    gap: 32px;
    text-align: center;
  }

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

  .hero-scroll {
    display: none;
  }

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