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

:root {
  --bg: #0a0a0f;
  --bg-elevated: #12121a;
  --bg-card: #1a1a25;
  --text: #e8e8ed;
  --text-muted: #9090a0;
  --accent: #6c5ce7;
  --accent-light: #a29bfe;
  --accent-glow: rgba(108, 92, 231, 0.3);
  --accent-warm: #fd79a8;
  --gradient: linear-gradient(135deg, #6c5ce7, #a29bfe, #fd79a8);
  --border: rgba(255, 255, 255, 0.06);
  --radius: 12px;
  --radius-lg: 20px;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-heading: 'Space Grotesk', 'Inter', sans-serif;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--accent-light);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--accent-warm);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Navigation ===== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 16px 0;
  transition: background 0.3s, backdrop-filter 0.3s;
}

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

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo:hover { color: var(--text); }

.logo-icon {
  font-size: 1.6rem;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}

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

.nav-cta {
  background: var(--accent);
  color: white !important;
  padding: 8px 20px;
  border-radius: 8px;
  font-weight: 600 !important;
  transition: background 0.2s, transform 0.2s !important;
}

.nav-cta:hover {
  background: #5a4bd4;
  color: white !important;
  transform: translateY(-1px);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  border-radius: 10px;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s;
  border: none;
}

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

.btn-primary:hover {
  background: #5a4bd4;
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 8px 32px var(--accent-glow);
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.btn-secondary:hover {
  border-color: var(--accent-light);
  color: var(--accent-light);
  transform: translateY(-2px);
}

.btn-full {
  width: 100%;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 24px 80px;
  overflow: hidden;
}

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

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
  animation: float 12s ease-in-out infinite;
}

.orb-1 {
  width: 500px;
  height: 500px;
  background: var(--accent);
  top: -10%;
  right: -5%;
  animation-delay: 0s;
}

.orb-2 {
  width: 400px;
  height: 400px;
  background: var(--accent-warm);
  bottom: -5%;
  left: -5%;
  animation-delay: -4s;
}

.orb-3 {
  width: 300px;
  height: 300px;
  background: #00cec9;
  top: 40%;
  left: 30%;
  opacity: 0.2;
  animation-delay: -8s;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -30px) scale(1.05); }
  66% { transform: translate(-20px, 20px) scale(0.95); }
}

.grid-overlay {
  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;
}

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

.hero-tag {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--accent-light);
  margin-bottom: 24px;
  padding: 6px 16px;
  border: 1px solid rgba(162, 155, 254, 0.3);
  border-radius: 100px;
}

.hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

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

.hero-sub {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 650px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

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

.hero-stats {
  display: flex;
  gap: 48px;
  justify-content: center;
  flex-wrap: wrap;
  padding-top: 48px;
  border-top: 1px solid var(--border);
}

.stat {
  text-align: center;
}

.stat-number {
  display: block;
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 700;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  max-width: 180px;
  display: block;
}

/* ===== Sections ===== */
.section {
  padding: 120px 0;
}

.section-dark {
  background: var(--bg-elevated);
}

.section-tag {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--accent-light);
  margin-bottom: 16px;
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 48px;
  letter-spacing: -0.02em;
}

.section-subtitle {
  color: var(--text);
  font-size: 1.25rem;
  line-height: 1.8;
  max-width: 800px;
  margin-top: -32px;
  margin-bottom: 64px;
}

.section-subtitle em {
  color: var(--accent-light);
  font-style: normal;
  font-weight: 600;
}

/* ===== Mission ===== */
.mission-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.mission-text p {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: 20px;
}

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

.brain-graphic {
  position: relative;
  width: 320px;
  height: 320px;
}

.brain-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(108, 92, 231, 0.2);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation: ring-pulse 6s ease-in-out infinite;
}

.ring-1 { width: 200px; height: 200px; animation-delay: 0s; }
.ring-2 { width: 260px; height: 260px; animation-delay: -2s; border-color: rgba(162, 155, 254, 0.15); }
.ring-3 { width: 320px; height: 320px; animation-delay: -4s; border-color: rgba(253, 121, 168, 0.1); }

@keyframes ring-pulse {
  0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 1; }
  50% { transform: translate(-50%, -50%) scale(1.08); opacity: 0.6; }
}

.brain-core {
  position: absolute;
  width: 80px;
  height: 80px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--gradient);
  border-radius: 50%;
  opacity: 0.8;
  animation: core-glow 3s ease-in-out infinite;
}

@keyframes core-glow {
  0%, 100% { box-shadow: 0 0 30px var(--accent-glow), 0 0 60px var(--accent-glow); }
  50% { box-shadow: 0 0 50px var(--accent-glow), 0 0 100px var(--accent-glow); }
}

.pulse-dot {
  position: absolute;
  width: 8px;
  height: 8px;
  background: var(--accent-light);
  border-radius: 50%;
  animation: dot-orbit 8s linear infinite;
}

.dot-1 { top: 50%; left: 0; animation-delay: 0s; }
.dot-2 { top: 0; left: 50%; animation-delay: -2s; }
.dot-3 { top: 50%; right: 0; animation-delay: -4s; }
.dot-4 { bottom: 0; left: 50%; animation-delay: -6s; }

@keyframes dot-orbit {
  0% { opacity: 0; transform: scale(0.5); }
  20% { opacity: 1; transform: scale(1); }
  80% { opacity: 1; transform: scale(1); }
  100% { opacity: 0; transform: scale(0.5); }
}

/* ===== Vision ===== */
.vision-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.vision-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  transition: transform 0.3s, border-color 0.3s;
}

.vision-card:hover {
  transform: translateY(-4px);
  border-color: rgba(108, 92, 231, 0.3);
}

.vision-card.featured {
  border-color: var(--accent);
  box-shadow: 0 8px 40px var(--accent-glow);
}

.vision-icon {
  font-size: 2rem;
  margin-bottom: 20px;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.vision-card h3 {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.vision-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ===== Focus ===== */
.focus-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.focus-item {
  padding: 36px 28px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: transform 0.3s, border-color 0.3s, background 0.3s;
}

.focus-item:hover {
  transform: translateY(-4px);
  border-color: rgba(108, 92, 231, 0.3);
  background: var(--bg-elevated);
}

.focus-number {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 700;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 16px;
  line-height: 1;
}

.focus-item h3 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.focus-item p {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.7;
}

/* ===== Join ===== */
.join-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.join-text p {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: 24px;
}

.join-perks {
  list-style: none;
}

.join-perks li {
  position: relative;
  padding-left: 28px;
  color: var(--text-muted);
  margin-bottom: 12px;
  font-size: 0.95rem;
}

.join-perks li::before {
  content: "\2713";
  position: absolute;
  left: 0;
  color: var(--accent-light);
  font-weight: 700;
}

.join-form-wrapper {
  position: sticky;
  top: 100px;
}

.join-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
}

.join-form h3 {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 600;
  margin-bottom: 28px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.required { color: var(--accent-warm); }

.form-group input,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color 0.2s;
  appearance: none;
  -webkit-appearance: none;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-group input::placeholder {
  color: #555;
}

.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='https://www.w3.org/2000/svg' width='12' height='12' fill='%239090a0' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

.form-group select option {
  background: var(--bg-card);
  color: var(--text);
}

.form-note {
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 12px;
}

.form-message {
  margin-top: 16px;
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 0.9rem;
  text-align: center;
  display: none;
}

.form-message.success {
  display: block;
  background: rgba(0, 206, 201, 0.1);
  border: 1px solid rgba(0, 206, 201, 0.3);
  color: #00cec9;
}

.form-message.error {
  display: block;
  background: rgba(253, 121, 168, 0.1);
  border: 1px solid rgba(253, 121, 168, 0.3);
  color: var(--accent-warm);
}

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

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand {
  max-width: 360px;
}

.footer-brand .logo {
  margin-bottom: 16px;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

.footer-links {
  display: flex;
  gap: 60px;
}

.footer-col h4 {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.footer-col a {
  display: block;
  color: var(--text-muted);
  font-size: 0.88rem;
  margin-bottom: 10px;
}

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

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

.footer-bottom p {
  color: var(--text-muted);
  font-size: 0.82rem;
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .mission-grid,
  .join-wrapper {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .vision-cards,
  .focus-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .hero-stats {
    gap: 32px;
  }

  .footer-inner {
    flex-direction: column;
  }

  .nav-links a:not(.nav-cta) {
    display: none;
  }
}

@media (max-width: 600px) {
  .hero h1 {
    font-size: 2rem;
  }

  .section {
    padding: 80px 0;
  }

  .hero {
    padding: 100px 16px 60px;
  }
}