/* MARK: - Tudo Company Site — Global Styles
   Purpose: Shared styles for tudolabs.com public pages.
   Design language: Premium black (#0A0A0A), Tudo blue (#379AE6),
   SF Pro typography, cinematic spacing, atmospheric feel. */

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

:root {
  --tudo-blue: #379AE6;
  --tudo-blue-light: #5BB0F0;
  --tudo-blue-dark: #2A7BC0;
  --bg: #0A0A0A;
  --bg-card: #141414;
  --bg-elevated: #1C1C1C;
  --border: #2A2A2A;
  --text-primary: #FFFFFF;
  --text-secondary: #A0A0A0;
  --text-muted: #666666;
  --radius: 16px;
  --radius-sm: 10px;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
    "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

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

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

/* MARK: - Layout */
.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

/* MARK: - Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 20px 0;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background: rgba(10, 10, 10, 0.8);
  border-bottom: 1px solid rgba(42, 42, 42, 0.5);
}

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

.nav-logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.nav-logo span { color: var(--tudo-blue); }

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
}

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

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

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

.hero::before {
  content: "";
  position: absolute;
  top: 20%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(55, 154, 230, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--tudo-blue);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin-bottom: 24px;
}

.hero h1 .gradient {
  background: linear-gradient(135deg, var(--tudo-blue), var(--tudo-blue-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto 48px;
  line-height: 1.7;
}

/* MARK: - Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.25s ease;
}

.btn-primary {
  background: var(--tudo-blue);
  color: #fff;
}

.btn-primary:hover {
  background: var(--tudo-blue-light);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 8px 32px rgba(55, 154, 230, 0.3);
}

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

.btn-secondary:hover {
  background: var(--bg-card);
  border-color: var(--text-muted);
  transform: translateY(-1px);
}

.btn-group {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
}

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

.section-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--tudo-blue);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.section h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.section p.lead {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 600px;
  line-height: 1.7;
}

/* MARK: - Layer Cards (5 Layers) */
.layers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 48px;
}

.layer-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.layer-card:hover {
  border-color: rgba(55, 154, 230, 0.3);
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

.layer-number {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--tudo-blue);
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}

.layer-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.layer-card p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* MARK: - Stats Row */
.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin-top: 64px;
}

.stat {
  text-align: center;
  padding: 32px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.stat-value {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--tudo-blue);
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* MARK: - Steps (How It Works) */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 32px;
  margin-top: 48px;
  counter-reset: step;
}

.step {
  position: relative;
  padding: 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.step::before {
  counter-increment: step;
  content: counter(step);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--tudo-blue);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.step h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.step p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* MARK: - CTA Banner */
.cta-banner {
  text-align: center;
  padding: 80px 24px;
  background: linear-gradient(180deg, var(--bg-card) 0%, var(--bg) 100%);
  border-top: 1px solid var(--border);
}

.cta-banner h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 16px;
}

.cta-banner p {
  color: var(--text-secondary);
  margin-bottom: 32px;
  font-size: 1.1rem;
}

/* MARK: - Footer */
.footer {
  padding: 48px 0;
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 32px;
  margin-bottom: 24px;
  list-style: none;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.85rem;
}

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

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

/* MARK: - Page Header (inner pages) */
.page-header {
  padding: 160px 0 80px;
  text-align: center;
}

.page-header h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}

.page-header p {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto;
}

/* MARK: - Content Blocks */
.content-block {
  margin-bottom: 64px;
}

.content-block h2 {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.content-block p {
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 720px;
}

/* MARK: - Revenue Highlight */
.revenue-highlight {
  background: linear-gradient(135deg, rgba(55, 154, 230, 0.1) 0%, rgba(55, 154, 230, 0.03) 100%);
  border: 1px solid rgba(55, 154, 230, 0.2);
  border-radius: var(--radius);
  padding: 40px;
  margin: 48px 0;
  text-align: center;
}

.revenue-highlight .big-number {
  font-size: 4rem;
  font-weight: 800;
  color: var(--tudo-blue);
  line-height: 1;
}

.revenue-highlight .context {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-top: 8px;
}

/* MARK: - Auth Card */
.auth-card {
  max-width: 420px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 48px 40px;
  text-align: center;
}

.auth-card h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.auth-card p {
  color: var(--text-secondary);
  margin-bottom: 32px;
  font-size: 0.95rem;
}

.auth-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  width: 100%;
  padding: 14px 24px;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.2s;
  margin-bottom: 12px;
}

.auth-btn:hover {
  background: var(--bg-card);
  border-color: var(--text-muted);
}

.auth-btn svg { width: 20px; height: 20px; }

.auth-divider {
  color: var(--text-muted);
  font-size: 0.8rem;
  margin: 20px 0;
}

/* MARK: - Profile Page */
.profile-container {
  max-width: 480px;
  margin: 0 auto;
  padding: 160px 24px 80px;
  text-align: center;
}

.symbiote-frame {
  width: 280px;
  height: 280px;
  margin: 0 auto 32px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 2px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.symbiote-frame::after {
  content: "";
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  background: conic-gradient(from 0deg, transparent, rgba(55, 154, 230, 0.3), transparent);
  z-index: -1;
  animation: rotate 8s linear infinite;
}

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

.symbiote-placeholder {
  font-size: 5rem;
  opacity: 0.15;
}

.profile-name {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.profile-handle {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 32px;
}

.state-chips {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.state-chip {
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

.state-chip.active { border-color: var(--tudo-blue); color: var(--tudo-blue); }

.direction-label {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 48px;
}

.profile-cta {
  margin-top: 32px;
}

/* MARK: - Email Capture */
.email-capture {
  display: flex;
  gap: 12px;
  max-width: 440px;
  margin: 0 auto;
}

.email-capture input {
  flex: 1;
  padding: 14px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-primary);
  font-size: 1rem;
  outline: none;
  transition: border-color 0.2s;
}

.email-capture input::placeholder { color: var(--text-muted); }
.email-capture input:focus { border-color: var(--tudo-blue); }

/* MARK: - Responsive */
@media (max-width: 768px) {
  .nav-links { gap: 20px; }
  .hero { padding: 100px 20px 60px; }
  .section { padding: 80px 0; }
  .layers-grid { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: 1fr 1fr; }
  .steps { grid-template-columns: 1fr; }
  .email-capture { flex-direction: column; }
  .btn-group { flex-direction: column; align-items: center; }
}

@media (max-width: 480px) {
  .nav-links a { font-size: 0.8rem; }
  .stats-row { grid-template-columns: 1fr; }
  .auth-card { padding: 32px 24px; }
}