/* ==========================================
   Peak.Energy — Global Stylesheet
   Brand: Module 25 Identity Guide
   ========================================== */

:root {
  --bg: #0A0E1A;
  --surface: #141927;
  --surface-2: #1C2236;
  --slate-450: #2A3043;
  --border: #252B40;
  --text: #F5F7FA;
  --text-dim: #9CA3AF;
  --text-muted: #6B7280;
  --lime: #A7F432;
  --orange: #FF6B35;
  --mint: #7FE8C9;
  --success: #22C55E;
  --warn: #F59E0B;
  --error: #EF4444;
  --display: 'Bricolage Grotesque', system-ui, sans-serif;
  --body: 'Inter', system-ui, sans-serif;
  --mono: 'JetBrains Mono', 'SF Mono', monospace;
  --serif: 'Instrument Serif', Georgia, serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--lime); text-decoration: none; transition: opacity 0.2s; }
a:hover { opacity: 0.8; }

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

/* ===== NAVIGATION ===== */
.nav {
  position: sticky;
  top: 0;
  background: rgba(10, 14, 26, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
}
.nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 18px 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.brand {
  font-family: var(--display);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: -0.02em;
  color: var(--text);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
}
.brand-dot {
  width: 8px; height: 8px;
  background: var(--lime);
  border-radius: 2px;
  box-shadow: 0 0 12px rgba(167, 244, 50, 0.6);
}
.nav-links {
  display: flex;
  gap: 28px;
  align-items: center;
}
.nav-link {
  font-family: var(--body);
  font-size: 14px;
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.2s;
}
.nav-link:hover { color: var(--lime); }
.nav-cta {
  font-family: var(--body);
  font-weight: 600;
  font-size: 14px;
  padding: 10px 18px;
  background: var(--lime);
  color: var(--bg);
  text-decoration: none;
  border-radius: 6px;
  transition: all 0.2s;
}
.nav-cta:hover {
  background: #B8FF52;
  transform: translateY(-1px);
}

/* ===== HERO ===== */
.hero {
  padding: 80px 32px 64px;
  max-width: 1280px;
  margin: 0 auto;
  text-align: center;
  position: relative;
}
.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--lime);
  margin-bottom: 24px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  border: 1px solid rgba(167, 244, 50, 0.25);
  border-radius: 100px;
  background: rgba(167, 244, 50, 0.05);
}
h1.page-title {
  font-family: var(--display);
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.04em;
  margin-bottom: 24px;
}
h1.page-title em {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  color: var(--lime);
}
.page-sub {
  font-size: 19px;
  line-height: 1.5;
  color: var(--text-dim);
  max-width: 720px;
  margin: 0 auto 40px;
}

/* ===== SECTIONS ===== */
.section {
  padding: 80px 32px;
  max-width: 1280px;
  margin: 0 auto;
  position: relative;
}
.section-num {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--text-muted);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.section-num::before {
  content: '';
  width: 32px;
  height: 1px;
  background: var(--lime);
}
.section-title {
  font-family: var(--display);
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 20px;
  max-width: 880px;
}
.section-title em {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  color: var(--lime);
}
.section-lede {
  font-size: 18px;
  color: var(--text-dim);
  max-width: 720px;
  line-height: 1.6;
  margin-bottom: 48px;
}

/* ===== BUTTONS ===== */
.btn {
  font-family: var(--body);
  font-weight: 600;
  font-size: 15px;
  padding: 14px 26px;
  border-radius: 8px;
  text-decoration: none;
  transition: all 0.2s;
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.btn-primary { background: var(--lime); color: var(--bg); }
.btn-primary:hover {
  background: #B8FF52;
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(167, 244, 50, 0.25);
}
.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover {
  border-color: var(--lime);
  color: var(--lime);
}

/* ===== CARD GRID ===== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px;
  transition: all 0.3s;
}
.card:hover {
  border-color: rgba(167, 244, 50, 0.3);
  transform: translateY(-4px);
}
.card h3 {
  font-family: var(--display);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}
.card p {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.6;
}

/* ===== EMAIL SIGNUP ===== */
.email-signup {
  background: linear-gradient(135deg, var(--surface) 0%, var(--surface-2) 100%);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.email-signup::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top, rgba(167, 244, 50, 0.05), transparent 60%);
  pointer-events: none;
}
.email-signup > * { position: relative; }
.email-signup h3 {
  font-family: var(--display);
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}
.email-signup h3 em {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  color: var(--lime);
}
.email-signup p {
  color: var(--text-dim);
  margin-bottom: 28px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}
.email-form {
  display: flex;
  gap: 12px;
  max-width: 480px;
  margin: 0 auto;
  flex-wrap: wrap;
  justify-content: center;
}
.email-input {
  flex: 1;
  min-width: 240px;
  padding: 14px 18px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-family: var(--body);
  font-size: 15px;
}
.email-input:focus {
  outline: none;
  border-color: var(--lime);
}

/* ===== FOOTER ===== */
footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 64px 32px 32px;
  margin-top: 80px;
}
.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}
.footer-col h4 {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 16px;
}
.footer-col a {
  display: block;
  font-size: 14px;
  color: var(--text-dim);
  text-decoration: none;
  padding: 6px 0;
  transition: color 0.2s;
}
.footer-col a:hover { color: var(--lime); }
.footer-brand-text {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.6;
  max-width: 320px;
}
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 980px) {
  .nav-inner { padding: 16px 20px; }
  .nav-links .nav-link { display: none; }
  .hero { padding: 56px 20px 48px; }
  .section { padding: 56px 20px; }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .email-signup { padding: 32px 20px; }
}

@media (max-width: 600px) {
  .footer-grid { grid-template-columns: 1fr; }
}