/* ================================
   AI Dad — Landing Page Styles
   Mobile-first, clean, approachable
   ================================ */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg:         #0a0a0f;
  --bg-card:    #13131a;
  --bg-card-2:  #1a1a24;
  --accent:     #f59e0b;
  --accent-dim: #92400e;
  --text:       #f1f5f9;
  --text-muted: #94a3b8;
  --border:     #1e1e2e;
  --radius:     12px;
  --radius-lg:  20px;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ---- UTILS ---- */
.container {
  width: 100%;
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 80px 0;
}

.section-label {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}

h2 {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
}

p {
  color: var(--text-muted);
  margin-bottom: 16px;
}

p:last-child {
  margin-bottom: 0;
}

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

/* ---- BUTTONS ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: #000;
}

.btn-primary:hover {
  background: #fbbf24;
  transform: translateY(-1px);
}

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

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn-large {
  padding: 16px 36px;
  font-size: 17px;
  border-radius: 10px;
}

/* ---- NAV ---- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 15, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.nav-logo-link {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.nav-logo-img {
  width: 36px;
  height: 36px;
  border-radius: 50%;
}

.nav-logo {
  font-size: 18px;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.02em;
}

.nav-socials {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-socials a {
  color: var(--text-muted);
  transition: color 0.2s;
  display: flex;
  align-items: center;
}

.nav-socials a:hover {
  color: var(--accent);
}

/* ---- HERO ---- */
.hero {
  min-height: 90vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 80px 20px 60px;
  position: relative;
  background: radial-gradient(ellipse 80% 50% at 50% -10%, rgba(245, 158, 11, 0.12), transparent);
}

.hero-logo {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  margin-bottom: 28px;
  border: 2px solid rgba(245, 158, 11, 0.3);
  box-shadow: 0 0 40px rgba(245, 158, 11, 0.15);
}

.badge {
  display: inline-block;
  background: rgba(245, 158, 11, 0.1);
  color: var(--accent);
  border: 1px solid rgba(245, 158, 11, 0.3);
  padding: 6px 16px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.05em;
  margin-bottom: 28px;
}

.hero-title {
  font-size: clamp(2.2rem, 7vw, 4.5rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
  color: var(--text);
}

.hero-sub {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: var(--text-muted);
  max-width: 580px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

.hero-ctas {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}

.hero-scroll-hint {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--text-muted);
  font-size: 20px;
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(6px); }
}

/* ---- ABOUT ---- */
.about {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
}

.about-text h2 {
  margin-bottom: 20px;
}

.about-text p strong {
  color: var(--text);
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.stat-card {
  background: var(--bg-card-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 16px;
  text-align: center;
}

.stat-number {
  display: block;
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 6px;
}

.stat-label {
  font-size: 12px;
  color: var(--text-muted);
}

/* ---- PILLARS ---- */
.pillars h2 {
  margin-bottom: 40px;
}

.pillars-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.pillar-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color 0.2s;
}

.pillar-card:hover {
  border-color: var(--accent);
}

.pillar-icon {
  font-size: 28px;
  margin-bottom: 14px;
}

.pillar-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}

.pillar-card p {
  font-size: 14px;
  margin: 0;
}

/* ---- CURRENT BUILD ---- */
.build {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.build-card {
  background: var(--bg-card-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
  max-width: 700px;
}

.build-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: #22c55e;
  margin-bottom: 16px;
}

.status-dot {
  width: 8px;
  height: 8px;
  background: #22c55e;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.4; }
}

.build-card h2 {
  margin-bottom: 16px;
  font-size: clamp(1.3rem, 3vw, 1.8rem);
}

.build-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 20px 0 28px;
}

.tag {
  background: rgba(245, 158, 11, 0.1);
  color: var(--accent);
  border: 1px solid rgba(245, 158, 11, 0.25);
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
}

/* ---- PROBLEM ---- */
.problem {
  text-align: center;
  background: radial-gradient(ellipse 80% 60% at 50% 50%, rgba(245, 158, 11, 0.07), transparent);
}

.problem-inner {
  max-width: 640px;
}

.problem h2 {
  margin-bottom: 16px;
}

.problem-sub {
  font-size: 1rem;
  margin-bottom: 32px;
}

.problem-note {
  margin-top: 14px;
  font-size: 13px;
  color: var(--text-muted);
}

/* ---- NEWSLETTER ---- */
.newsletter {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  text-align: center;
}

.newsletter-inner {
  max-width: 560px;
}

.newsletter h2 {
  margin-bottom: 12px;
}

.email-form {
  display: flex;
  gap: 10px;
  margin-top: 28px;
  flex-wrap: wrap;
  justify-content: center;
}

.email-form input {
  flex: 1;
  min-width: 220px;
  padding: 12px 16px;
  background: var(--bg-card-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 15px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s;
}

.email-form input:focus {
  border-color: var(--accent);
}

.email-form input::placeholder {
  color: var(--text-muted);
}

.form-note {
  margin-top: 12px;
  font-size: 13px;
}

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

.footer-logo {
  display: block;
  font-size: 22px;
  font-weight: 900;
  color: var(--accent);
  margin-bottom: 4px;
}

.footer-tagline {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.footer-socials {
  display: flex;
  gap: 24px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.footer-socials a {
  font-size: 14px;
  color: var(--text-muted);
  transition: color 0.2s;
}

.footer-socials a:hover {
  color: var(--accent);
}

.footer-copy {
  font-size: 12px;
  color: var(--text-muted);
}

/* ================================
   RESPONSIVE — tablet and up
   ================================ */
@media (min-width: 640px) {
  .pillars-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .about-grid {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }
}

@media (min-width: 900px) {
  .pillars-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .about-grid {
    grid-template-columns: 3fr 2fr;
    gap: 64px;
  }
}