/* =========================================================================
   PA Interview Prep — landing page styles
   Palette pulled from the app's src/theme.ts so the site matches the product.
   ========================================================================= */

:root {
  --bg: #0f1419;
  --surface: #1a212b;
  --surface-alt: #232c38;
  --border: #2d3845;
  --primary: #4f9cf9;
  --primary-dark: #2f7fe0;
  --text: #e6edf3;
  --text-muted: #9aa7b4;
  --success: #3fb950;
  --warning: #d29922;
  --danger: #f85149;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --maxw: 1080px;
  --shadow: 0 10px 40px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ---------------- Buttons ---------------- */
.btn {
  display: inline-block;
  padding: 13px 22px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.98rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.12s ease, background 0.15s ease, border-color 0.15s ease;
}
.btn:active {
  transform: translateY(1px);
}
.btn-primary {
  background: var(--primary);
  color: #06121f;
}
.btn-primary:hover {
  background: var(--primary-dark);
  color: #fff;
}
.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}
.btn-ghost:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* ---------------- Header ---------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(15, 20, 25, 0.82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
}
.brand-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #06121f;
}
.brand-name {
  font-size: 1.02rem;
}
.site-nav {
  display: flex;
  align-items: center;
  gap: 26px;
  font-size: 0.95rem;
  color: var(--text-muted);
}
.site-nav a:hover {
  color: var(--text);
}
.nav-cta {
  color: var(--primary) !important;
  font-weight: 600;
}

/* ---------------- Hero ---------------- */
.hero {
  position: relative;
  overflow: hidden;
  padding: 96px 0 80px;
  background:
    radial-gradient(1000px 500px at 70% -10%, rgba(79, 156, 249, 0.18), transparent 60%),
    radial-gradient(700px 400px at 0% 10%, rgba(79, 156, 249, 0.08), transparent 55%);
}
.hero-inner {
  max-width: 820px;
}
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--primary);
  margin: 0 0 14px;
}
.hero h1 {
  font-size: clamp(2.3rem, 6vw, 3.9rem);
  line-height: 1.07;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
}
.accent {
  color: var(--primary);
}
.lede {
  font-size: clamp(1.05rem, 2.2vw, 1.25rem);
  color: var(--text-muted);
  max-width: 640px;
  margin: 0 0 30px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 30px;
}
.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  list-style: none;
  padding: 0;
  margin: 0;
}
.hero-badges li {
  font-size: 0.85rem;
  color: var(--text-muted);
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
}

/* ---------------- Sections ---------------- */
.section {
  padding: 84px 0;
}
.section-alt {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.section-title {
  font-size: clamp(1.7rem, 4vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  text-align: center;
  margin: 0 0 14px;
}
.section-title.left {
  text-align: left;
}
.section-sub {
  text-align: center;
  color: var(--text-muted);
  max-width: 620px;
  margin: 0 auto 48px;
  font-size: 1.05rem;
}
.section-sub.left {
  text-align: left;
  margin-left: 0;
}

/* ---------------- Feature grid ---------------- */
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: transform 0.15s ease, border-color 0.15s ease;
}
.section .card {
  background: var(--surface-alt);
}
.section-alt .card {
  background: var(--bg);
}
.card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
}
.card-icon {
  font-size: 1.7rem;
  margin-bottom: 12px;
}
.card h3 {
  margin: 0 0 8px;
  font-size: 1.12rem;
}
.card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.96rem;
}

/* ---------------- Steps ---------------- */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  list-style: none;
  padding: 0;
  margin: 0;
  counter-reset: step;
}
.step {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  position: relative;
}
.step-num {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--primary);
  color: #06121f;
  font-weight: 800;
  margin-bottom: 16px;
}
.step h3 {
  margin: 0 0 8px;
  font-size: 1.12rem;
}
.step p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.96rem;
}

/* ---------------- Why ---------------- */
.why-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}
.why-list {
  list-style: none;
  padding: 0;
  margin: 8px 0 0;
  display: grid;
  gap: 18px;
}
.why-list li {
  color: var(--text-muted);
  padding-left: 28px;
  position: relative;
}
.why-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 12px;
  height: 12px;
  border-radius: 3px;
  background: var(--primary);
}
.why-list strong {
  color: var(--text);
}

.why-card {
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow);
}
.why-card-head {
  display: flex;
  gap: 16px;
  align-items: center;
  margin-bottom: 18px;
}
.score-ring {
  flex: none;
  display: grid;
  place-items: center;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  font-weight: 800;
  font-size: 1.3rem;
  color: var(--success);
  border: 3px solid var(--success);
}
.why-card-q {
  margin: 0 0 4px;
  font-weight: 600;
}
.why-card-tag {
  margin: 0;
  font-size: 0.82rem;
  color: var(--text-muted);
}
.why-card-body p {
  margin: 0 0 10px;
  font-size: 0.95rem;
  color: var(--text-muted);
}
.fb-label {
  font-weight: 700;
  font-size: 0.78rem !important;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-top: 14px !important;
}
.fb-label.good {
  color: var(--success);
}
.fb-label.tip {
  color: var(--warning);
}
.why-card-note {
  margin: 14px 0 0;
  font-size: 0.78rem;
  color: var(--text-muted);
  font-style: italic;
}

/* ---------------- CTA ---------------- */
.cta {
  background:
    radial-gradient(800px 400px at 50% 0%, rgba(79, 156, 249, 0.16), transparent 60%),
    var(--surface);
  border-top: 1px solid var(--border);
}
.cta-inner {
  text-align: center;
  max-width: 620px;
}
.cta h2 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 14px;
}
.cta p {
  color: var(--text-muted);
  margin: 0 auto 28px;
}
.signup {
  display: flex;
  gap: 10px;
  max-width: 460px;
  margin: 0 auto;
}
.signup input {
  flex: 1;
  padding: 13px 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 1rem;
}
.signup input:focus {
  outline: none;
  border-color: var(--primary);
}
.signup-msg {
  min-height: 22px;
  margin: 14px 0 0;
  font-size: 0.95rem;
  color: var(--success);
}
.signup-msg.error {
  color: var(--danger);
}
.cta-fineprint {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 10px !important;
}

/* ---------------- Footer ---------------- */
.site-footer {
  background: var(--bg);
  border-top: 1px solid var(--border);
  padding: 44px 0;
}
.footer-brand {
  font-weight: 700;
  margin: 0 0 12px;
}
.disclaimer {
  font-size: 0.82rem;
  color: var(--text-muted);
  max-width: 760px;
  margin: 0 0 14px;
}
.copyright {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin: 0;
}

/* ---------------- Responsive ---------------- */
@media (max-width: 860px) {
  .grid,
  .steps {
    grid-template-columns: 1fr 1fr;
  }
  .why-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}
@media (max-width: 620px) {
  .site-nav {
    display: none;
  }
  .grid,
  .steps {
    grid-template-columns: 1fr;
  }
  .signup {
    flex-direction: column;
  }
  .hero {
    padding: 64px 0 56px;
  }
  .section {
    padding: 60px 0;
  }
}