/* ============================================
   Academic Ace — Shared Marketing / Public Styles
   Dark theme used across service, blog, samples,
   guarantee and other public-facing pages.
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:ital,wght@0,400;0,500;0,600;0,700;0,800;0,900;1,400&display=swap');

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

:root {
  --primary: #3b82f6;
  --primary-dark: #2563eb;
  --accent: #22c55e;
  --dark: #ffffff;
  --gray: #b0bec8;
  --border: #152030;
  --white: #ffffff;
  --bg: #000000;
  --card: #080e1c;
}

body { font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif; color: var(--dark); background: var(--bg); line-height: 1.6; -webkit-font-smoothing: antialiased; }
a { text-decoration: none; color: inherit; }

/* NAV */
nav {
  position: sticky; top: 0; z-index: 100;
  background: #040c1a; border-bottom: 1px solid #0d1b2e;
  padding: 14px 32px; display: flex; align-items: center; justify-content: space-between;
}
.logo { font-size: 1.4rem; font-weight: 800; color: var(--primary); }
.logo span { color: var(--accent); }
.nav-links { display: flex; gap: 28px; font-size: 0.9rem; font-weight: 500; }
.nav-links a { color: #94a3b8; transition: color 0.2s; }
.nav-links a:hover { color: var(--primary); }
.nav-right { display: flex; gap: 12px; align-items: center; }
.nav-login { font-size: 0.9rem; font-weight: 600; color: var(--primary); }
.nav-cta { background: var(--primary); color: var(--white); padding: 10px 20px; border-radius: 8px; font-weight: 600; font-size: 0.9rem; transition: background 0.2s; }
.nav-cta:hover { background: var(--primary-dark); }
@media (max-width: 700px) { .nav-links { display: none; } nav { padding: 12px 16px; } }

/* HERO */
.hero {
  background: linear-gradient(135deg, #050c1e 0%, #091525 100%);
  color: var(--white); padding: 88px 24px 72px; text-align: center;
}
.hero-badge {
  display: inline-block; background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2); color: #bfdbfe;
  padding: 6px 16px; border-radius: 999px; font-size: 0.8rem; font-weight: 600;
  margin-bottom: 22px; letter-spacing: 0.05em;
}
.hero h1 { font-size: clamp(1.9rem, 4.5vw, 3rem); font-weight: 900; line-height: 1.15; margin-bottom: 16px; }
.hero h1 span { color: #fbbf24; }
.hero-sub { font-size: 1.05rem; color: #bfdbfe; max-width: 560px; margin: 0 auto 32px; }
.hero-btns { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.btn-primary { background: #fbbf24; color: #111; padding: 14px 28px; border-radius: 10px; font-weight: 800; font-size: 0.95rem; transition: transform 0.15s; display: inline-block; }
.btn-primary:hover { transform: translateY(-2px); }
.btn-ghost { background: rgba(255,255,255,0.1); color: #fff; padding: 14px 28px; border-radius: 10px; font-weight: 600; font-size: 0.95rem; border: 1px solid rgba(255,255,255,0.3); transition: background 0.2s; display: inline-block; }
.btn-ghost:hover { background: rgba(255,255,255,0.18); }

/* SECTIONS */
section { padding: 72px 24px; }
.container { max-width: 1000px; margin: 0 auto; }
.container-narrow { max-width: 760px; margin: 0 auto; }
.section-label { text-align: center; font-size: 0.78rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--primary); margin-bottom: 10px; }
.section-title { text-align: center; font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 800; margin-bottom: 10px; }
.section-sub { text-align: center; color: var(--gray); max-width: 560px; margin: 0 auto 48px; font-size: 0.95rem; }
.alt-bg { background: #060d18; }

/* FEATURE CARDS */
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px; }
.feat-card { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 26px; }
.feat-icon { width: 44px; height: 44px; border-radius: 10px; background: rgba(59,130,246,0.15); display: flex; align-items: center; justify-content: center; margin-bottom: 14px; }
.feat-icon svg { width: 22px; height: 22px; stroke: #93c5fd; stroke-width: 2; fill: none; }
.feat-card h3 { font-size: 0.95rem; font-weight: 700; margin-bottom: 6px; }
.feat-card p { font-size: 0.85rem; color: var(--gray); line-height: 1.65; }

/* PRICE TABLE */
.price-table { width: 100%; border-collapse: collapse; border-radius: 12px; overflow: hidden; }
.price-table thead th { background: var(--primary); color: #fff; padding: 14px 18px; text-align: left; font-size: 0.82rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; }
.price-table tbody tr { border-bottom: 1px solid var(--border); }
.price-table tbody tr:last-child { border-bottom: none; }
.price-table tbody tr:hover { background: #0f1e32; }
.price-table tbody td { padding: 14px 18px; font-size: 0.88rem; color: var(--dark); }
.price-table tbody td:nth-child(2) { color: var(--accent); font-weight: 700; }

/* FAQ */
.faq-list { max-width: 720px; margin: 0 auto; }
.faq-item { border: 1px solid var(--border); border-radius: 12px; margin-bottom: 10px; overflow: hidden; }
.faq-q { width: 100%; text-align: left; padding: 18px 20px; background: var(--card); border: none; cursor: pointer; font-size: 0.95rem; font-weight: 600; color: var(--dark); display: flex; justify-content: space-between; align-items: center; transition: background 0.2s; font-family: inherit; }
.faq-q:hover, .faq-q[aria-expanded="true"] { background: #0f1e32; }
.faq-icon { display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0; }
.faq-icon svg { width: 18px; height: 18px; stroke: var(--primary); stroke-width: 2.5; transition: transform 0.25s; }
.faq-q[aria-expanded="true"] .faq-icon svg { transform: rotate(45deg); }
.faq-a { display: none; padding: 0 20px 18px; font-size: 0.9rem; color: var(--gray); line-height: 1.7; background: var(--card); }
.faq-a.open { display: block; }

/* CTA */
.cta-section { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: var(--white); text-align: center; padding: 80px 24px; }
.cta-section h2 { font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 900; margin-bottom: 12px; }
.cta-section p { color: #bfdbfe; margin-bottom: 32px; font-size: 1rem; }
.btn-cta { background: #fbbf24; color: #111; padding: 15px 32px; border-radius: 10px; font-weight: 800; font-size: 1rem; display: inline-block; transition: transform 0.15s; }
.btn-cta:hover { transform: translateY(-2px); }

/* FOOTER */
footer { background: #050c1e; border-top: 1px solid var(--border); padding: 32px 24px; text-align: center; font-size: 0.82rem; color: var(--gray); }
footer a { color: var(--gray); margin: 0 10px; }
footer a:hover { color: var(--primary); }
.footer-logo { font-size: 1.1rem; font-weight: 800; color: var(--primary); margin-bottom: 12px; }
.footer-logo span { color: var(--accent); }

/* ── PROSE (blog posts, policy pages) ── */
.prose { max-width: 740px; margin: 0 auto; color: #cbd5e1; font-size: 1rem; line-height: 1.8; }
.prose h2 { color: #fff; font-size: 1.4rem; font-weight: 800; margin: 36px 0 14px; letter-spacing: -0.01em; }
.prose h3 { color: #fff; font-size: 1.1rem; font-weight: 700; margin: 28px 0 10px; }
.prose p { margin-bottom: 18px; }
.prose ul, .prose ol { margin: 0 0 18px 22px; }
.prose li { margin-bottom: 8px; }
.prose strong { color: #fff; }
.prose a { color: var(--primary); font-weight: 600; }
.prose a:hover { text-decoration: underline; }
.prose blockquote { border-left: 3px solid var(--primary); padding: 4px 0 4px 18px; margin: 0 0 18px; color: #94a3b8; font-style: italic; }

/* ── BLOG GRID ── */
.blog-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 24px; }
.blog-card { background: var(--card); border: 1px solid var(--border); border-radius: 14px; overflow: hidden; transition: transform 0.18s, border-color 0.18s; display: flex; flex-direction: column; }
.blog-card:hover { transform: translateY(-3px); border-color: #1f3a5f; }
.blog-card-top { height: 120px; background: linear-gradient(135deg, #0d2748, #091525); display: flex; align-items: center; justify-content: center; }
.blog-card-top svg { width: 40px; height: 40px; stroke: #3b82f6; stroke-width: 1.5; fill: none; }
.blog-card-body { padding: 22px; flex: 1; display: flex; flex-direction: column; }
.blog-cat { font-size: 0.72rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--primary); margin-bottom: 8px; }
.blog-card h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; line-height: 1.35; }
.blog-card p { font-size: 0.85rem; color: var(--gray); flex: 1; }
.blog-card .read-more { color: var(--primary); font-weight: 600; font-size: 0.84rem; margin-top: 14px; }
.post-meta { text-align: center; color: var(--gray); font-size: 0.84rem; margin-bottom: 8px; }

/* ── SAMPLE CARDS ── */
.sample-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 22px; }
.sample-card { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 24px; }
.sample-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }
.sample-tag { font-size: 0.7rem; font-weight: 700; padding: 4px 10px; border-radius: 999px; background: rgba(59,130,246,0.14); color: #93c5fd; border: 1px solid rgba(59,130,246,0.25); }
.sample-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; line-height: 1.4; }
.sample-card p { font-size: 0.85rem; color: var(--gray); margin-bottom: 16px; }
.sample-stats { display: flex; gap: 18px; font-size: 0.78rem; color: #94a3b8; border-top: 1px solid var(--border); padding-top: 14px; }
.sample-stats b { color: #fff; display: block; font-size: 0.95rem; }

/* ── CALLOUT BOX ── */
.callout { background: var(--card); border: 1px solid var(--border); border-left: 4px solid var(--primary); border-radius: 12px; padding: 22px 24px; margin: 0 auto 24px; max-width: 740px; }
.callout h3 { color: #fff; font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.callout p { color: var(--gray); font-size: 0.9rem; }