/* ============================================================
   Vibe Code Studios — design system (dark vibe-coder)
   ============================================================ */

:root {
  --bg: #08080d;
  --bg-2: #0c0c14;
  --surface: #13131f;
  --surface-2: #1a1a29;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);

  --text: #ececf4;
  --muted: #9b9bb4;
  --muted-2: #6f6f88;

  --accent: #8b5cff;   /* purple */
  --accent-2: #22d3ee; /* cyan   */
  --accent-3: #ff5cf0; /* magenta */

  --grad: linear-gradient(120deg, #8b5cff 0%, #5b8bff 45%, #22d3ee 100%);
  --grad-soft: linear-gradient(120deg, rgba(139,92,255,0.18), rgba(34,211,238,0.18));

  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;

  --shadow: 0 20px 60px -20px rgba(0, 0, 0, 0.7);
  --glow: 0 0 0 1px rgba(139, 92, 255, 0.35), 0 12px 50px -10px rgba(139, 92, 255, 0.45);

  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --maxw: 1140px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* Ambient grid + glow backdrop */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(900px 500px at 12% -8%, rgba(139, 92, 255, 0.18), transparent 60%),
    radial-gradient(800px 500px at 92% 4%, rgba(34, 211, 238, 0.14), transparent 60%),
    var(--bg);
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(circle at 50% 0%, black, transparent 75%);
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

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

/* ---------- Typography ---------- */
h1, h2, h3, h4 { line-height: 1.12; margin: 0 0 0.5em; font-weight: 700; letter-spacing: -0.02em; }
h1 { font-size: clamp(2.4rem, 6vw, 4.1rem); }
h2 { font-size: clamp(1.8rem, 3.6vw, 2.6rem); }
h3 { font-size: 1.25rem; }
p { margin: 0 0 1rem; color: var(--muted); }

.gradient-text {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.mono { font-family: var(--font-mono); }
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin: 0 0 14px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 13px 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.98rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: var(--grad);
  color: #fff;
  box-shadow: 0 10px 30px -10px rgba(139, 92, 255, 0.7);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 40px -10px rgba(139, 92, 255, 0.85); }
.btn-ghost {
  background: rgba(255, 255, 255, 0.04);
  border-color: var(--border-strong);
  color: var(--text);
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.09); border-color: var(--accent); }
.btn-lg { padding: 16px 28px; font-size: 1.05rem; }
.btn-block { width: 100%; justify-content: center; }

/* ---------- Nav ---------- */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(8, 8, 13, 0.72);
  border-bottom: 1px solid var(--border);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: center; gap: 11px; font-weight: 700; letter-spacing: -0.01em; font-size: 1.06rem; }
.brand .logo {
  width: 30px; height: 30px; border-radius: 9px;
  background: var(--grad);
  display: grid; place-items: center;
  font-family: var(--font-mono); font-weight: 800; color: #fff; font-size: 1rem;
  box-shadow: 0 6px 18px -6px rgba(139, 92, 255, 0.8);
}
.brand .logo::after { content: "<>"; }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a { color: var(--muted); font-size: 0.95rem; font-weight: 500; transition: color 0.15s; }
.nav-links a:hover, .nav-links a.active { color: var(--text); }
.nav-cta { display: flex; align-items: center; gap: 14px; }
.nav-toggle { display: none; background: none; border: 0; color: var(--text); cursor: pointer; padding: 8px; }

/* ---------- Layout sections ---------- */
.section { padding: 88px 0; }
.section-sm { padding: 56px 0; }
.center { text-align: center; }
.lead { font-size: 1.15rem; color: var(--muted); max-width: 640px; }
.center .lead { margin-left: auto; margin-right: auto; }
.section-head { max-width: 680px; margin: 0 auto 52px; text-align: center; }

/* ---------- Hero ---------- */
.hero { padding: 84px 0 64px; position: relative; }
.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center; }
.badge-row { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 22px; }
.badge {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 0.76rem; letter-spacing: 0.04em;
  padding: 7px 13px; border-radius: 999px;
  background: rgba(255, 255, 255, 0.04); border: 1px solid var(--border);
  color: var(--muted);
}
.badge .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent-2); box-shadow: 0 0 10px var(--accent-2); }
.hero h1 { margin-bottom: 18px; }
.hero p.lead { margin-bottom: 30px; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.hero-trust { margin-top: 22px; font-size: 0.85rem; color: var(--muted-2); display: flex; align-items: center; gap: 8px; }

/* Code card in hero */
.code-card {
  background: linear-gradient(180deg, var(--surface), var(--bg-2));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.code-head { display: flex; align-items: center; gap: 8px; padding: 14px 18px; border-bottom: 1px solid var(--border); }
.code-head .dot { width: 12px; height: 12px; border-radius: 50%; }
.code-head .r { background: #ff5f57; } .code-head .y { background: #febc2e; } .code-head .g { background: #28c840; }
.code-head .file { margin-left: 10px; font-family: var(--font-mono); font-size: 0.82rem; color: var(--muted-2); }
.code-body { padding: 20px 22px; font-family: var(--font-mono); font-size: 0.86rem; line-height: 1.85; overflow-x: auto; }
.code-body .ln { color: var(--muted-2); user-select: none; margin-right: 16px; }
.c-key { color: var(--accent); } .c-str { color: #7ee787; } .c-fn { color: var(--accent-2); } .c-com { color: var(--muted-2); } .c-num { color: var(--accent-3); }

/* ---------- Cards / grids ---------- */
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 22px; }
.card {
  background: linear-gradient(180deg, var(--surface), var(--bg-2));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.2s ease;
  position: relative;
  overflow: hidden;
}
.card:hover { transform: translateY(-4px); border-color: var(--border-strong); box-shadow: var(--shadow); }
.card .icon {
  width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center;
  background: var(--grad-soft); border: 1px solid var(--border); margin-bottom: 18px; font-size: 1.4rem;
}
.card h3 { margin-bottom: 8px; }
.card p { margin: 0; font-size: 0.96rem; }

/* Feature list */
.feature-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.feature-list li { display: flex; gap: 12px; align-items: flex-start; color: var(--muted); }
.feature-list .tick {
  flex: 0 0 auto; width: 24px; height: 24px; border-radius: 7px; margin-top: 2px;
  background: var(--grad-soft); border: 1px solid var(--border);
  display: grid; place-items: center; color: var(--accent-2); font-size: 0.8rem; font-weight: 700;
}
.feature-list li b { color: var(--text); font-weight: 600; }

/* ---------- Download / resource cards ---------- */
.dl-card { display: flex; flex-direction: column; }
.dl-card .meta { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.chip {
  font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.06em; text-transform: uppercase;
  padding: 5px 10px; border-radius: 999px; border: 1px solid var(--border); color: var(--muted);
  background: rgba(255, 255, 255, 0.03);
}
.chip.free { color: #7ee787; border-color: rgba(126, 231, 135, 0.3); }
.chip.soon { color: var(--accent-3); border-color: rgba(255, 92, 240, 0.3); }
.dl-card .foot { margin-top: auto; padding-top: 18px; }

/* ---------- Lead-magnet / signup block ---------- */
.signup-card {
  background:
    radial-gradient(600px 200px at 10% -20%, rgba(139, 92, 255, 0.25), transparent 60%),
    linear-gradient(180deg, var(--surface), var(--bg-2));
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow);
}
.signup-form { display: flex; gap: 12px; margin-top: 22px; flex-wrap: wrap; }
.signup-form input[type="email"] {
  flex: 1 1 260px;
  padding: 15px 18px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: rgba(0, 0, 0, 0.35);
  color: var(--text);
  font-size: 1rem;
  font-family: var(--font-sans);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.signup-form input[type="email"]::placeholder { color: var(--muted-2); }
.signup-form input[type="email"]:focus { border-color: var(--accent); box-shadow: 0 0 0 4px rgba(139, 92, 255, 0.18); }
.hp { position: absolute; left: -9999px; opacity: 0; height: 0; width: 0; }
.form-note { font-size: 0.82rem; color: var(--muted-2); margin: 14px 0 0; }
.form-msg { margin: 14px 0 0; font-size: 0.95rem; min-height: 1.2em; }
.form-msg.ok { color: #7ee787; }
.form-msg.err { color: #ff8080; }

/* ---------- Stats ---------- */
.stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.stat { text-align: center; padding: 24px 14px; border: 1px solid var(--border); border-radius: var(--radius); background: rgba(255,255,255,0.02); }
.stat .num { font-size: 2rem; font-weight: 800; letter-spacing: -0.02em; }
.stat .lbl { font-size: 0.85rem; color: var(--muted-2); margin-top: 4px; }

/* ---------- Blog ---------- */
.post-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(330px, 1fr)); gap: 24px; }
.post-card { display: flex; flex-direction: column; }
.post-card .cat { font-family: var(--font-mono); font-size: 0.74rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent-2); margin-bottom: 10px; }
.post-card h3 { font-size: 1.22rem; margin-bottom: 10px; }
.post-card .excerpt { color: var(--muted); font-size: 0.96rem; margin-bottom: 16px; }
.post-card .post-meta { margin-top: auto; font-size: 0.82rem; color: var(--muted-2); display: flex; gap: 10px; align-items: center; }
.read-more { color: var(--accent-2); font-weight: 600; font-size: 0.92rem; }

/* Article */
.article { max-width: 760px; margin: 0 auto; }
.article-head { text-align: center; margin-bottom: 44px; }
.article-head .cat { font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent-2); }
.article-head h1 { margin: 14px 0 16px; }
.article-head .meta { color: var(--muted-2); font-size: 0.9rem; }
.prose { font-size: 1.06rem; color: #cfcfde; }
.prose h2 { margin-top: 2em; font-size: 1.6rem; }
.prose h3 { margin-top: 1.6em; font-size: 1.22rem; color: var(--text); }
.prose p { color: #c4c4d6; }
.prose a { color: var(--accent-2); border-bottom: 1px solid rgba(34, 211, 238, 0.3); }
.prose ul, .prose ol { color: #c4c4d6; padding-left: 1.3em; margin: 0 0 1.2em; }
.prose li { margin-bottom: 0.5em; }
.prose blockquote {
  margin: 1.6em 0; padding: 4px 22px; border-left: 3px solid var(--accent);
  background: rgba(139, 92, 255, 0.06); border-radius: 0 12px 12px 0; color: var(--text);
}
.prose code {
  font-family: var(--font-mono); font-size: 0.88em;
  background: rgba(255, 255, 255, 0.07); padding: 2px 7px; border-radius: 6px; color: var(--accent-2);
}
.prose pre {
  background: var(--bg-2); border: 1px solid var(--border); border-radius: 12px;
  padding: 18px 20px; overflow-x: auto; margin: 1.4em 0;
}
.prose pre code { background: none; padding: 0; color: #d7d7e6; }
.prose hr { border: 0; border-top: 1px solid var(--border); margin: 2.4em 0; }

/* ---------- Callout ---------- */
.callout {
  display: flex; gap: 16px; align-items: flex-start;
  background: var(--grad-soft); border: 1px solid var(--border-strong);
  border-radius: var(--radius); padding: 22px 24px; margin: 1.8em 0;
}
.callout .ic { font-size: 1.5rem; }
.callout p { margin: 0; color: var(--text); }

/* ---------- CTA band ---------- */
.cta-band {
  background:
    radial-gradient(700px 240px at 50% 0%, rgba(34, 211, 238, 0.2), transparent 65%),
    linear-gradient(180deg, var(--surface), var(--bg-2));
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 56px 40px;
  text-align: center;
  box-shadow: var(--shadow);
}

/* ---------- YouTube ---------- */
.yt-hero { display: grid; grid-template-columns: 1fr 1fr; gap: 44px; align-items: center; }
.video-frame {
  position: relative; aspect-ratio: 16 / 9; border-radius: var(--radius);
  background: linear-gradient(135deg, #1b1b29, #0c0c14);
  border: 1px solid var(--border); overflow: hidden; box-shadow: var(--shadow);
  display: grid; place-items: center;
}
.video-frame .play {
  width: 72px; height: 72px; border-radius: 50%; background: var(--grad); display: grid; place-items: center;
  box-shadow: 0 10px 40px -8px rgba(139, 92, 255, 0.8); color: #fff;
}
.video-frame .play svg { margin-left: 4px; }
.video-list { display: grid; gap: 14px; }
.video-item { display: flex; gap: 16px; align-items: center; padding: 14px; border: 1px solid var(--border); border-radius: var(--radius-sm); background: rgba(255,255,255,0.02); transition: border-color 0.15s, transform 0.15s; }
.video-item:hover { border-color: var(--accent); transform: translateX(4px); }
.video-item .thumb { flex: 0 0 96px; height: 56px; border-radius: 8px; background: var(--grad-soft); display: grid; place-items: center; color: var(--accent-2); }
.video-item .vt { font-weight: 600; font-size: 0.96rem; }
.video-item .vm { font-size: 0.8rem; color: var(--muted-2); }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--border); padding: 56px 0 40px; margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 32px; }
.footer-grid h4 { font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted-2); margin-bottom: 16px; }
.footer-grid a { display: block; color: var(--muted); font-size: 0.95rem; margin-bottom: 10px; transition: color 0.15s; }
.footer-grid a:hover { color: var(--text); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; margin-top: 44px; padding-top: 24px; border-top: 1px solid var(--border); color: var(--muted-2); font-size: 0.85rem; flex-wrap: wrap; gap: 12px; }
.footer-brand p { max-width: 320px; font-size: 0.95rem; }

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero-grid, .yt-hero { grid-template-columns: 1fr; }
  .hero .code-card { order: 0; }
  /* Inline 2-col sections (lead magnet, downloads join) collapse on mobile */
  .lm-grid { grid-template-columns: 1fr !important; gap: 28px !important; }
  .stat-row { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .nav-links, .nav-cta .btn-ghost { display: none; }
  .nav-toggle { display: block; }
  .site-nav.open .nav-links {
    display: flex; flex-direction: column; gap: 18px;
    position: absolute; top: 68px; left: 0; right: 0;
    background: rgba(8,8,13,0.97); border-bottom: 1px solid var(--border); padding: 22px 24px;
  }
}
@media (max-width: 600px) {
  .container { padding: 0 18px; }
  h1 { font-size: clamp(2rem, 8.5vw, 2.6rem); }
  h2 { font-size: clamp(1.5rem, 6vw, 2rem); }
  .section { padding: 52px 0; }
  .section-sm { padding: 40px 0; }
  .hero { padding: 44px 0 36px; }
  .lead { font-size: 1.05rem; }
  .signup-card, .cta-band { padding: 24px 18px; }
  .signup-form { flex-direction: column; align-items: stretch; gap: 10px; }
  .signup-form input[type="email"], .signup-form .btn { width: 100%; }
  .signup-form .btn { justify-content: center; }
  .hero-cta { width: 100%; }
  .hero-cta .btn { flex: 1 1 auto; justify-content: center; }
  .brand { font-size: 0.98rem; }
  .nav-cta .btn-primary { padding: 10px 14px; font-size: 0.9rem; }
  .btn-lg { padding: 14px 20px; font-size: 1rem; }
  .code-body { font-size: 0.74rem; padding: 16px; }
  .stat-row { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .section-head { margin-bottom: 36px; }
  .prose { font-size: 1rem; }
  .article-head h1 { font-size: clamp(1.8rem, 7vw, 2.3rem); }
}
@media (max-width: 380px) {
  .footer-grid { grid-template-columns: 1fr; }
  .stat-row { grid-template-columns: 1fr; }
  .badge { font-size: 0.7rem; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; transition: none; }
}