/* ===== BDK Apps — Shared Stylesheet ===== */

/* ---------- Reset & Base ---------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #0a0a1a;
  --bg-card: #12122a;
  --bg-nav: #0e0e22;
  --text: #e0e7ff;
  --text-muted: #9ca3c0;
  --accent: #a855f7;
  --accent-hover: #c084fc;
  --border: #1e1e3a;
  --radius: 12px;
  --max-width: 860px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s;
}

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

h1, h2, h3, h4 {
  color: #fff;
  line-height: 1.3;
}

h1 { font-size: 2.2rem; margin-bottom: 0.6em; }
h2 { font-size: 1.6rem; margin-top: 2rem; margin-bottom: 0.5em; }
h3 { font-size: 1.25rem; margin-top: 1.5rem; margin-bottom: 0.4em; }
h4 { font-size: 1.1rem; margin-top: 1.2rem; margin-bottom: 0.3em; }

p, li {
  margin-bottom: 0.7em;
}

ul, ol {
  padding-left: 1.5em;
}

strong {
  color: #fff;
}

/* ---------- Navigation ---------- */
nav {
  background: var(--bg-nav);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

nav .nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 1.5rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

nav .brand {
  font-weight: 700;
  font-size: 1.15rem;
  color: #fff;
  letter-spacing: 0.02em;
}

nav .brand span {
  color: var(--accent);
}

nav .links {
  display: flex;
  gap: 1.4rem;
  flex-wrap: wrap;
}

nav .links a {
  color: var(--text-muted);
  font-size: 0.92rem;
  font-weight: 500;
  transition: color 0.2s;
}

nav .links a:hover,
nav .links a.active {
  color: var(--accent);
}

/* ---------- Main Content ---------- */
main {
  flex: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2.5rem 1.5rem 3rem;
  width: 100%;
}

/* ---------- Hero (index) ---------- */
.hero {
  text-align: center;
  padding: 3rem 0 2rem;
}

.hero h1 {
  font-size: 2.6rem;
  margin-bottom: 0.3em;
}

.hero .subtitle {
  color: var(--text-muted);
  font-size: 1.15rem;
  max-width: 520px;
  margin: 0 auto 2.5rem;
}

/* ---------- App Cards ---------- */
.app-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin: 2rem 0 3rem;
}

.app-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem 1.6rem;
  transition: border-color 0.25s, transform 0.25s;
}

.app-card:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
}

.app-card .app-icon {
  font-size: 2.4rem;
  margin-bottom: 0.6rem;
}

.app-card h2 {
  margin-top: 0;
  font-size: 1.4rem;
}

.app-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.app-card .tag {
  display: inline-block;
  background: rgba(168, 85, 247, 0.15);
  color: var(--accent);
  font-size: 0.78rem;
  padding: 0.2em 0.65em;
  border-radius: 6px;
  margin-right: 0.4em;
  margin-top: 0.6em;
}

/* ---------- Quick Links ---------- */
.quick-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin: 1rem 0 2rem;
}

.quick-links a {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  font-size: 0.95rem;
  transition: border-color 0.2s, background 0.2s;
}

.quick-links a:hover {
  border-color: var(--accent);
  background: rgba(168, 85, 247, 0.08);
}

/* ---------- Legal / Long-form Content ---------- */
.legal-header {
  border-bottom: 1px solid var(--border);
  padding-bottom: 1rem;
  margin-bottom: 2rem;
}

.legal-header .updated {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.legal-content section {
  margin-bottom: 2rem;
}

.legal-content ul {
  margin-top: 0.4em;
}

/* ---------- FAQ ---------- */
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem 1.6rem;
  margin-bottom: 1rem;
}

.faq-item h3 {
  margin-top: 0;
  font-size: 1.05rem;
}

.faq-item p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 0;
}

/* ---------- Steps (delete-data) ---------- */
.steps {
  counter-reset: step;
}

.steps .step {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.2rem 1.5rem 1.2rem 3.5rem;
  margin-bottom: 0.8rem;
  position: relative;
}

.steps .step::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 1.2rem;
  top: 1.2rem;
  width: 1.6rem;
  height: 1.6rem;
  background: var(--accent);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
}

/* ---------- Contact Box ---------- */
.contact-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  text-align: center;
  margin: 2rem 0;
}

.contact-box .email {
  font-size: 1.2rem;
  font-weight: 700;
}

/* ---------- Footer ---------- */
footer {
  border-top: 1px solid var(--border);
  text-align: center;
  padding: 1.5rem;
  color: var(--text-muted);
  font-size: 0.85rem;
}

footer a {
  color: var(--text-muted);
}

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

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
  .hero h1 { font-size: 1.9rem; }
  h1 { font-size: 1.7rem; }
  h2 { font-size: 1.3rem; }

  .app-cards {
    grid-template-columns: 1fr;
  }

  nav .nav-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.6rem;
  }

  nav .links {
    gap: 1rem;
  }

  main {
    padding: 1.5rem 1rem 2rem;
  }
}