/* ================================================
   RICLOUD ACADEMY — Shared Styles
   Brand: Purple #c044f5 → Cyan #22d3ee
   ================================================ */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

:root {
  --purple: #c044f5;
  --cyan: #22d3ee;
  --purple-dark: #8b22d4;
  --cyan-dark: #0ea5c9;
  --bg: #07070f;
  --bg2: #0d0d1a;
  --bg3: #111128;
  --surface: rgba(255,255,255,0.04);
  --surface-hover: rgba(255,255,255,0.08);
  --border: rgba(255,255,255,0.08);
  --border-glow: rgba(192,68,245,0.3);
  --text: #f0f0ff;
  --text-muted: rgba(240,240,255,0.55);
  --text-dim: rgba(240,240,255,0.35);
  --gradient: linear-gradient(135deg, var(--purple), var(--cyan));
  --gradient-text: linear-gradient(90deg, #d164f8, #22d3ee);
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-glow: 0 0 40px rgba(192,68,245,0.15);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Plus Jakarta Sans', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ── Typography ── */
h1,h2,h3,h4,h5 { line-height: 1.2; font-weight: 800; letter-spacing: -0.02em; }
p { color: var(--text-muted); }
a { text-decoration: none; color: inherit; }

.gradient-text {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 28px; border-radius: 50px; font-size: 15px;
  font-weight: 700; font-family: inherit; cursor: pointer;
  border: none; transition: all 0.3s ease; letter-spacing: 0.01em;
}
.btn-primary {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 4px 24px rgba(192,68,245,0.4);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(192,68,245,0.6);
}
.btn-ghost {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  backdrop-filter: blur(12px);
}
.btn-ghost:hover {
  background: var(--surface-hover);
  border-color: rgba(192,68,245,0.4);
}

/* ── Navigation ── */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding: 0 48px;
  display: flex; align-items: center; justify-content: space-between;
  height: 72px;
  background: rgba(7,7,15,0.7);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: all 0.3s ease;
}
nav.scrolled {
  background: rgba(7,7,15,0.95);
  border-bottom-color: rgba(192,68,245,0.2);
}
.nav-logo img { height: 36px; }
.nav-links {
  display: flex; align-items: center; gap: 36px;
  list-style: none;
}
.nav-links a {
  font-size: 14px; font-weight: 600; color: var(--text-muted);
  transition: color 0.2s ease; letter-spacing: 0.02em;
  white-space: nowrap;
}
.nav-links a:hover, .nav-links a.active { color: var(--text); }
.nav-links a.active { color: var(--cyan); }
.nav-actions { display: flex; align-items: center; gap: 12px; }
.nav-actions .btn { padding: 10px 22px; font-size: 14px; }

.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; }
.hamburger span { display: block; width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: all 0.3s; }

/* ── Mobile Nav ── */
@media (max-width: 768px) {
  nav { padding: 0 20px; }
  .hamburger { display: flex; }
  .nav-links, .nav-actions { display: none; }
  .nav-links.open {
    display: flex; flex-direction: column; gap: 0;
    position: absolute; top: 72px; left: 0; right: 0;
    background: rgba(7,7,15,0.98); border-bottom: 1px solid var(--border);
    padding: 16px 0;
  }
  .nav-links.open a { display: block; padding: 14px 24px; font-size: 16px; }
}

/* ── Section commons ── */
section { padding: 100px 48px; }
.section-inner { max-width: 1200px; margin: 0 auto; }
.section-tag {
  display: inline-block; padding: 6px 16px; white-space: nowrap;
  background: rgba(192,68,245,0.12); border: 1px solid rgba(192,68,245,0.3);
  border-radius: 50px; font-size: 12px; font-weight: 700;
  color: var(--purple); letter-spacing: 0.1em; text-transform: uppercase;
  margin-bottom: 16px;
}
.section-title { font-size: clamp(32px, 4vw, 48px); margin-bottom: 16px; }
.section-sub { font-size: 17px; color: var(--text-muted); max-width: 560px; line-height: 1.7; }

/* ── Cards ── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: all 0.3s ease;
  position: relative; overflow: hidden;
}
.card::before {
  content: ''; position: absolute; inset: 0;
  background: var(--gradient);
  opacity: 0; transition: opacity 0.3s ease;
  border-radius: inherit;
}
.card:hover {
  border-color: rgba(192,68,245,0.4);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.4), 0 0 30px rgba(192,68,245,0.1);
}

/* ── Footer ── */
footer {
  background: var(--bg2);
  border-top: 1px solid var(--border);
  padding: 64px 48px 32px;
}
.footer-inner { max-width: 1200px; margin: 0 auto; }
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px; margin-bottom: 48px;
}
.footer-logo img { height: 32px; margin-bottom: 16px; }
.footer-desc { font-size: 14px; color: var(--text-muted); line-height: 1.8; max-width: 260px; }
.footer-col h4 { font-size: 13px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-dim); margin-bottom: 20px; }
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 12px; }
.footer-col ul li a { font-size: 14px; color: var(--text-muted); transition: color 0.2s; }
.footer-col ul li a:hover { color: var(--cyan); }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; padding-top: 32px; border-top: 1px solid var(--border); }
.footer-bottom p { font-size: 13px; color: var(--text-dim); }
.social-links { display: flex; gap: 12px; }
.social-link { width: 36px; height: 36px; border-radius: 10px; background: var(--surface); border: 1px solid var(--border); display: flex; align-items: center; justify-content: center; transition: all 0.2s; }
.social-link:hover { border-color: var(--purple); background: rgba(192,68,245,0.1); }
.social-link svg { width: 16px; height: 16px; fill: var(--text-muted); }

/* ── Scroll reveal ── */
.reveal {
  opacity: 0; transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }

@media (max-width: 768px) {
  section { padding: 64px 20px; }
  footer { padding: 48px 20px 24px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }
}