/* ===== DIJAST - Main CSS ===== */
:root {
  --bg-primary: #0A0F1E;
  --bg-secondary: #0D1428;
  --bg-card: rgba(255,255,255,0.05);
  --bg-card-hover: rgba(255,255,255,0.08);
  --gradient: linear-gradient(135deg, #00D4FF, #7C3AED);
  --gradient-bg: linear-gradient(135deg, rgba(0,212,255,0.1), rgba(124,58,237,0.1));
  --cyan: #00D4FF;
  --violet: #7C3AED;
  --green: #10B981;
  --text-primary: #FFFFFF;
  --text-secondary: rgba(255,255,255,0.7);
  --text-muted: rgba(255,255,255,0.4);
  --border: rgba(255,255,255,0.1);
  --border-hover: rgba(0,212,255,0.3);
  --shadow: 0 20px 60px rgba(0,0,0,0.3);
  --shadow-glow: 0 0 30px rgba(0,212,255,0.2);
  --radius: 16px;
  --radius-sm: 8px;
  --radius-lg: 24px;
  --transition: all 0.3s ease;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* Light mode */
[data-theme="light"] {
  --bg-primary: #F8FAFC;
  --bg-secondary: #FFFFFF;
  --bg-card: rgba(0,0,0,0.03);
  --bg-card-hover: rgba(0,0,0,0.06);
  --text-primary: #0F172A;
  --text-secondary: rgba(15,23,42,0.7);
  --text-muted: rgba(15,23,42,0.4);
  --border: rgba(0,0,0,0.1);
  --border-hover: rgba(0,212,255,0.4);
  --shadow: 0 20px 60px rgba(0,0,0,0.1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; }
button { cursor: pointer; font-family: var(--font); }

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--gradient); border-radius: 3px; }

/* ===== NAVBAR ===== */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  padding: 0 24px;
  height: 64px;
  display: flex; align-items: center;
  background: rgba(10,15,30,0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

[data-theme="light"] .navbar {
  background: rgba(248,250,252,0.9);
}

.navbar-inner {
  max-width: 1280px; margin: 0 auto;
  width: 100%;
  display: flex; align-items: center; justify-content: space-between;
}

.nav-logo {
  display: flex; align-items: center; gap: 10px;
  font-size: 22px; font-weight: 800;
  background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}

.nav-logo svg { width: 36px; height: 36px; flex-shrink: 0; }

.nav-links {
  display: flex; align-items: center; gap: 32px;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 14px; font-weight: 500;
  transition: var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute; bottom: -4px; left: 0; right: 0; height: 2px;
  background: var(--gradient); border-radius: 1px;
  transform: scaleX(0); transition: var(--transition);
}

.nav-links a:hover { color: var(--text-primary); }
.nav-links a:hover::after { transform: scaleX(1); }

.nav-actions { display: flex; align-items: center; gap: 12px; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 20px; border-radius: 50px;
  font-size: 14px; font-weight: 600;
  transition: var(--transition); border: none;
  cursor: pointer; white-space: nowrap;
}

.btn-ghost {
  background: transparent; color: var(--text-secondary);
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  color: var(--text-primary); border-color: var(--border-hover);
  background: var(--bg-card);
}

.btn-primary {
  background: var(--gradient); color: white;
  box-shadow: 0 4px 20px rgba(0,212,255,0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0,212,255,0.4);
}

.btn-outline {
  background: transparent; color: var(--cyan);
  border: 2px solid var(--cyan);
}

.btn-outline:hover {
  background: rgba(0,212,255,0.1);
  transform: translateY(-2px);
}

.btn-lg { padding: 14px 28px; font-size: 16px; }
.btn-xl { padding: 18px 36px; font-size: 18px; }

/* Theme Toggle */
.theme-toggle {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-primary);
  width: 40px; height: 40px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; cursor: pointer;
  transition: var(--transition);
}

.theme-toggle:hover { border-color: var(--border-hover); }

/* Hamburger */
.hamburger {
  display: none; flex-direction: column; gap: 5px;
  cursor: pointer; padding: 8px;
}

.hamburger span {
  display: block; width: 22px; height: 2px;
  background: var(--text-primary); border-radius: 1px;
  transition: var(--transition);
}

/* Mobile Nav */
.mobile-menu {
  display: none; position: fixed;
  top: 64px; left: 0; right: 0; bottom: 0;
  background: var(--bg-primary);
  padding: 24px; z-index: 999;
  flex-direction: column; gap: 8px;
  overflow-y: auto;
}

.mobile-menu.active { display: flex; }
.mobile-menu a { padding: 12px 16px; border-radius: var(--radius-sm); color: var(--text-secondary); font-weight: 500; }
.mobile-menu a:hover { background: var(--bg-card); color: var(--text-primary); }

/* ===== SECTIONS ===== */
.section { padding: 80px 24px; }
.section-sm { padding: 60px 24px; }

.container { max-width: 1280px; margin: 0 auto; }
.container-sm { max-width: 800px; margin: 0 auto; }
.container-lg { max-width: 1440px; margin: 0 auto; }

.section-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--gradient-bg);
  border: 1px solid rgba(0,212,255,0.2);
  color: var(--cyan); font-size: 13px; font-weight: 600;
  padding: 6px 16px; border-radius: 50px;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 800; line-height: 1.2; margin-bottom: 16px;
}

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

.section-subtitle {
  font-size: 18px; color: var(--text-secondary);
  max-width: 600px; line-height: 1.7;
}

.text-center { text-align: center; }
.text-center .section-subtitle { margin: 0 auto; }

/* ===== CARDS ===== */
.card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: var(--transition);
}

.card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

/* ===== GRID ===== */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

/* ===== FOOTER ===== */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 60px 24px 24px;
}

.footer-grid {
  max-width: 1280px; margin: 0 auto;
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px; margin-bottom: 48px;
}

.footer-brand p {
  color: var(--text-secondary); font-size: 14px;
  margin-top: 12px; max-width: 280px; line-height: 1.6;
}

.footer-social {
  display: flex; gap: 12px; margin-top: 20px;
}

.footer-social a {
  width: 36px; height: 36px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-secondary); font-size: 14px;
  transition: var(--transition);
}

.footer-social a:hover {
  border-color: var(--border-hover); color: var(--cyan);
}

.footer-col h4 {
  font-size: 14px; font-weight: 600;
  color: var(--text-primary); margin-bottom: 16px;
}

.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a { color: var(--text-muted); font-size: 14px; transition: var(--transition); }
.footer-col ul li a:hover { color: var(--cyan); }

.footer-bottom {
  max-width: 1280px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 24px; border-top: 1px solid var(--border);
  font-size: 13px; color: var(--text-muted);
}

/* ===== CANVAS ===== */
#particles-canvas {
  position: absolute; top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none; z-index: 0;
}

/* ===== SCROLL REVEAL ===== */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ===== FORM ELEMENTS ===== */
.form-group { margin-bottom: 20px; }
.form-label { display: block; font-size: 14px; font-weight: 500; margin-bottom: 8px; color: var(--text-secondary); }

.form-control {
  width: 100%; padding: 12px 16px;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text-primary);
  font-size: 14px; font-family: var(--font);
  transition: var(--transition);
}

.form-control:focus {
  outline: none; border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(0,212,255,0.1);
}

.form-control::placeholder { color: var(--text-muted); }

/* ===== BADGES ===== */
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 12px; border-radius: 50px;
  font-size: 12px; font-weight: 600;
}

.badge-green { background: rgba(16,185,129,0.15); color: #10B981; border: 1px solid rgba(16,185,129,0.2); }
.badge-cyan { background: rgba(0,212,255,0.15); color: var(--cyan); border: 1px solid rgba(0,212,255,0.2); }
.badge-violet { background: rgba(124,58,237,0.15); color: var(--violet); border: 1px solid rgba(124,58,237,0.2); }
.badge-yellow { background: rgba(245,158,11,0.15); color: #F59E0B; border: 1px solid rgba(245,158,11,0.2); }
.badge-red { background: rgba(239,68,68,0.15); color: #EF4444; border: 1px solid rgba(239,68,68,0.2); }

.pulse { animation: pulse 2s infinite; }
@keyframes pulse { 0%,100%{opacity:1;} 50%{opacity:0.5;} }

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

.divider { height: 1px; background: var(--border); margin: 48px 0; }

.flex { display: flex; }
.flex-col { display: flex; flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.gap-24 { gap: 24px; }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-links, .nav-actions .btn:not(.btn-primary) { display: none; }
  .hamburger { display: flex; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
  .section { padding: 60px 16px; }
}