/* MicroHub - Main CSS */
:root {
  --primary: #6366F1;
  --primary-light: #818CF8;
  --primary-dark: #4F46E5;
  --accent: #EEF2FF;
  --dark: #0D1117;
  --dark-2: #1a2332;
  --text: #374151;
  --text-light: #6B7280;
  --white: #FFFFFF;
  --border: #E5E7EB;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.14);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

html { scroll-behavior: smooth; font-size: 16px; }

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

::selection { background: var(--primary-light); color: var(--white); }

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--dark);
}

h1 { font-size: clamp(2.2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.5rem); }
h4 { font-size: 1.2rem; }

p { color: var(--text); font-size: 1.05rem; }

.text-primary { color: var(--primary) !important; }
.text-white { color: var(--white) !important; }
.text-muted { color: var(--text-light) !important; }
.text-dark { color: var(--dark) !important; }

.bg-primary { background: var(--primary) !important; }
.bg-accent { background: var(--accent) !important; }
.bg-dark { background: var(--dark) !important; }

/* Buttons */
.btn-primary-custom {
  background: var(--primary);
  color: var(--white);
  border: 2px solid var(--primary);
  padding: 0.75rem 2rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition);
  cursor: pointer;
  letter-spacing: 0.01em;
}
.btn-primary-custom:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-outline-custom {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
  padding: 0.75rem 2rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition);
  cursor: pointer;
}
.btn-outline-custom:hover {
  background: var(--primary);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.btn-white-custom {
  background: var(--white);
  color: var(--primary);
  border: 2px solid var(--white);
  padding: 0.75rem 2rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition);
  cursor: pointer;
}
.btn-white-custom:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--primary-dark);
  transform: translateY(-2px);
}

/* Section utilities */
.section-pad { padding: 90px 0; }
.section-pad-sm { padding: 60px 0; }

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--accent);
  color: var(--primary);
  padding: 0.35rem 1rem;
  border-radius: 100px;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.section-title {
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  color: var(--dark);
  margin-bottom: 1rem;
}
.section-title span { color: var(--primary); }

.section-desc {
  color: var(--text-light);
  font-size: 1.05rem;
  max-width: 580px;
}

/* Cards */
.card-custom {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: var(--transition);
  height: 100%;
}
.card-custom:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.card-icon {
  width: 52px;
  height: 52px;
  background: var(--accent);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  transition: var(--transition);
}
.card-custom:hover .card-icon {
  background: var(--primary);
}
.card-custom:hover .card-icon svg,
.card-custom:hover .card-icon i {
  color: var(--white) !important;
}
.card-icon svg, .card-icon i {
  color: var(--primary);
  width: 24px;
  height: 24px;
  font-size: 22px;
  transition: var(--transition);
}

/* Divider */
.divider {
  width: 56px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  border-radius: 2px;
  margin: 1rem 0 1.5rem;
}
.divider.center { margin-left: auto; margin-right: auto; }

/* Gradient text */
.gradient-text {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Badge */
.badge-custom {
  background: var(--accent);
  color: var(--primary);
  padding: 0.3rem 0.85rem;
  border-radius: 100px;
  font-size: 0.78rem;
  font-weight: 600;
}

/* Page hero (inner pages) */
.page-hero {
  background: linear-gradient(135deg, #0D1117 0%, #0D1117 48%, #1a2332 100%);
  padding: 104px 0 58px !important;
  position: relative;
  overflow: hidden;
  isolation: isolate;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 18% 18%, rgba(99, 102, 241, 0.15) 0%, transparent 24%),
    radial-gradient(circle at 82% 24%, rgba(99, 102, 241, 0.13) 0%, transparent 28%),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.04) 0 1px, transparent 1px 96px),
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.03) 0 1px, transparent 1px 96px),
    linear-gradient(180deg, rgba(18, 26, 36, 0.08) 0%, rgba(18, 26, 36, 0.34) 100%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 96%);
  pointer-events: none;
}
.page-hero::after {
  content: '';
  position: absolute;
  right: 7%;
  bottom: -120px;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.12) 0%, transparent 70%);
  filter: blur(6px);
  pointer-events: none;
}
.page-hero h1 {
  font-size: clamp(1.95rem, 3vw, 2.95rem);
  line-height: 1.04;
  letter-spacing: -0.04em;
}

/* Breadcrumb */
.breadcrumb-custom {
  display: none !important;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
  font-size: 0.875rem;
  color: rgba(255,255,255,0.6);
}
.breadcrumb-custom a { color: var(--primary-light); }
.breadcrumb-custom span { color: rgba(255,255,255,0.4); }

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  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; }

/* Floating animation */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}
.float-anim { animation: float 4s ease-in-out infinite; }

@keyframes float-slow {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-8px) rotate(3deg); }
}
.float-slow { animation: float-slow 6s ease-in-out infinite; }

/* Pulse */
@keyframes pulse-ring {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(99,102,241,0.4); }
  70% { transform: scale(1); box-shadow: 0 0 0 12px rgba(99,102,241,0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(99,102,241,0); }
}
.pulse-anim { animation: pulse-ring 2.5s infinite; }

/* Shimmer */
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}
.shimmer-bg {
  background: linear-gradient(90deg, var(--accent) 25%, #E0E7FF 50%, var(--accent) 75%);
  background-size: 200% 100%;
  animation: shimmer 2s infinite;
}

/* Link arrow */
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--primary);
  font-weight: 600;
  font-size: 0.9rem;
  transition: var(--transition);
}
.link-arrow:hover { gap: 0.7rem; color: var(--primary-dark); }

/* Smooth scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--accent); }
::-webkit-scrollbar-thumb { background: var(--primary-light); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary); }

/* Back to top */
#back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 44px;
  height: 44px;
  background: var(--primary);
  color: var(--white);
  border: none;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
  z-index: 999;
  box-shadow: var(--shadow);
}
#back-to-top.show { opacity: 1; pointer-events: auto; }
#back-to-top:hover { transform: translateY(-3px); background: var(--primary-dark); }