/* ===================================================
   ZONAUTARA — Keamanan Digital
   Main Stylesheet
   =================================================== */

:root {
  --bg-primary: #0a0f1e;
  --bg-secondary: #0d1526;
  --bg-card: #111827;
  --bg-card-hover: #1a2540;
  --accent-cyan: #00d4ff;
  --accent-green: #00ff88;
  --accent-orange: #ff6b35;
  --text-primary: #f0f4ff;
  --text-secondary: #8892a4;
  --text-muted: #4a5568;
  --border: #1e2d45;
  --border-accent: #00d4ff33;
  --nav-height: 70px;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
  --shadow-glow: 0 0 30px rgba(0,212,255,0.15);
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --transition: 0.2s ease;
}

/* === RESET & BASE === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent-cyan); text-decoration: none; transition: color var(--transition); }
a:hover { color: #fff; }
ul { list-style: none; }

/* === TYPOGRAPHY === */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
}
h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); }
h3 { font-size: clamp(1.1rem, 2vw, 1.4rem); }
p { color: var(--text-secondary); }

/* === LAYOUT === */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}
.section { padding: 5rem 0; }
.section-sm { padding: 3rem 0; }

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }

/* === NAV === */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-height);
  background: rgba(10,15,30,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  transition: background var(--transition);
}
.nav.scrolled { background: rgba(10,15,30,0.98); }

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.nav-logo img {
  height: 36px;
  width: auto;
}

.nav-badge {
  display: inline-block;
  background: var(--accent-cyan);
  color: var(--bg-primary);
  font-size: 0.6rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  padding: 2px 6px;
  border-radius: 4px;
  margin-left: 6px;
  vertical-align: middle;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}
.nav-links a:hover,
.nav-links a.active { color: var(--text-primary); background: var(--bg-card); }

.nav-right { display: flex; align-items: center; gap: 0.75rem; }

.lang-toggle {
  display: flex;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
}
.lang-toggle button {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.3rem 0.6rem;
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font-sans);
}
.lang-toggle button.active {
  background: var(--accent-cyan);
  color: var(--bg-primary);
}

.nav-mobile-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  padding: 0.5rem;
}

/* === HERO === */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: var(--nav-height);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% -10%, rgba(0,212,255,0.12) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 80% 80%, rgba(0,255,136,0.06) 0%, transparent 50%),
    var(--bg-primary);
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,212,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,255,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 820px;
  margin: 0 auto;
  padding: 4rem 1.5rem;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(0,212,255,0.1);
  border: 1px solid rgba(0,212,255,0.3);
  color: var(--accent-cyan);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.4rem 1rem;
  border-radius: 100px;
  margin-bottom: 1.5rem;
  letter-spacing: 0.04em;
}
.hero-badge .dot {
  width: 6px; height: 6px;
  background: var(--accent-green);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

.hero-title {
  margin-bottom: 1.25rem;
  background: linear-gradient(135deg, #fff 40%, var(--accent-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-title .highlight {
  color: var(--accent-cyan);
  -webkit-text-fill-color: var(--accent-cyan);
}

.hero-desc {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 2.5rem;
  line-height: 1.75;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: 2.5rem;
  justify-content: center;
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
}

.hero-stat .num {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--accent-cyan);
  font-variant-numeric: tabular-nums;
}
.hero-stat .label {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
}

/* === BUTTONS === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  font-family: var(--font-sans);
  text-decoration: none;
}

.btn-primary {
  background: var(--accent-cyan);
  color: var(--bg-primary);
}
.btn-primary:hover {
  background: #fff;
  color: var(--bg-primary);
  box-shadow: 0 0 24px rgba(0,212,255,0.4);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
}
.btn-outline:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  background: rgba(0,212,255,0.05);
}

.btn-sm { padding: 0.4rem 0.9rem; font-size: 0.8rem; }
.btn-lg { padding: 0.9rem 2rem; font-size: 1rem; }

/* === SECTION HEADER === */
.section-header { text-align: center; margin-bottom: 3rem; }
.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  margin-bottom: 0.75rem;
}
.section-title { margin-bottom: 0.75rem; }
.section-desc { color: var(--text-secondary); max-width: 560px; margin: 0 auto; }

/* === CARDS === */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.card:hover {
  border-color: var(--border-accent);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}
.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0,212,255,0.4), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}
.card:hover::before { opacity: 1; }

.card-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}
.card-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 3px 8px;
  border-radius: 4px;
  margin-bottom: 0.75rem;
}
.tag-cyan { background: rgba(0,212,255,0.15); color: var(--accent-cyan); }
.tag-green { background: rgba(0,255,136,0.15); color: var(--accent-green); }
.tag-orange { background: rgba(255,107,53,0.15); color: var(--accent-orange); }
.tag-purple { background: rgba(168,85,247,0.15); color: #a855f7; }
.tag-yellow { background: rgba(250,204,21,0.15); color: #facc15; }
.tag-red { background: rgba(239,68,68,0.15); color: #ef4444; }

.card-title { font-size: 1.05rem; margin-bottom: 0.5rem; }
.card-desc { font-size: 0.875rem; color: var(--text-secondary); line-height: 1.6; }
.card-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 1rem;
  font-size: 0.78rem;
  color: var(--text-muted);
}
.card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-cyan);
  margin-top: 1rem;
  transition: gap var(--transition);
}
.card-link:hover { gap: 0.7rem; color: #fff; }

/* === FEATURES === */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.feature-card { text-align: center; }
.feature-icon {
  width: 60px; height: 60px;
  background: rgba(0,212,255,0.1);
  border: 1px solid rgba(0,212,255,0.2);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin: 0 auto 1rem;
}

/* === TOOLS PAGE === */
.tools-controls {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
  align-items: center;
}

.search-box {
  flex: 1;
  min-width: 200px;
  position: relative;
}
.search-box input {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  padding: 0.65rem 1rem 0.65rem 2.5rem;
  outline: none;
  transition: border-color var(--transition);
}
.search-box input:focus { border-color: var(--accent-cyan); }
.search-box input::placeholder { color: var(--text-muted); }
.search-icon {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.9rem;
}

.filter-pills {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.pill {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.4rem 0.9rem;
  border-radius: 100px;
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font-sans);
}
.pill:hover, .pill.active {
  background: rgba(0,212,255,0.1);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}

.tool-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}
.tool-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.tool-header {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}
.tool-icon {
  width: 42px; height: 42px;
  background: var(--bg-secondary);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}
.tool-name { font-size: 0.95rem; font-weight: 700; margin-bottom: 0.15rem; }
.tool-platform { font-size: 0.72rem; color: var(--text-muted); }
.tool-desc { font-size: 0.82rem; color: var(--text-secondary); line-height: 1.55; flex: 1; }
.tool-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 1rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
}
.tool-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-cyan);
  transition: all var(--transition);
}
.tool-link:hover { color: #fff; gap: 0.55rem; }

.tools-count {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}
.tools-count span { color: var(--accent-cyan); font-weight: 700; }

#no-results {
  text-align: center;
  padding: 3rem;
  color: var(--text-muted);
  display: none;
}

/* === MODUL PAGE === */
.modul-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}
.modul-card { cursor: pointer; }
.modul-number {
  font-size: 0.7rem;
  font-weight: 800;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  margin-bottom: 0.5rem;
  font-family: var(--font-mono);
}
.modul-steps {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1rem;
  font-size: 0.78rem;
  color: var(--text-muted);
}
.step-dots {
  display: flex;
  gap: 3px;
}
.step-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--border);
}
.step-dot.done { background: var(--accent-green); }
.step-dot.active { background: var(--accent-cyan); }

.difficulty {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.72rem;
  font-weight: 600;
  margin-top: 0.5rem;
}
.diff-pemula { color: var(--accent-green); }
.diff-menengah { color: #facc15; }
.diff-lanjut { color: var(--accent-orange); }

/* === ARTIKEL PAGE === */
.artikel-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 2rem;
}
.artikel-list { display: flex; flex-direction: column; gap: 1.25rem; }
.artikel-card-h {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1rem;
  transition: all var(--transition);
}
.artikel-card-h:hover {
  border-color: var(--border-accent);
  background: var(--bg-card-hover);
}
.artikel-date { font-size: 0.75rem; color: var(--text-muted); font-family: var(--font-mono); }
.artikel-title { font-size: 1rem; font-weight: 700; margin: 0.4rem 0; }
.artikel-excerpt { font-size: 0.85rem; color: var(--text-secondary); }

.sidebar { display: flex; flex-direction: column; gap: 1.25rem; }
.sidebar-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
}
.sidebar-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
}

/* === PAGE HEADER === */
.page-header {
  padding: calc(var(--nav-height) + 3rem) 0 3rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 80% at 50% 0%, rgba(0,212,255,0.08) 0%, transparent 60%);
}
.page-header-content { position: relative; z-index: 1; }

/* === BREADCRUMB === */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  justify-content: center;
  margin-top: 1rem;
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--accent-cyan); }
.breadcrumb span { color: var(--text-secondary); }

/* === FOOTER === */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 3rem 0 1.5rem;
  margin-top: auto;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2.5rem;
}
.footer-brand img { height: 32px; width: auto; margin-bottom: 0.75rem; }
.footer-desc { font-size: 0.85rem; color: var(--text-muted); line-height: 1.7; }
.footer-heading {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-primary);
  margin-bottom: 1rem;
}
.footer-links { display: flex; flex-direction: column; gap: 0.5rem; }
.footer-links a { font-size: 0.85rem; color: var(--text-muted); transition: color var(--transition); }
.footer-links a:hover { color: var(--accent-cyan); }

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 0.75rem;
}
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--accent-cyan); }

/* === UTILITY === */
.text-cyan { color: var(--accent-cyan); }
.text-green { color: var(--accent-green); }
.text-muted { color: var(--text-muted); }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-2 { margin-bottom: 1rem; }
.hidden { display: none !important; }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-1 { gap: 0.5rem; }

/* === ANIMATIONS === */
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
.fade-in { animation: fadeInUp 0.5s ease both; }
.fade-in-1 { animation-delay: 0.1s; }
.fade-in-2 { animation-delay: 0.2s; }
.fade-in-3 { animation-delay: 0.3s; }

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

/* === MOBILE NAV === */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0; right: 0;
  background: rgba(10,15,30,0.98);
  border-bottom: 1px solid var(--border);
  padding: 1rem 1.5rem 1.5rem;
  z-index: 999;
  flex-direction: column;
  gap: 0.25rem;
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 0.65rem 0.75rem;
  border-radius: var(--radius-sm);
  display: block;
}
.mobile-nav a:hover { color: var(--text-primary); background: var(--bg-card); }

/* === 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 { display: none; }
  .nav-mobile-btn { display: flex; }
  .features-grid,
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .artikel-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 1.5rem; }
  .footer-grid { grid-template-columns: 1fr; }
  .tools-controls { flex-direction: column; }
  .search-box { min-width: 100%; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .grid-4 { grid-template-columns: 1fr; }
  .hero-cta { flex-direction: column; align-items: center; }
}