/* ===== FONTS ===== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

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

:root {
  --bg-primary:    #06090f;
  --bg-secondary:  #0b1120;
  --bg-card:       #0f1a2e;
  --bg-card-hover: #142135;
  --accent:        #22d3ee;
  --accent-dim:    #0891b2;
  --accent-glow:   rgba(34, 211, 238, 0.07);
  --accent-2:      #818cf8;
  --danger:        #f87171;
  --warning:       #fb923c;
  --success:       #34d399;
  --text-primary:  #f0f6ff;
  --text-secondary:#64748b;
  --border:        #1a2d4a;
  --font-mono:     'JetBrains Mono', 'Courier New', monospace;
  --font-sans:     'Inter', 'Segoe UI', system-ui, sans-serif;
  --radius:        8px;
  --transition:    0.18s ease;
}

html { scroll-behavior: smooth; }

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.65;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent-dim); }

/* ===== NAVBAR ===== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2.5rem;
  height: 60px;
  background: rgba(6, 9, 15, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.navbar-brand {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: 0.02em;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

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

.navbar-nav {
  display: flex;
  gap: 0.1rem;
  list-style: none;
}

.navbar-nav a {
  display: block;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius);
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  transition: all var(--transition);
}

.navbar-nav a:hover {
  color: var(--text-primary);
  background: rgba(255,255,255,0.04);
}

.navbar-nav a.active {
  color: var(--accent);
  background: rgba(34,211,238,0.06);
}

/* ===== HAMBURGER ===== */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}

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

/* ===== PAGE WRAPPER ===== */
.page-wrapper { padding-top: 60px; }

/* ===== HERO ===== */
.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: calc(100vh - 60px);
  padding: 4rem 2rem;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 55% at 50% 0%, rgba(34,211,238,0.07) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 85% 85%, rgba(129,140,248,0.05) 0%, transparent 55%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(34,211,238,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(34,211,238,0.025) 1px, transparent 1px);
  background-size: 64px 64px;
  pointer-events: none;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 20%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 20%, transparent 80%);
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--accent);
  background: rgba(34,211,238,0.05);
  border: 1px solid rgba(34,211,238,0.18);
  padding: 0.3rem 0.9rem;
  border-radius: 100px;
  margin-bottom: 2rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  position: relative; z-index: 1;
  font-family: var(--font-mono);
}

.hero h1 {
  font-size: clamp(2.2rem, 7vw, 4.5rem);
  font-weight: 800;
  line-height: 1.05;
  margin-bottom: 1.25rem;
  letter-spacing: -0.025em;
  position: relative; z-index: 1;
}

.hero h1 .highlight {
  background: linear-gradient(125deg, var(--accent) 0%, var(--accent-2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  max-width: 560px;
  color: var(--text-secondary);
  font-size: 1.05rem;
  margin-bottom: 2.5rem;
  line-height: 1.75;
  position: relative; z-index: 1;
}

.btn-group {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  justify-content: center;
  position: relative; z-index: 1;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.6rem 1.35rem;
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  font-family: inherit;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: #06090f;
}

.btn-primary:hover {
  background: #38e0f6;
  color: #06090f;
  transform: translateY(-1px);
}

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

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-glow);
}

/* ===== SECTION BASE ===== */
.section {
  padding: 5rem 2rem;
  max-width: 1100px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-label {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 0.6rem;
  font-family: var(--font-mono);
}

.section-header h2 {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.section-header p {
  color: var(--text-secondary);
  max-width: 520px;
  margin: 0.75rem auto 0;
  font-size: 0.95rem;
}

.divider {
  width: 28px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  margin: 1rem auto 0;
  border-radius: 2px;
  opacity: 0.5;
}

/* ===== CARDS ===== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.75rem;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.card::after {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  opacity: 0;
  transition: opacity var(--transition);
}

.card:hover {
  border-color: rgba(34,211,238,0.2);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.5);
}

.card:hover::after { opacity: 1; }

.card-icon { font-size: 1.75rem; margin-bottom: 1rem; }

.card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.card p {
  color: var(--text-secondary);
  font-size: 0.875rem;
  line-height: 1.65;
}

/* ===== GRID LAYOUTS ===== */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 1.25rem;
}

/* ===== PAGE HERO ===== */
.page-hero {
  background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
  border-bottom: 1px solid var(--border);
  padding: 4.5rem 2rem 3rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 80% at 50% 0%, rgba(34,211,238,0.05) 0%, transparent 60%);
  pointer-events: none;
}

.page-hero h1 {
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  font-weight: 800;
  margin-bottom: 0.75rem;
  letter-spacing: -0.025em;
  position: relative;
}

.page-hero p {
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto;
  font-size: 0.975rem;
  position: relative;
}

/* ===== BREADCRUMB ===== */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.775rem;
  color: var(--text-secondary);
  justify-content: center;
  margin-bottom: 1.25rem;
  position: relative;
  font-family: var(--font-mono);
}

.breadcrumb a { color: var(--text-secondary); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { color: var(--border); }
.breadcrumb .current { color: var(--accent); }

/* ===== BADGE / TAG ===== */
.badge {
  display: inline-block;
  padding: 0.18rem 0.55rem;
  border-radius: 4px;
  font-size: 0.68rem;
  font-weight: 700;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-critical { background: rgba(248,113,113,0.1);  color: #f87171; border: 1px solid rgba(248,113,113,0.2); }
.badge-high     { background: rgba(251,146,60,0.1);   color: #fb923c; border: 1px solid rgba(251,146,60,0.2); }
.badge-medium   { background: rgba(251,191,36,0.1);   color: #fbbf24; border: 1px solid rgba(251,191,36,0.2); }
.badge-low      { background: rgba(52,211,153,0.1);   color: #34d399; border: 1px solid rgba(52,211,153,0.2); }
.badge-info     { background: rgba(26,45,74,0.6);     color: var(--text-secondary); border: 1px solid var(--border); }

/* ===== SKILLS / PROGRESS ===== */
.skill-list { display: flex; flex-direction: column; gap: 0.85rem; }

.skill-header {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  margin-bottom: 0.35rem;
  color: var(--text-primary);
  font-weight: 500;
}

.skill-bar {
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
}

.skill-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-dim), var(--accent));
  border-radius: 2px;
  transition: width 1.2s ease;
}

/* ===== TIMELINE ===== */
.timeline { position: relative; padding-left: 1.5rem; }

.timeline::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 1px;
  background: var(--border);
}

.timeline-item {
  position: relative;
  margin-bottom: 2.25rem;
  padding-left: 1.5rem;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -1.55rem; top: 0.4rem;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px rgba(34,211,238,0.1);
}

.timeline-date {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent);
  margin-bottom: 0.3rem;
  letter-spacing: 0.04em;
}

.timeline-title {
  font-size: 0.975rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.2rem;
}

.timeline-sub {
  font-size: 0.825rem;
  color: var(--text-secondary);
  margin-bottom: 0.35rem;
}

.timeline-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ===== CVE TABLE ===== */
.cve-table-wrap {
  overflow-x: auto;
  border-radius: 12px;
  border: 1px solid var(--border);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

thead th {
  padding: 0.75rem 1rem;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-secondary);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--border);
  background: var(--bg-secondary);
}

tbody tr {
  border-bottom: 1px solid rgba(26,45,74,0.5);
  transition: background var(--transition);
}

tbody tr:last-child { border-bottom: none; }
tbody tr:hover { background: var(--bg-card); }

tbody td {
  padding: 0.85rem 1rem;
  color: var(--text-secondary);
  vertical-align: middle;
}

tbody td:first-child {
  font-family: var(--font-mono);
  color: var(--accent);
  font-weight: 600;
  font-size: 0.82rem;
}

/* ===== CVE CARD ===== */
.cve-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  transition: all var(--transition);
}

.cve-card:hover {
  border-color: rgba(34,211,238,0.22);
  background: var(--bg-card-hover);
  box-shadow: 0 8px 32px rgba(0,0,0,0.45);
  transform: translateY(-1px);
}

.cve-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 0.75rem;
}

.cve-id {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.02em;
}

.cve-title {
  font-size: 0.925rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.4rem;
}

.cve-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
  line-height: 1.65;
}

.cve-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-family: var(--font-mono);
}

/* ===== CONTACT ===== */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.75rem;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  transition: all var(--transition);
}

.contact-item:hover {
  border-color: rgba(34,211,238,0.2);
  background: var(--bg-card-hover);
}

.contact-icon { font-size: 1.2rem; }

.contact-label {
  font-size: 0.7rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  font-family: var(--font-mono);
  margin-bottom: 0.1rem;
}

.contact-value {
  font-size: 0.875rem;
  color: var(--text-primary);
  font-weight: 500;
}

/* ===== FOOTER ===== */
footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem 2.5rem;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.78rem;
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

footer span { color: var(--accent); }

/* ===== TERMINAL BLOCK ===== */
.terminal {
  background: #040710;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: 0.82rem;
}

.terminal-bar {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.6rem 1rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}

.terminal-dot { width: 11px; height: 11px; border-radius: 50%; }
.td-red    { background: #ef4444; }
.td-yellow { background: #f59e0b; }
.td-green  { background: #22c55e; }

.terminal-title {
  margin-left: auto;
  font-size: 0.7rem;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
}

.terminal-body {
  padding: 1.25rem 1.5rem;
  line-height: 1.9;
}

.t-prompt { color: var(--accent); }
.t-cmd    { color: var(--text-primary); }
.t-out    { color: var(--text-secondary); }
.t-ok     { color: var(--success); }
.t-err    { color: var(--danger); }

/* ===== STATS ===== */
.stats-row {
  display: flex;
  flex-wrap: wrap;
  gap: 2.5rem;
  justify-content: center;
  padding: 3rem 2rem;
}

.stat-box { text-align: center; min-width: 110px; }

.stat-number {
  font-size: 2.8rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-family: var(--font-mono);
  line-height: 1;
}

.stat-label {
  font-size: 0.73rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: 0.4rem;
  font-family: var(--font-mono);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .navbar { padding: 0 1.25rem; }

  .navbar-nav {
    display: none;
    position: absolute;
    top: 60px; left: 0; right: 0;
    flex-direction: column;
    background: rgba(6,9,15,0.98);
    border-bottom: 1px solid var(--border);
    padding: 0.75rem;
    gap: 0.1rem;
  }

  .navbar-nav.open { display: flex; }
  .hamburger { display: flex; }
  .section { padding: 3rem 1.25rem; }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .stats-row { gap: 1.5rem; }

  .hero h1 { letter-spacing: -0.015em; }
}