/* ============================================================
   styles.css — Shared stylesheet for all pages
   Cybersecurity Portfolio — Dark Premium Hacker Aesthetic
   ============================================================ */

/* ── Google Fonts ─────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800;900&family=Share+Tech+Mono&display=swap');

/* ── CSS Variables ────────────────────────────────────────── */
:root {
  --bg:          #020408;
  --bg-card:     #060d14;
  --bg-card-alt: #080f18;
  --cyan:        #00e5ff;
  --green:       #00ff88;
  --purple:      #b24dff;
  --red:         #ff3d5a;
  --text:        #c8d8e8;
  --text-dim:    #6a8090;
  --border:      rgba(0, 229, 255, 0.12);
  --border-dim:  rgba(0, 229, 255, 0.06);
  --font-body:   'Outfit', sans-serif;
  --font-mono:   'Share Tech Mono', monospace;
  --nav-h:       64px;
  --glow-cyan:   0 0 20px rgba(0, 229, 255, 0.35);
  --glow-green:  0 0 20px rgba(0, 255, 136, 0.35);
  --glow-purple: 0 0 20px rgba(178, 77, 255, 0.35);
}

/* ── Reset & Base ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

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

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

/* ── Background Canvas (injected by main.js) ──────────────── */
#bg-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

/* Scan-line beam */
.scanline {
  position: fixed;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg,
    transparent 0%,
    rgba(0, 229, 255, 0.08) 20%,
    rgba(0, 229, 255, 0.25) 50%,
    rgba(0, 229, 255, 0.08) 80%,
    transparent 100%);
  z-index: 1;
  pointer-events: none;
  animation: scanSweep 8s linear infinite;
  top: -2px;
}

@keyframes scanSweep {
  0%   { top: -2px; opacity: 0; }
  3%   { opacity: 1; }
  97%  { opacity: 1; }
  100% { top: 100vh; opacity: 0; }
}

/* Page content sits above canvas */
.page-wrapper {
  position: relative;
  z-index: 2;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main { flex: 1; }

/* ── Navigation ───────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  background: linear-gradient(
    to bottom,
    rgba(2, 4, 8, 0.95) 0%,
    rgba(2, 4, 8, 0.7) 100%
  );
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-dim);
  transition: border-color 0.3s;
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  color: var(--cyan);
  letter-spacing: 0.08em;
  text-shadow: var(--glow-cyan);
  white-space: nowrap;
  transition: text-shadow 0.3s;
}
.nav-logo:hover { text-shadow: 0 0 30px rgba(0,229,255,0.7); }

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

.nav-links a {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-dim);
  padding: 0.4rem 0.75rem;
  border-radius: 4px;
  letter-spacing: 0.05em;
  transition: color 0.2s, background 0.2s;
  position: relative;
}

.nav-links a::before {
  content: '// ';
  color: var(--cyan);
  opacity: 0;
  transition: opacity 0.2s;
}

.nav-links a:hover::before,
.nav-links a.active::before {
  opacity: 1;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--cyan);
  background: rgba(0, 229, 255, 0.06);
}

/* Hamburger */
.nav-hamburger {
  display: none;
  background: none;
  border: 1px solid var(--border);
  color: var(--cyan);
  font-size: 1.2rem;
  padding: 0.35rem 0.6rem;
  cursor: pointer;
  border-radius: 4px;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.nav-hamburger:hover { border-color: var(--cyan); box-shadow: var(--glow-cyan); }

/* ── Section Layout Helpers ───────────────────────────────── */
.section {
  padding: 5rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.section-full {
  padding: 5rem 2rem;
  width: 100%;
}

.section-header {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.section-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--cyan);
  opacity: 0.6;
  letter-spacing: 0.1em;
  flex-shrink: 0;
}

.section-title {
  font-size: 1.6rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.02em;
}

.section-title span {
  color: var(--cyan);
}

/* ── Hero Section ─────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(var(--nav-h) + 2rem) 2rem 4rem;
  position: relative;
}

/* HUD corner brackets */
.hero::before, .hero::after {
  content: '';
  position: absolute;
  width: 60px;
  height: 60px;
  pointer-events: none;
}
.hero::before {
  top: calc(var(--nav-h) + 1.5rem);
  left: 2rem;
  border-top: 2px solid var(--cyan);
  border-left: 2px solid var(--cyan);
  opacity: 0.4;
}
.hero::after {
  bottom: 2rem;
  right: 2rem;
  border-bottom: 2px solid var(--cyan);
  border-right: 2px solid var(--cyan);
  opacity: 0.4;
}

.hero-inner {
  max-width: 900px;
  width: 100%;
  position: relative;
}

/* Extra corner brackets as child elements */
.hero-corner-tl, .hero-corner-br {
  position: absolute;
  width: 40px;
  height: 40px;
  opacity: 0.3;
  pointer-events: none;
}
.hero-corner-tl {
  top: -1.5rem;
  right: 0;
  border-top: 2px solid var(--green);
  border-right: 2px solid var(--green);
}
.hero-corner-br {
  bottom: -1.5rem;
  left: 0;
  border-bottom: 2px solid var(--green);
  border-left: 2px solid var(--green);
}

.hero-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--cyan);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 1rem;
  opacity: 0.8;
}

.hero-name {
  font-size: clamp(3rem, 8vw, 6.5rem);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.04em;
  color: #fff;
  margin-bottom: 1.25rem;
}

.hero-title-wrap {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.status-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--green);
  flex-shrink: 0;
  animation: pulseDot 2s ease-in-out infinite;
  box-shadow: 0 0 8px var(--green);
}

@keyframes pulseDot {
  0%, 100% { opacity: 1; box-shadow: 0 0 8px var(--green); }
  50%       { opacity: 0.5; box-shadow: 0 0 3px var(--green); }
}

.hero-title {
  font-size: clamp(0.9rem, 2vw, 1.2rem);
  color: var(--text-dim);
  font-weight: 400;
  letter-spacing: 0.01em;
}

/* Terminal tagline block */
.terminal-block {
  background: rgba(0, 229, 255, 0.03);
  border: 1px solid rgba(0, 229, 255, 0.15);
  border-left: 3px solid var(--cyan);
  border-radius: 6px;
  padding: 1.25rem 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text);
  line-height: 1.7;
  position: relative;
  overflow: hidden;
}

.terminal-block::before {
  content: '$ ';
  color: var(--green);
}

.cursor {
  display: inline-block;
  width: 9px;
  height: 1.1em;
  background: var(--cyan);
  margin-left: 3px;
  vertical-align: text-bottom;
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

/* ── About Section ────────────────────────────────────────── */
.about-container {
  background: rgba(0, 229, 255, 0.02);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 2rem;
}

.terminal-header {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--green);
  margin-bottom: 1.25rem;
  opacity: 0.9;
}

.about-text {
  font-size: 1.0rem;
  color: var(--text);
  line-height: 1.8;
  max-width: 800px;
}

/* ── Stats Bar ────────────────────────────────────────────── */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.75rem 1.5rem;
  text-align: center;
  border-top-width: 3px;
  transition: transform 0.2s, box-shadow 0.2s;
}

.stat-card:hover {
  transform: translateY(-4px);
}

.stat-card[data-color="cyan"]   { border-top-color: var(--cyan);   }
.stat-card[data-color="green"]  { border-top-color: var(--green);  }
.stat-card[data-color="purple"] { border-top-color: var(--purple); }

.stat-card:hover[data-color="cyan"]   { box-shadow: 0 8px 30px rgba(0,229,255,0.12); }
.stat-card:hover[data-color="green"]  { box-shadow: 0 8px 30px rgba(0,255,136,0.12); }
.stat-card:hover[data-color="purple"] { box-shadow: 0 8px 30px rgba(178,77,255,0.12); }

.stat-value {
  font-size: 2.4rem;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat-card[data-color="cyan"]   .stat-value { color: var(--cyan);   }
.stat-card[data-color="green"]  .stat-value { color: var(--green);  }
.stat-card[data-color="purple"] .stat-value { color: var(--purple); }

.stat-label {
  font-size: 0.8rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
  line-height: 1.4;
}

/* ── Project Cards ────────────────────────────────────────── */
/* Featured row (horizontal scroll on home page) */
.featured-row {
  display: flex;
  gap: 1.5rem;
  overflow-x: auto;
  padding-bottom: 1rem;
  scrollbar-width: thin;
  scrollbar-color: var(--cyan) transparent;
}

.featured-row::-webkit-scrollbar { height: 4px; }
.featured-row::-webkit-scrollbar-track { background: transparent; }
.featured-row::-webkit-scrollbar-thumb { background: var(--cyan); border-radius: 2px; }

/* Full grid (projects page) */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}

/* Shared card styles */
.project-card {
  flex: 0 0 320px; /* for featured row */
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
  display: flex;
  flex-direction: column;
  position: relative;
}

.project-card:hover {
  transform: translateY(-6px) scale(1.02);
  box-shadow: 0 12px 40px rgba(0, 229, 255, 0.15),
              0 0 0 1px rgba(0, 229, 255, 0.25);
  border-color: rgba(0, 229, 255, 0.3);
}

/* Animated border glow on hover */
.project-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 10px;
  padding: 1px;
  background: linear-gradient(135deg, var(--cyan), transparent, var(--purple));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
}
.project-card:hover::before { opacity: 1; }

.card-thumb {
  height: 130px;
  background: linear-gradient(135deg, #060d14 0%, #0a1828 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.card-thumb::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(0,229,255,0.06) 0%, transparent 70%);
}

.card-category {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--cyan);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  opacity: 0.7;
  position: relative;
  z-index: 1;
}

.card-body {
  padding: 1.25rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.card-name {
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  line-height: 1.35;
}

.card-desc {
  font-size: 0.82rem;
  color: var(--text-dim);
  line-height: 1.6;
  flex: 1;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  padding: 0.2rem 0.5rem;
  border-radius: 3px;
  letter-spacing: 0.04em;
  border: 1px solid;
  transition: box-shadow 0.2s;
}

/* Tag color variants by tool type */
.tag-siem     { color: var(--cyan);   border-color: rgba(0,229,255,0.3);   background: rgba(0,229,255,0.05);   }
.tag-network  { color: var(--green);  border-color: rgba(0,255,136,0.3);   background: rgba(0,255,136,0.05);   }
.tag-forensic { color: var(--purple); border-color: rgba(178,77,255,0.3);  background: rgba(178,77,255,0.05);  }
.tag-threat   { color: var(--red);    border-color: rgba(255,61,90,0.3);   background: rgba(255,61,90,0.05);   }
.tag-default  { color: var(--text-dim); border-color: rgba(106,128,144,0.3); background: rgba(106,128,144,0.05); }

.tag:hover { box-shadow: 0 0 8px currentColor; }

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--cyan);
  opacity: 0.7;
  transition: opacity 0.2s;
  padding-top: 0.25rem;
  border-top: 1px solid var(--border-dim);
}
.card-link:hover { opacity: 1; }
.card-link svg { width: 12px; height: 12px; }

/* ── Filter Bar (Projects Page) ───────────────────────────── */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
}

.filter-btn {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 0.35rem 0.8rem;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-dim);
  cursor: pointer;
  letter-spacing: 0.06em;
  transition: color 0.2s, border-color 0.2s, box-shadow 0.2s, background 0.2s;
}

.filter-btn:hover {
  color: var(--cyan);
  border-color: rgba(0,229,255,0.4);
  background: rgba(0,229,255,0.05);
}

.filter-btn.active {
  color: var(--cyan);
  border-color: var(--cyan);
  background: rgba(0,229,255,0.08);
  box-shadow: var(--glow-cyan);
}

/* ── Certifications ───────────────────────────────────────── */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1.5rem;
}

.cert-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: border-color 0.3s, transform 0.25s;
  text-align: center;
}

/* Radial glow on hover */
.cert-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, rgba(0,229,255,0.12) 0%, transparent 65%);
  opacity: 0;
  transition: opacity 0.4s;
  pointer-events: none;
}

.cert-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0,229,255,0.35);
}
.cert-card:hover::before { opacity: 1; }

.cert-badge-circle {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  border: 2px solid var(--border);
  background: linear-gradient(135deg, #070f1a 0%, #0c1824 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.3s, box-shadow 0.3s;
  position: relative;
  z-index: 1;
}

.cert-card:hover .cert-badge-circle {
  border-color: var(--cyan);
  box-shadow: 0 0 25px rgba(0,229,255,0.3);
}

/* Real badge image — fills the circle */
.cert-badge-img {
  width: 88px;
  height: 88px;
  object-fit: contain;
  border-radius: 50%;
  display: block;
  transition: filter 0.3s;
}
.cert-card:hover .cert-badge-img {
  filter: drop-shadow(0 0 8px rgba(0, 229, 255, 0.5));
}

.cert-abbr {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--cyan);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-align: center;
  line-height: 1.3;
}

.cert-name {
  font-size: 0.78rem;
  color: var(--text-dim);
  line-height: 1.4;
  position: relative;
  z-index: 1;
}

.cert-verify-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--green);
  letter-spacing: 0.08em;
  opacity: 0;
  transition: opacity 0.3s;
  position: absolute;
  bottom: 1rem;
  left: 0;
  right: 0;
  text-align: center;
  z-index: 2;
}

.cert-card:hover .cert-verify-label { opacity: 1; }

/* ── Training Cards ───────────────────────────────────────── */
.training-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.5rem;
}

.training-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
  border-left: 3px solid var(--purple);
}

.training-card:hover {
  transform: translateY(-3px);
  border-color: rgba(178,77,255,0.35);
  box-shadow: 0 8px 30px rgba(178,77,255,0.1);
}

.training-name {
  font-size: 0.95rem;
  font-weight: 600;
  color: #fff;
  line-height: 1.4;
}

.training-desc {
  font-size: 0.82rem;
  color: var(--text-dim);
  line-height: 1.65;
  flex: 1;
}

/* ── Write-Up Cards ───────────────────────────────────────── */
.writeup-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 1.5rem;
}

.writeup-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-top: 3px solid var(--cyan); /* overridden per-card by JS */
  border-radius: 10px;
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
}

.writeup-card:hover {
  transform: translateY(-4px);
  /* box-shadow set by JS to match category color */
}

.writeup-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.writeup-category {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.2rem 0.55rem;
  border-radius: 3px;
  border: 1px solid;
  /* color, border-color, background set by JS */
}

.writeup-date {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-dim);
  white-space: nowrap;
  margin-left: auto;
}

.writeup-title {
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  line-height: 1.4;
}

.writeup-summary {
  font-size: 0.82rem;
  color: var(--text-dim);
  line-height: 1.65;
  flex: 1;
}

.writeup-read-more {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--cyan); /* overridden by JS */
  opacity: 0.7;
  padding-top: 0.5rem;
  border-top: 1px solid var(--border-dim);
  transition: opacity 0.2s;
  display: block;
}

.writeup-card:hover .writeup-read-more { opacity: 1; }

.writeup-empty {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-dim);
  padding: 2rem;
  border: 1px dashed var(--border);
  border-radius: 8px;
  text-align: center;
  grid-column: 1 / -1;
}

/* ── Contact Page ─────────────────────────────────────────── */
.contact-section {
  min-height: calc(100vh - var(--nav-h) - 80px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(var(--nav-h) + 3rem) 2rem 4rem;
}

.contact-inner {
  max-width: 600px;
  width: 100%;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
}

.contact-title {
  font-size: clamp(2.5rem, 7vw, 4.5rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1;
  background: linear-gradient(135deg, var(--cyan) 0%, var(--green) 50%, var(--purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.contact-subtitle {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  justify-content: center;
  font-size: 0.9rem;
  color: var(--text-dim);
  flex-wrap: wrap;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  width: 100%;
}

.contact-btn {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  padding: 1rem 1.5rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s, box-shadow 0.2s, background 0.2s;
  text-decoration: none;
  width: 100%;
}

.contact-btn-label { display: flex; align-items: center; gap: 0.75rem; }
.contact-btn-icon { font-size: 1.1rem; }

.contact-btn:hover {
  color: var(--cyan);
  border-color: var(--cyan);
  background: rgba(0,229,255,0.06);
  box-shadow: var(--glow-cyan);
}

.contact-btn.email:hover   { color: var(--green);  border-color: var(--green);  background: rgba(0,255,136,0.06);  box-shadow: var(--glow-green);  }
.contact-btn.github:hover  { color: var(--purple); border-color: var(--purple); background: rgba(178,77,255,0.06); box-shadow: var(--glow-purple); }

.contact-btn-arrow { opacity: 0.5; transition: opacity 0.2s, transform 0.2s; }
.contact-btn:hover .contact-btn-arrow { opacity: 1; transform: translateX(3px); }

/* ── Page Hero Banner (inner pages) ───────────────────────── */
.page-hero {
  padding: calc(var(--nav-h) + 4rem) 2rem 3rem;
  max-width: 1200px;
  margin: 0 auto;
}

.page-hero-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--cyan);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  opacity: 0.7;
  margin-bottom: 0.75rem;
}

.page-hero-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.page-hero-title span { color: var(--cyan); }

.page-hero-desc {
  margin-top: 0.75rem;
  font-size: 0.95rem;
  color: var(--text-dim);
  max-width: 600px;
}

/* ── Footer ───────────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--border-dim);
  padding: 1.75rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-logo {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--cyan);
  opacity: 0.7;
}

.footer-copy {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-dim);
  text-align: right;
}

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 768px) {
  /* Nav collapses */
  .nav-hamburger { display: block; }

  .nav-links {
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    background: rgba(2, 4, 8, 0.98);
    backdrop-filter: blur(12px);
    flex-direction: column;
    align-items: stretch;
    padding: 1rem;
    gap: 0.25rem;
    border-bottom: 1px solid var(--border);
    transform: translateY(-110%);
    transition: transform 0.3s ease;
  }

  .nav-links.open { transform: translateY(0); }

  .nav-links a {
    padding: 0.75rem 1rem;
    font-size: 0.9rem;
  }

  /* Stats */
  .stats-bar { grid-template-columns: 1fr; }

  /* Grids */
  .projects-grid { grid-template-columns: 1fr; }
  .cert-grid     { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); }
  .training-grid { grid-template-columns: 1fr; }

  /* Featured row — vertical on mobile */
  .featured-row {
    flex-direction: column;
    overflow-x: unset;
  }
  .project-card { flex: none; width: 100%; }

  .section { padding: 3rem 1.25rem; }
  .page-hero { padding: calc(var(--nav-h) + 2.5rem) 1.25rem 2rem; }
  .footer { flex-direction: column; align-items: center; text-align: center; }
  .footer-copy { text-align: center; }

  .contact-links { gap: 0.75rem; }
}

@media (max-width: 480px) {
  .hero-name { font-size: clamp(2.4rem, 12vw, 4rem); }
  .cert-grid { grid-template-columns: repeat(2, 1fr); }
  .filter-bar { gap: 0.35rem; }
}

/* ── Utility ──────────────────────────────────────────────── */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

.hidden { display: none !important; }

.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
  margin: 0;
}