/* ======================================================================
   CHHORN ROTHANA — IT INFRASTRUCTURE PORTFOLIO
   Design tokens
   ====================================================================== */

:root {
  /* Core palette (brief-specified) */
  --bg: #0F172A;
  --bg-elevated: #131f38;
  --surface: #1E293B;
  --surface-soft: rgba(30, 41, 59, 0.55);
  --border-soft: rgba(148, 163, 184, 0.14);
  --primary: #3B82F6;
  --secondary: #38BDF8;
  --accent: #06B6D4;
  --text: #FFFFFF;
  --text-secondary: #94A3B8;

  --gradient-brand: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 55%, var(--accent) 100%);
  --gradient-radial: radial-gradient(circle at 30% 20%, rgba(59, 130, 246, 0.20), transparent 55%);

  /* Typography */
  --font-display: 'Sora', 'Segoe UI', sans-serif;
  --font-body: 'Inter', 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;

  /* Rhythm */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --section-pad: clamp(72px, 10vw, 128px);
  --container: 1180px;

  --shadow-glow: 0 0 0 1px rgba(59,130,246,0.08), 0 20px 60px -20px rgba(6, 182, 212, 0.35);
  --transition: 240ms cubic-bezier(.4,0,.2,1);
}

html[data-theme="light"] {
  --bg: #F4F7FB;
  --bg-elevated: #ECF1F8;
  --surface: #FFFFFF;
  --surface-soft: rgba(255, 255, 255, 0.7);
  --border-soft: rgba(15, 23, 42, 0.08);
  --text: #0F172A;
  --text-secondary: #47536B;
  --shadow-glow: 0 0 0 1px rgba(59,130,246,0.06), 0 20px 60px -20px rgba(6, 182, 212, 0.20);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* ======================================================================
   Reset & base
   ====================================================================== */

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

html {
  scroll-behavior: smooth;
  font-size: 100%;
}

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

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, textarea { font: inherit; }

.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(20px, 5vw, 40px);
}

section { padding-block: var(--section-pad); position: relative; }

::selection { background: var(--accent); color: #041018; }

/* Focus visibility */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--secondary);
  outline-offset: 3px;
  border-radius: 4px;
}

::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--surface); border-radius: 10px; border: 2px solid var(--bg); }

/* ======================================================================
   Typography
   ====================================================================== */

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.12;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--secondary);
  margin-bottom: 14px;
}

.eyebrow::before {
  content: '';
  width: 22px;
  height: 1px;
  background: var(--secondary);
  display: inline-block;
}

.section-head {
  max-width: 640px;
  margin-bottom: 56px;
}

.section-head h2 {
  font-size: clamp(1.9rem, 3.4vw, 2.6rem);
  margin-bottom: 14px;
}

.section-head p {
  color: var(--text-secondary);
  font-size: 1.02rem;
}

.text-secondary { color: var(--text-secondary); }

/* ======================================================================
   Buttons
   ====================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 26px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-brand);
  color: #04101f;
  font-weight: 600;
  box-shadow: 0 12px 30px -10px rgba(59, 130, 246, 0.55);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 36px -8px rgba(6, 182, 212, 0.6); }

.btn-ghost {
  border: 1px solid var(--border-soft);
  color: var(--text);
  background: var(--surface-soft);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover { border-color: var(--secondary); color: var(--secondary); transform: translateY(-2px); }

.btn-sm { padding: 9px 18px; font-size: 0.78rem; }

/* ======================================================================
   Nav
   ====================================================================== */

.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 18px 0;
  transition: background var(--transition), border-color var(--transition), padding var(--transition);
  border-bottom: 1px solid transparent;
}

.nav.scrolled {
  background: rgba(15, 23, 42, 0.72);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-soft);
  padding: 12px 0;
}
html[data-theme="light"] .nav.scrolled { background: rgba(244, 247, 251, 0.78); }

.nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 1rem;
  display: flex;
  align-items: center;
  gap: 10px;
}
.brand .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 12px var(--accent); animation: pulse-dot 2.4s infinite; }

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.7); }
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
  font-size: 0.9rem;
}

.nav-links a {
  color: var(--text-secondary);
  position: relative;
  padding-bottom: 4px;
  transition: color var(--transition);
}
.nav-links a::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 1px;
  background: var(--secondary);
  transition: width var(--transition);
}
.nav-links a:hover { color: var(--text); }
.nav-links a:hover::after { width: 100%; }

.nav-actions { display: flex; align-items: center; gap: 14px; }

.theme-toggle {
  width: 38px; height: 38px;
  border-radius: 50%;
  border: 1px solid var(--border-soft);
  display: flex; align-items: center; justify-content: center;
  background: var(--surface-soft);
  transition: border-color var(--transition), transform var(--transition);
}
.theme-toggle:hover { border-color: var(--secondary); transform: rotate(20deg); }
.theme-toggle svg { width: 17px; height: 17px; }
.theme-toggle .icon-sun { display: none; }
html[data-theme="light"] .theme-toggle .icon-moon { display: none; }
html[data-theme="light"] .theme-toggle .icon-sun { display: block; }

.nav-toggle {
  display: none;
  width: 38px; height: 38px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
}
.nav-toggle span { width: 20px; height: 2px; background: var(--text); transition: var(--transition); }

/* ======================================================================
   Hero
   ====================================================================== */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 120px;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background: var(--gradient-radial);
}

.hero-bg svg { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0.5; }
html[data-theme="light"] .hero-bg svg { opacity: 0.28; }

.hero .container {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}

.hero-text .eyebrow { }

.hero-text h1 {
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  margin-bottom: 14px;
}
.hero-text h1 .accent-name {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-role {
  font-family: var(--font-mono);
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  color: var(--secondary);
  min-height: 1.6em;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
}
.hero-role .cursor { display: inline-block; width: 2px; height: 1.1em; background: var(--secondary); margin-left: 4px; animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

.hero-text p.desc {
  color: var(--text-secondary);
  max-width: 520px;
  margin-bottom: 34px;
  font-size: 1.02rem;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 44px; }

.hero-stats {
  display: flex;
  gap: 34px;
}
.hero-stats div strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.5rem;
}
.hero-stats div span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* Signature element: terminal window */
.terminal {
  position: relative;
  border-radius: var(--radius-lg);
  background: var(--bg-elevated);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-glow);
  overflow: hidden;
}

.terminal-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: rgba(148, 163, 184, 0.06);
  border-bottom: 1px solid var(--border-soft);
}
.terminal-bar .tdot { width: 11px; height: 11px; border-radius: 50%; }
.tdot.red { background: #ff5f57; }
.tdot.yellow { background: #febc2e; }
.tdot.green { background: #28c840; }
.terminal-bar .terminal-title {
  margin-left: 10px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.terminal-body {
  padding: 22px 22px 26px;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  min-height: 300px;
}
.terminal-body .line { margin-bottom: 10px; color: var(--text-secondary); }
.terminal-body .prompt { color: var(--accent); }
.terminal-body .path { color: var(--secondary); }
.terminal-body .out { color: var(--text); }
.terminal-body .ok { color: #4ade80; }
#terminal-typed { color: var(--text); white-space: pre-wrap; }
.term-cursor { display: inline-block; width: 8px; height: 15px; background: var(--secondary); vertical-align: middle; animation: blink 1s steps(1) infinite; }

.profile-float {
  position: absolute;
  right: -16px;
  bottom: -16px;
  width: 92px; height: 92px;
  border-radius: 50%;
  padding: 3px;
  background: var(--gradient-brand);
  box-shadow: 0 10px 40px -8px rgba(6,182,212,.6);
  animation: floaty 4.5s ease-in-out infinite;
}
.profile-float img { border-radius: 50%; border: 3px solid var(--bg); }
@keyframes floaty { 0%,100%{ transform: translateY(0);} 50%{ transform: translateY(-10px);} }

.scroll-cue {
  position: absolute;
  bottom: 28px; left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-secondary);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  z-index: 2;
}
.scroll-cue .line-anim { width: 1px; height: 30px; background: linear-gradient(var(--secondary), transparent); animation: scrolldown 1.8s infinite; }
@keyframes scrolldown { 0% { opacity: 0; } 40% { opacity: 1;} 100% { opacity: 0; transform: translateY(10px);} }

/* ======================================================================
   Reveal on scroll
   ====================================================================== */

.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: .08s; }
.reveal-delay-2 { transition-delay: .16s; }
.reveal-delay-3 { transition-delay: .24s; }
.reveal-delay-4 { transition-delay: .32s; }

/* ======================================================================
   About
   ====================================================================== */

.about .container { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 64px; align-items: start; }

.about-card {
  background: var(--surface-soft);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 30px;
  backdrop-filter: blur(10px);
}
.about-card .avatar-ring {
  width: 100%;
  aspect-ratio: 1;
  border-radius: var(--radius-md);
  background: var(--gradient-brand);
  padding: 3px;
  margin-bottom: 22px;
}
.about-card .avatar-ring img { border-radius: calc(var(--radius-md) - 3px); width: 100%; height: 100%; object-fit: cover; }

.info-row { display: flex; justify-content: space-between; padding: 12px 0; border-bottom: 1px solid var(--border-soft); font-size: 0.92rem; }
.info-row:last-child { border-bottom: none; }
.info-row span.label { color: var(--text-secondary); font-family: var(--font-mono); font-size: 0.78rem; text-transform: uppercase; letter-spacing: .05em;}

.about-bio p { color: var(--text-secondary); margin-bottom: 18px; }
.about-bio p:first-child { color: var(--text); font-size: 1.08rem; }

.tag-cloud { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.tag {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid var(--border-soft);
  color: var(--secondary);
  background: var(--surface-soft);
  transition: border-color var(--transition), transform var(--transition);
}
.tag:hover { border-color: var(--secondary); transform: translateY(-2px); }

/* ======================================================================
   Skills
   ====================================================================== */

.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.skill-card {
  background: var(--surface-soft);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 26px;
  backdrop-filter: blur(10px);
  transition: transform var(--transition), border-color var(--transition);
}
.skill-card:hover { transform: translateY(-4px); border-color: rgba(56,189,248,0.4); }

.skill-card h3 {
  font-size: 1.02rem;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.skill-card h3 .icon-box {
  width: 34px; height: 34px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  background: var(--gradient-brand);
  flex-shrink: 0;
}
.skill-card h3 .icon-box svg { width: 18px; height: 18px; stroke: #04101f; }

.skill-item { margin-bottom: 16px; }
.skill-item:last-child { margin-bottom: 0; }
.skill-item .skill-label {
  display: flex; justify-content: space-between;
  font-size: 0.82rem;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  color: var(--text-secondary);
}
.skill-bar-track {
  height: 6px;
  border-radius: 4px;
  background: rgba(148,163,184,0.14);
  overflow: hidden;
}
.skill-bar-fill {
  height: 100%;
  border-radius: 4px;
  width: 0%;
  background: var(--gradient-brand);
  transition: width 1.2s cubic-bezier(.4,0,.2,1);
}

/* ======================================================================
   Experience timeline
   ====================================================================== */

.timeline { position: relative; max-width: 820px; margin-inline: auto; }
.timeline::before {
  content: '';
  position: absolute;
  left: 26px; top: 8px; bottom: 8px;
  width: 1px;
  background: linear-gradient(var(--primary), var(--accent));
  opacity: .4;
}

.timeline-item {
  position: relative;
  padding-left: 70px;
  margin-bottom: 46px;
}
.timeline-item:last-child { margin-bottom: 0; }
.timeline-item .node {
  position: absolute;
  left: 16px; top: 4px;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--secondary);
  display: flex; align-items: center; justify-content: center;
}
.timeline-item .node::after { content: ''; width: 8px; height: 8px; border-radius: 50%; background: var(--secondary); box-shadow: 0 0 10px var(--secondary); }

.timeline-card {
  background: var(--surface-soft);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 26px 28px;
  backdrop-filter: blur(10px);
}
.timeline-card .role-title { font-family: var(--font-display); font-size: 1.1rem; margin-bottom: 4px; }
.timeline-card .role-company { color: var(--secondary); font-family: var(--font-mono); font-size: 0.85rem; margin-bottom: 16px; }
.timeline-card ul { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 20px; }
.timeline-card ul li { color: var(--text-secondary); font-size: 0.9rem; padding-left: 16px; position: relative; }
.timeline-card ul li::before { content: '›'; position: absolute; left: 0; color: var(--accent); }

/* ======================================================================
   Projects
   ====================================================================== */

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.project-card {
  background: var(--surface-soft);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  overflow: hidden;
  backdrop-filter: blur(10px);
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
  display: flex; flex-direction: column;
}
.project-card:hover { transform: translateY(-6px); border-color: rgba(56,189,248,.4); box-shadow: var(--shadow-glow); }

.project-thumb { aspect-ratio: 16/10; overflow: hidden; background: var(--bg-elevated); position: relative; }
.project-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.project-card:hover .project-thumb img { transform: scale(1.06); }

.project-body { padding: 22px; display: flex; flex-direction: column; flex: 1; }
.project-body h3 { font-size: 1.08rem; margin-bottom: 10px; }
.project-body p { color: var(--text-secondary); font-size: 0.9rem; margin-bottom: 16px; flex: 1; }

.badge-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 5px 10px;
  border-radius: 6px;
  background: rgba(59,130,246,0.12);
  color: var(--secondary);
  border: 1px solid rgba(56,189,248,0.2);
}

.project-links { display: flex; gap: 10px; }

/* ======================================================================
   Certifications
   ====================================================================== */

.cert-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.cert-card {
  background: var(--surface-soft);
  border: 1px dashed var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 26px;
  text-align: center;
  backdrop-filter: blur(10px);
  transition: transform var(--transition), border-color var(--transition);
}
.cert-card:hover { transform: translateY(-4px); border-color: var(--secondary); }
.cert-card .cert-icon {
  width: 52px; height: 52px;
  border-radius: 14px;
  margin: 0 auto 16px;
  display: flex; align-items: center; justify-content: center;
  background: var(--gradient-brand);
}
.cert-card .cert-icon svg { width: 26px; height: 26px; stroke: #04101f; }
.cert-card h4 { font-size: 0.98rem; margin-bottom: 6px; }
.cert-card span { font-family: var(--font-mono); font-size: 0.72rem; color: var(--accent); text-transform: uppercase; letter-spacing: .05em; }

.cert-card.add-more { border-style: dashed; display: flex; flex-direction: column; align-items: center; justify-content: center; color: var(--text-secondary); }
.cert-card.add-more svg { width: 30px; height: 30px; margin-bottom: 12px; stroke: var(--text-secondary); }

/* ======================================================================
   Education (compact band)
   ====================================================================== */

.edu-band {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  background: var(--surface-soft);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 32px 36px;
  backdrop-filter: blur(10px);
  flex-wrap: wrap;
}
.edu-band .edu-left { display: flex; align-items: center; gap: 20px; }
.edu-band .edu-icon {
  width: 56px; height: 56px; border-radius: 16px;
  background: var(--gradient-brand);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.edu-band .edu-icon svg { width: 28px; height: 28px; stroke: #04101f; }
.edu-band h3 { font-size: 1.1rem; margin-bottom: 4px; }
.edu-band .edu-meta { color: var(--text-secondary); font-size: 0.9rem; }
.edu-band .edu-grad {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--accent);
  border: 1px solid rgba(6,182,212,.3);
  padding: 8px 16px;
  border-radius: 999px;
}

/* ======================================================================
   Statistics
   ====================================================================== */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  text-align: center;
}
.stat-card {
  padding: 34px 20px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-soft);
  background: var(--surface-soft);
  backdrop-filter: blur(10px);
}
.stat-card .num {
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 4vw, 2.7rem);
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 6px;
}
.stat-card .stat-label {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: .06em;
}

/* ======================================================================
   Testimonials
   ====================================================================== */

.testimonial-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.testimonial-card {
  background: var(--surface-soft);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 28px;
  backdrop-filter: blur(10px);
}
.testimonial-card .quote-mark { font-family: var(--font-display); font-size: 2.4rem; color: var(--secondary); line-height: 1; margin-bottom: 8px; opacity: .7; }
.testimonial-card p.quote { color: var(--text-secondary); margin-bottom: 20px; font-size: 0.94rem; }
.testimonial-person { display: flex; align-items: center; gap: 12px; }
.testimonial-person .t-avatar { width: 40px; height: 40px; border-radius: 50%; background: var(--gradient-brand); display:flex; align-items:center; justify-content:center; font-family: var(--font-mono); font-size: .8rem; color:#04101f; font-weight:700; }
.testimonial-person strong { display: block; font-size: 0.88rem; }
.testimonial-person span { font-family: var(--font-mono); font-size: 0.72rem; color: var(--text-secondary); }

/* ======================================================================
   Blog
   ====================================================================== */

.blog-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.blog-card {
  background: var(--surface-soft);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 26px;
  backdrop-filter: blur(10px);
  transition: transform var(--transition), border-color var(--transition);
}
.blog-card:hover { transform: translateY(-4px); border-color: rgba(56,189,248,.4); }
.blog-card .blog-tag { font-family: var(--font-mono); font-size: 0.7rem; color: var(--accent); text-transform: uppercase; letter-spacing: .05em; margin-bottom: 14px; display: block; }
.blog-card h3 { font-size: 1.02rem; margin-bottom: 12px; }
.blog-card .blog-meta { color: var(--text-secondary); font-size: 0.82rem; display: flex; justify-content: space-between; margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--border-soft); }

/* ======================================================================
   Contact
   ====================================================================== */

.contact .container { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 60px; }

.contact-list { display: flex; flex-direction: column; gap: 16px; margin-top: 30px; }
.contact-item {
  display: flex; align-items: center; gap: 16px;
  padding: 16px 18px;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  background: var(--surface-soft);
  transition: border-color var(--transition), transform var(--transition);
}
.contact-item:hover { border-color: var(--secondary); transform: translateX(4px); }
.contact-item .c-icon {
  width: 40px; height: 40px; border-radius: 10px;
  background: var(--gradient-brand);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.contact-item .c-icon svg { width: 19px; height: 19px; stroke: #04101f; }
.contact-item .c-label { font-family: var(--font-mono); font-size: 0.7rem; color: var(--text-secondary); text-transform: uppercase; letter-spacing: .05em; }
.contact-item .c-value { font-size: 0.94rem; }

.contact-form {
  background: var(--surface-soft);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 34px;
  backdrop-filter: blur(10px);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.form-group { margin-bottom: 16px; display: flex; flex-direction: column; gap: 8px; }
.form-group label { font-family: var(--font-mono); font-size: 0.76rem; color: var(--text-secondary); text-transform: uppercase; letter-spacing: .05em; }
.form-group input, .form-group textarea {
  background: var(--bg-elevated);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  color: var(--text);
  transition: border-color var(--transition);
}
.form-group input:focus, .form-group textarea:focus { border-color: var(--secondary); outline: none; }
.form-group textarea { resize: vertical; min-height: 120px; }
.form-status { font-family: var(--font-mono); font-size: 0.82rem; margin-top: 14px; min-height: 20px; color: var(--accent); }

/* ======================================================================
   Footer
   ====================================================================== */

.site-footer {
  border-top: 1px solid var(--border-soft);
  padding: 40px 0;
}
.site-footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.86rem;
  color: var(--text-secondary);
}
.footer-socials { display: flex; gap: 14px; }
.footer-socials a {
  width: 36px; height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border-soft);
  display: flex; align-items: center; justify-content: center;
  transition: border-color var(--transition), transform var(--transition);
}
.footer-socials a:hover { border-color: var(--secondary); transform: translateY(-3px); }
.footer-socials svg { width: 16px; height: 16px; }

.back-to-top {
  position: fixed;
  right: 26px; bottom: 26px;
  width: 46px; height: 46px;
  border-radius: 50%;
  background: var(--gradient-brand);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 10px 30px -8px rgba(6,182,212,.6);
  opacity: 0; pointer-events: none;
  transition: opacity var(--transition), transform var(--transition);
  z-index: 90;
}
.back-to-top.visible { opacity: 1; pointer-events: auto; }
.back-to-top:hover { transform: translateY(-4px); }
.back-to-top svg { width: 18px; height: 18px; stroke: #04101f; }

/* ======================================================================
   Responsive
   ====================================================================== */

@media (max-width: 980px) {
  .hero .container { grid-template-columns: 1fr; }
  .terminal { max-width: 520px; margin: 0 auto; }
  .about .container { grid-template-columns: 1fr; }
  .skills-grid { grid-template-columns: repeat(2, 1fr); }
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
  .cert-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonial-grid { grid-template-columns: repeat(2, 1fr); }
  .blog-grid { grid-template-columns: repeat(2, 1fr); }
  .contact .container { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .skills-grid, .projects-grid, .cert-grid, .stats-grid, .testimonial-grid, .blog-grid { grid-template-columns: 1fr; }
  .timeline-card ul { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .edu-band { flex-direction: column; align-items: flex-start; }
  .hero-stats { flex-wrap: wrap; gap: 22px; }
}

/* Mobile nav drawer */
.nav-links.open {
  display: flex;
  position: absolute;
  top: 64px; left: 0; right: 0;
  flex-direction: column;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border-soft);
  padding: 24px clamp(20px,5vw,40px);
  gap: 20px;
}