/* ── Design tokens ───────────────────────────────── */
:root {
  --bg:          #0d1117;
  --bg-alt:      #161b22;
  --surface:     #21262d;
  --border:      #30363d;
  --text:        #c9d1d9;
  --text-dim:    #8b949e;
  --accent:      #00ff88;
  --accent-glow: rgba(0, 255, 136, 0.15);
  --accent-blue: #58a6ff;
  --font-mono:   'JetBrains Mono', 'Courier New', monospace;
  --font-sans:   'Inter', system-ui, sans-serif;
  --nav-h:       60px;
  --radius:      8px;
  --transition:  0.25s ease;
}

/* ── Base ────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-h);
}

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  min-width: 320px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

img { display: block; max-width: 100%; }

/* ── Canvas background ───────────────────────────── */
#bg-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

/* ── Utilities ───────────────────────────────────── */
.accent { color: var(--accent); }

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ── 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: rgba(13, 17, 23, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition);
}

.nav.scrolled { border-bottom-color: var(--border); }

.nav-logo {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-links a {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-dim);
  transition: color var(--transition);
}

.nav-links a:hover,
.nav-links a.active { color: var(--accent); }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Hero ────────────────────────────────────────── */
.hero {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: calc(var(--nav-h) + 2rem) 1.5rem 4rem;
}

/* Terminal window */
.terminal {
  width: 100%;
  max-width: 700px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  box-shadow:
    0 0 0 1px var(--border),
    0 20px 60px rgba(0, 0, 0, 0.6),
    0 0 40px var(--accent-glow);
}

.terminal-topbar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.terminal-dots { display: flex; gap: 6px; }

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.dot-r { background: #ff5f57; }
.dot-y { background: #febc2e; }
.dot-g { background: #28c840; }

.terminal-title {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-dim);
  margin: 0 auto;
}

.terminal-body {
  padding: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.8;
  min-height: 200px;
}

.t-line { display: flex; align-items: baseline; gap: 0.5rem; }
.t-prompt { color: var(--accent); user-select: none; }
.t-cmd { color: var(--text); }

.t-output {
  color: var(--text-dim);
  padding-left: 1.4rem;
  margin-bottom: 0.25rem;
}
.t-output .hl { color: var(--accent-blue); }

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

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

/* Scroll hint */
.scroll-hint {
  margin-top: 3rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-dim);
  animation: float 2s ease-in-out infinite;
  transition: color var(--transition);
}
.scroll-hint:hover { color: var(--accent); }
.scroll-arrow { font-size: 1.2rem; }

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(6px); }
}

/* ── Sections shared ─────────────────────────────── */
.section {
  position: relative;
  z-index: 1;
  padding: 5rem 0;
}

.section-alt { background: var(--bg-alt); }

.section-heading {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 2.5rem;
  color: var(--text);
}

/* Scroll reveal */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.visible { opacity: 1; transform: none; }
.reveal-item { opacity: 0; transform: translateX(-20px); transition: opacity 0.5s ease, transform 0.5s ease; }
.reveal-item.visible { opacity: 1; transform: none; }

/* ── About ───────────────────────────────────────── */
.about-grid {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 3rem;
  align-items: start;
}

.about-photo-wrap {
  position: relative;
}

.about-photo {
  width: 100%;
  border-radius: 12px;
  border: 2px solid var(--border);
  filter: grayscale(20%);
  transition: filter var(--transition), border-color var(--transition);
}

.about-photo-wrap:hover .about-photo {
  filter: none;
  border-color: var(--accent);
}

.about-name {
  font-size: 1.9rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 0.4rem;
}

.about-role {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}

.about-bio {
  color: var(--text-dim);
  margin-bottom: 0.9rem;
  max-width: 55ch;
}

.about-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.25rem;
}

.badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 0.3rem 0.75rem;
  border: 1px solid var(--accent);
  border-radius: 100px;
  color: var(--accent);
  background: var(--accent-glow);
  letter-spacing: 0.04em;
}

/* ── Skills ──────────────────────────────────────── */
.skills-columns {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.skill-group-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  margin-bottom: 1rem;
}

.skill-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.skill-chip {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.875rem;
  color: var(--text);
  transition: border-color var(--transition), background var(--transition), transform var(--transition);
  cursor: default;
}

.skill-chip:hover {
  border-color: var(--accent);
  background: var(--accent-glow);
  transform: translateX(4px);
}

.skill-chip img {
  flex-shrink: 0;
  filter: drop-shadow(0 0 4px rgba(0,0,0,0.4));
}

/* ── Timeline / Experience ───────────────────────── */
.timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.timeline-item {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 0 1.5rem;
  padding-bottom: 2.5rem;
}

.timeline-marker {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.timeline-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--bg);
  box-shadow: 0 0 0 3px var(--accent);
  flex-shrink: 0;
  margin-top: 4px;
}

.timeline-line {
  flex: 1;
  width: 2px;
  background: var(--border);
  margin-top: 6px;
}

.timeline-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  transition: border-color var(--transition);
}

.timeline-card:hover { border-color: var(--accent); }

.timeline-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.85rem;
}

.timeline-period {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
}

.timeline-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.2rem 0.65rem;
  background: var(--accent-glow);
  border: 1px solid var(--accent);
  border-radius: 100px;
  color: var(--accent);
}

.timeline-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.timeline-list li {
  font-size: 0.875rem;
  color: var(--text-dim);
  padding-left: 1.25rem;
  position: relative;
}

.timeline-list li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--accent);
}

/* ── Contact ─────────────────────────────────────── */
.contact-container {
  text-align: center;
}

.contact-tagline {
  color: var(--text-dim);
  font-size: 1.05rem;
  margin-bottom: 2rem;
}

.contact-email {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--accent);
  padding: 0.6rem 1.5rem;
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  background: var(--accent-glow);
  margin-bottom: 2.5rem;
  transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
}

.contact-email:hover {
  background: rgba(0, 255, 136, 0.25);
  box-shadow: 0 0 20px var(--accent-glow);
  transform: translateY(-2px);
}

.social-row {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.social-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.875rem;
  color: var(--text);
  transition: border-color var(--transition), background var(--transition), transform var(--transition);
}

.social-btn:hover {
  border-color: var(--accent);
  background: var(--accent-glow);
  transform: translateY(-2px);
}

/* ── Footer ──────────────────────────────────────── */
.footer {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 2rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
  border-top: 1px solid var(--border);
}

/* ── Mobile nav ──────────────────────────────────── */
@media (max-width: 767px) {
  .nav-toggle { display: flex; }

  .nav-links {
    display: none;
    position: fixed;
    top: var(--nav-h);
    left: 0; right: 0;
    background: var(--bg-alt);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    gap: 0;
    padding: 0.5rem 0;
    z-index: 99;
  }

  .nav-links.open { display: flex; }

  .nav-links li { width: 100%; }

  .nav-links a {
    display: block;
    padding: 0.85rem 2rem;
    font-size: 0.9rem;
    border-left: 3px solid transparent;
  }

  .nav-links a:hover,
  .nav-links a.active {
    border-left-color: var(--accent);
    background: var(--accent-glow);
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .about-photo-wrap { max-width: 160px; margin: 0 auto; }

  .skills-columns { grid-template-columns: 1fr; }

  .terminal-body { font-size: 0.78rem; padding: 1rem; }

  .section { padding: 3.5rem 0; }
}

/* ── Tablet ──────────────────────────────────────── */
@media (min-width: 768px) and (max-width: 959px) {
  .skills-columns { grid-template-columns: repeat(2, 1fr); }
}


/* ── Pipeline section ────────────────────────────── */
.pipeline-subtitle {
  color: var(--text-dim);
  margin-bottom: 2rem;
  max-width: 60ch;
}

.pipeline-wrap {
  position: relative;
}

.pipeline-backdrop {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
  border-radius: 12px;
}

.float-word {
  position: absolute;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--accent);
  opacity: 0;
  pointer-events: none;
  white-space: nowrap;
  transition: opacity 1.2s ease, transform 10s linear;
  user-select: none;
}

.pipeline-terminal {
  position: relative;
  z-index: 1;
}

.pipeline-body {
  padding: 1.25rem 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  min-height: 56px;
}

.pipeline-prompt-line {
  margin-bottom: 1rem;
  opacity: 0.8;
}

.pipeline-output {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  max-height: 380px;
  overflow-y: auto;
}

/* Pipeline line */
.p-line {
  display: grid;
  grid-template-columns: 64px 1fr auto auto;
  align-items: baseline;
  gap: 0.5rem;
  line-height: 1.7;
}

.p-prefix {
  font-size: 0.65rem;
  font-weight: 700;
  padding: 0.1rem 0.35rem;
  border-radius: 3px;
  text-align: center;
  justify-self: start;
  min-width: 52px;
}
.p-prefix.build  { background: rgba(88,166,255,0.12);  color: #58a6ff; border: 1px solid rgba(88,166,255,0.25); }
.p-prefix.test   { background: rgba(63,185,80,0.12);   color: #3fb950; border: 1px solid rgba(63,185,80,0.25); }
.p-prefix.scan   { background: rgba(210,153,34,0.12);  color: #d29922; border: 1px solid rgba(210,153,34,0.25); }
.p-prefix.push   { background: rgba(188,140,255,0.12); color: #bc8cff; border: 1px solid rgba(188,140,255,0.25); }
.p-prefix.infra  { background: rgba(123,66,188,0.12);  color: #9B59B6; border: 1px solid rgba(123,66,188,0.25); }
.p-prefix.deploy { background: rgba(0,255,136,0.08);   color: var(--accent); border: 1px solid rgba(0,255,136,0.25); }
.p-prefix.health { background: rgba(63,185,80,0.12);   color: #3fb950; border: 1px solid rgba(63,185,80,0.25); }

.p-text  { color: var(--text-dim); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.p-dots  { color: var(--border); white-space: nowrap; overflow: hidden; }

.p-status           { font-size: 0.72rem; white-space: nowrap; color: var(--text-dim); }
.p-status.done      { color: #3fb950; }
.p-status.running   { color: var(--accent); animation: pulse 1s ease-in-out infinite; }

@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:0.35} }

.p-trigger { color: var(--text-dim); margin-bottom: 0.6rem; font-size: 0.82rem; }
.p-trigger .hl { color: var(--accent-blue); }

.p-divider { color: var(--border); margin: 0.4rem 0; font-size: 0.75rem; user-select: none; letter-spacing: -0.02em; }

.p-success {
  margin-top: 0.5rem;
  padding: 0.75rem 1rem;
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  background: var(--accent-glow);
  color: var(--accent);
  font-size: 0.82rem;
  animation: fadeSlideIn 0.4s ease;
}

@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: none; }
}

.pipeline-controls {
  margin-top: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

.pipeline-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.7rem 1.5rem;
  background: var(--accent);
  color: var(--bg);
  border: none;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 700;
  cursor: pointer;
  transition: opacity var(--transition), transform var(--transition), box-shadow var(--transition);
  letter-spacing: 0.01em;
}
.pipeline-btn:hover:not(:disabled) {
  opacity: 0.88;
  transform: translateY(-2px);
  box-shadow: 0 0 24px var(--accent-glow);
}
.pipeline-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
}
.pipeline-btn.restart {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}

.pipeline-hint {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-dim);
}

/* ── Skills: 4-column override ───────────────────── */
.skills-columns {
  grid-template-columns: repeat(4, 1fr) !important;
}
@media (max-width: 959px) { .skills-columns { grid-template-columns: repeat(2, 1fr) !important; } }
@media (max-width: 600px)  { .skills-columns { grid-template-columns: 1fr !important; } }

/* ── Principles section ──────────────────────────── */
.principles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.principle-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}
.principle-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(0,255,136,0.08);
}

.principle-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--accent);
  letter-spacing: 0.12em;
  margin-bottom: 0.75rem;
}
.principle-card h3 {
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 0.75rem;
}
.principle-card p {
  font-size: 0.85rem;
  color: var(--text-dim);
  line-height: 1.6;
}

@media (max-width: 767px) { .principles-grid { grid-template-columns: 1fr; } }
@media (min-width: 768px) and (max-width: 900px) { .principles-grid { grid-template-columns: 1fr; } }