/* ============================================================
   Baljot Singh — DevOps Portfolio
   Pure CSS. No frameworks. Dark terminal aesthetic.
   ============================================================ */

:root {
  --bg: #0a0e14;
  --bg-raised: #0f141d;
  --bg-card: #111826;
  --border: #1d2735;
  --border-bright: #2b3a50;
  --text: #d7e0ec;
  --text-dim: #8a97a8;
  --accent: #2dd4a7;
  --accent-dim: rgba(45, 212, 167, 0.12);
  --accent-glow: rgba(45, 212, 167, 0.35);
  --amber: #f0b429;
  --red: #f0596b;
  --mono: ui-monospace, "SF Mono", "Cascadia Code", "JetBrains Mono", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --radius: 12px;
  --nav-h: 64px;
}

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

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 12px); }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; }
.mono { font-family: var(--mono); font-size: 0.85em; }
.accent { color: var(--accent); }

.container {
  width: min(1100px, 100% - 2.5rem);
  margin-inline: auto;
}

/* ---------- background grid ---------- */
.bg-grid {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 44px 44px;
  opacity: 0.35;
  mask-image: radial-gradient(ellipse 90% 60% at 50% 0%, black 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 90% 60% at 50% 0%, black 30%, transparent 75%);
}

/* ============================================================
   NAV
   ============================================================ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: rgba(10, 14, 20, 0.75);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  width: min(1100px, 100% - 2.5rem);
  margin-inline: auto;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--mono);
  font-size: 1.05rem;
  font-weight: 700;
  text-decoration: none;
  letter-spacing: 0.02em;
}
.logo-prompt { color: var(--accent); }
.logo-cursor {
  color: var(--accent);
  animation: blink 1.1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}
.nav-links a {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.2s;
  position: relative;
}
.nav-links a:hover { color: var(--accent); }
.nav-links a:not(.nav-cta)::before {
  content: "./";
  color: var(--accent);
  opacity: 0;
  position: absolute;
  left: -1.1em;
  transition: opacity 0.2s;
}
.nav-links a:not(.nav-cta):hover::before { opacity: 1; }

.nav-cta {
  border: 1px solid var(--accent);
  color: var(--accent) !important;
  padding: 0.4rem 0.9rem;
  border-radius: 8px;
  transition: background 0.2s, box-shadow 0.2s;
}
.nav-cta:hover {
  background: var(--accent-dim);
  box-shadow: 0 0 18px var(--accent-glow);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 110;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  margin: 5px 0;
  border-radius: 2px;
  transition: transform 0.25s, opacity 0.25s;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  padding-top: calc(var(--nav-h) + clamp(3rem, 8vh, 6rem));
  padding-bottom: clamp(2rem, 5vh, 4rem);
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

.hero-status {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--text-dim);
  border: 1px solid var(--border);
  background: var(--bg-raised);
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  margin-bottom: 1.4rem;
}
.status-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 var(--accent-glow);
  animation: pulse 2.2s ease-out infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 var(--accent-glow); }
  70%  { box-shadow: 0 0 0 9px transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}

.hero-title {
  font-size: clamp(2.6rem, 7vw, 4.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.05;
}

.hero-role {
  font-family: var(--mono);
  font-size: clamp(1.05rem, 2.5vw, 1.35rem);
  color: var(--accent);
  margin-top: 0.6rem;
}
.hero-role::before { content: "> "; color: var(--text-dim); }

.hero-tagline {
  margin-top: 1.2rem;
  max-width: 46ch;
  color: var(--text-dim);
  font-size: clamp(1rem, 2vw, 1.1rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 2rem;
}
.hero-actions.center { justify-content: center; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--mono);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  padding: 0.7rem 1.4rem;
  border-radius: 10px;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
}
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--accent);
  color: #06281e;
}
.btn-primary:hover {
  box-shadow: 0 0 26px var(--accent-glow);
  transform: translateY(-2px);
}

.btn-ghost {
  border: 1px solid var(--border-bright);
  color: var(--text);
  background: var(--bg-raised);
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

.hero-socials {
  display: flex;
  gap: 1.1rem;
  margin-top: 2rem;
}
.hero-socials a {
  color: var(--text-dim);
  transition: color 0.2s, transform 0.2s;
}
.hero-socials a:hover {
  color: var(--accent);
  transform: translateY(-2px);
}

/* ---------- terminal ---------- */
.terminal {
  background: #0b1017;
  border: 1px solid var(--border-bright);
  border-radius: var(--radius);
  box-shadow:
    0 20px 60px rgba(0, 0, 0, 0.55),
    0 0 40px rgba(45, 212, 167, 0.06);
  overflow: hidden;
  font-family: var(--mono);
  font-size: 0.85rem;
}

.terminal-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 0.65rem 0.9rem;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
}
.t-dot { width: 11px; height: 11px; border-radius: 50%; }
.t-dot.red { background: var(--red); }
.t-dot.yellow { background: var(--amber); }
.t-dot.green { background: var(--accent); }
.terminal-title {
  margin-left: 0.6rem;
  color: var(--text-dim);
  font-size: 0.75rem;
}

.terminal-body {
  padding: 1rem 1.1rem 1.3rem;
  min-height: 275px;
  line-height: 1.8;
  white-space: pre-wrap;
  word-break: break-word;
}
.terminal-body .t-prompt { color: var(--accent); }
.terminal-body .t-cmd { color: var(--text); }
.terminal-body .t-out { color: var(--text-dim); }
.terminal-body .t-ok { color: var(--accent); }
.terminal-body .t-key { color: #6cb6ff; }
.t-caret {
  display: inline-block;
  width: 8px;
  height: 1em;
  background: var(--accent);
  vertical-align: text-bottom;
  animation: blink 1s steps(1) infinite;
}

/* ---------- pipeline strip ---------- */
.pipeline {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: clamp(2.5rem, 6vh, 4rem);
  font-family: var(--mono);
  font-size: 0.78rem;
  overflow-x: auto;
  padding-bottom: 0.5rem;
  scrollbar-width: none;
}
.pipeline::-webkit-scrollbar { display: none; }

.pipe-stage {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.45rem 0.95rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg-raised);
  color: var(--text-dim);
  white-space: nowrap;
  flex-shrink: 0;
}
.pipe-stage.done { border-color: rgba(45, 212, 167, 0.4); color: var(--accent); }
.pipe-stage.running { border-color: var(--amber); color: var(--amber); }
.pipe-icon.spin { display: inline-block; animation: rotate 1.2s linear infinite; }
@keyframes rotate { to { transform: rotate(360deg); } }

.pipe-line {
  flex: 1;
  min-width: 24px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent) 60%, transparent 60%);
  background-size: 14px 2px;
  animation: flow 0.9s linear infinite;
}
.pipe-line.dashed { opacity: 0.35; animation: none; background: var(--border-bright); }
@keyframes flow { to { background-position: 14px 0; } }

/* ============================================================
   METRICS
   ============================================================ */
.metrics {
  border-block: 1px solid var(--border);
  background: var(--bg-raised);
  padding: clamp(1.8rem, 4vh, 2.8rem) 0;
}

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

.metric { text-align: center; }
.metric-value {
  display: block;
  font-family: var(--mono);
  font-size: clamp(1.5rem, 3.5vw, 2.2rem);
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.01em;
}
.metric-label {
  display: block;
  margin-top: 0.3rem;
  font-size: 0.82rem;
  color: var(--text-dim);
}

/* ============================================================
   SECTIONS
   ============================================================ */
.section { padding: clamp(4rem, 10vh, 6.5rem) 0; }

.section-title {
  font-family: var(--mono);
  font-size: clamp(1.5rem, 3.5vw, 2rem);
  font-weight: 700;
  margin-bottom: 0.4rem;
}
.title-hash { color: var(--accent); }

.section-sub {
  color: var(--text-dim);
  margin-bottom: 2.6rem;
}
.section-sub.mono::after {
  content: "";
  display: inline-block;
  width: 7px;
  height: 0.95em;
  background: var(--text-dim);
  margin-left: 4px;
  vertical-align: text-bottom;
  opacity: 0.6;
}

/* ============================================================
   ABOUT
   ============================================================ */
.about-grid {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
  margin-top: 2.5rem;
}

.photo-frame {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border-bright);
}
.photo-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(10, 14, 20, 0.55));
  pointer-events: none;
}
.photo-frame img {
  aspect-ratio: 4 / 5;
  object-fit: cover;
  filter: saturate(0.92);
  transition: transform 0.5s ease, filter 0.5s ease;
}
.photo-frame:hover img { transform: scale(1.03); filter: saturate(1); }

.about-copy p + p { margin-top: 1.1rem; }
.about-copy strong { color: var(--text); }
.about-copy { color: var(--text-dim); font-size: 1.02rem; }

.cert-card {
  display: flex;
  align-items: center;
  gap: 1.1rem;
  margin-top: 1.8rem;
  padding: 1rem 1.3rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
  max-width: 380px;
}
.cert-card img { width: 76px; height: auto; }
.cert-name { font-weight: 700; color: var(--text); }
.cert-level {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* ============================================================
   EXPERIENCE — timeline
   ============================================================ */
.timeline {
  position: relative;
  padding-left: 1.6rem;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--accent), var(--border));
}

.timeline-item {
  position: relative;
  padding-bottom: 2.2rem;
}
.timeline-item:last-child { padding-bottom: 0; }

.timeline-marker {
  position: absolute;
  left: -1.6rem;
  top: 8px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
}
.timeline-marker.edu { background: var(--bg); border: 2px solid var(--accent); box-shadow: none; }

.timeline-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 1.7rem;
  transition: border-color 0.25s, transform 0.25s;
}
.timeline-card:hover { border-color: var(--border-bright); transform: translateX(4px); }

.timeline-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.4rem;
}
.timeline-head h3 { font-size: 1.15rem; }
.timeline-date { color: var(--accent); font-size: 0.8rem; }

.timeline-org {
  font-family: var(--mono);
  color: var(--text-dim);
  font-size: 0.88rem;
  margin-top: 0.15rem;
}

.timeline-points {
  margin-top: 1rem;
  list-style: none;
  color: var(--text-dim);
  font-size: 0.95rem;
}
.timeline-points li {
  padding-left: 1.3rem;
  position: relative;
  margin-top: 0.55rem;
}
.timeline-points li::before {
  content: "▹";
  position: absolute;
  left: 0;
  color: var(--accent);
}

/* ============================================================
   PROJECTS
   ============================================================ */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.4rem;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.7rem;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}
.project-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent 70%);
  opacity: 0;
  transition: opacity 0.25s;
}
.project-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-bright);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.4);
}
.project-card:hover::before { opacity: 1; }

.project-card.featured {
  grid-column: span 2;
  background:
    radial-gradient(ellipse 60% 120% at 90% -20%, var(--accent-dim), transparent),
    var(--bg-card);
}

.project-card.wide {
  grid-column: span 2;
  flex-direction: row;
  gap: 1.7rem;
  padding: 0;
}
.project-card.wide .project-media {
  flex: 0 0 42%;
  overflow: hidden;
  border-right: 1px solid var(--border);
}
.project-card.wide .project-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: left top;
  transition: transform 0.5s ease;
}
.project-card.wide:hover .project-media img { transform: scale(1.04); }
.project-card.wide .project-body { padding: 1.7rem 1.7rem 1.7rem 0; display: flex; flex-direction: column; }

.project-top {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin-bottom: 0.9rem;
}
.project-icon {
  color: var(--accent);
  display: inline-flex;
  padding: 0.55rem;
  border-radius: 10px;
  background: var(--accent-dim);
  border: 1px solid rgba(45, 212, 167, 0.25);
}
.project-top h3 { font-size: 1.12rem; }

.project-desc {
  color: var(--text-dim);
  font-size: 0.95rem;
  flex: 1;
}
.project-desc strong { color: var(--accent); font-weight: 600; }

.project-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.2rem;
}
.project-tags li {
  font-size: 0.72rem;
  color: var(--text-dim);
  border: 1px solid var(--border);
  background: var(--bg-raised);
  padding: 0.22rem 0.6rem;
  border-radius: 999px;
}

/* ============================================================
   SKILLS
   ============================================================ */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.4rem;
}

.skill-group {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.6rem 1.7rem;
  transition: border-color 0.25s;
}
.skill-group:hover { border-color: var(--border-bright); }

.skill-group h3 {
  font-size: 1rem;
  margin-bottom: 1.1rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.skill-group-icon {
  color: var(--accent);
  font-family: var(--mono);
  font-size: 0.95rem;
}

.skill-chips {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}
.skill-chips li {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--text);
  background: var(--bg-raised);
  border: 1px solid var(--border);
  padding: 0.35rem 0.8rem;
  border-radius: 8px;
  transition: border-color 0.2s, color 0.2s, transform 0.2s;
}
.skill-chips li:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

/* ============================================================
   CONTACT
   ============================================================ */
.contact-card {
  text-align: center;
  border: 1px solid var(--border-bright);
  border-radius: 18px;
  padding: clamp(2.5rem, 7vw, 4.5rem) clamp(1.5rem, 5vw, 4rem);
  background:
    radial-gradient(ellipse 70% 120% at 50% -30%, var(--accent-dim), transparent),
    var(--bg-card);
}
.contact-prompt { color: var(--accent); margin-bottom: 1rem; }
.contact-card h2 {
  font-size: clamp(1.7rem, 4.5vw, 2.6rem);
  letter-spacing: -0.02em;
}
.contact-sub {
  color: var(--text-dim);
  max-width: 48ch;
  margin: 1rem auto 2.2rem;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  border-top: 1px solid var(--border);
  padding: 1.6rem 0;
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem;
  color: var(--text-dim);
  font-size: 0.85rem;
}

/* ============================================================
   REVEAL ANIMATIONS
   ============================================================ */
/* hidden only when JS is running, so content survives a JS failure */
.js .reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-terminal { max-width: 560px; }

  .about-grid { grid-template-columns: 1fr; }
  .about-photo { max-width: 320px; }

  .projects-grid { grid-template-columns: 1fr; }
  .project-card.featured,
  .project-card.wide { grid-column: span 1; }

  .project-card.wide { flex-direction: column; gap: 0; }
  .project-card.wide .project-media {
    border-right: none;
    border-bottom: 1px solid var(--border);
    max-height: 240px;
  }
  .project-card.wide .project-body { padding: 1.7rem; }

  .skills-grid { grid-template-columns: 1fr; }
  .metrics-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .nav-toggle { display: block; }

  /* backdrop-filter would trap the fixed fullscreen menu inside the 64px nav */
  .nav {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    background: rgba(10, 14, 20, 0.94);
  }

  .nav-links {
    position: fixed;
    inset: 0;
    background: rgba(10, 14, 20, 0.97);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    flex-direction: column;
    justify-content: center;
    gap: 2.2rem;
    font-size: 1.2rem;
    transform: translateX(100%);
    transition: transform 0.3s ease;
  }
  .nav-links.open { transform: translateX(0); }
  .nav-links a { font-size: 1.05rem; }

  .hero-actions .btn { flex: 1; justify-content: center; }

  .metrics-grid { gap: 1.2rem; }

  .timeline { padding-left: 1.35rem; }
  .timeline-card { padding: 1.2rem 1.3rem; }

  .footer-inner { justify-content: center; text-align: center; }
}