/* ======================================================
   THE MODERN ENGINEER — Dashboard Portfolio Theme
   Light mode · Card UI · Code-integrated aesthetic
   ====================================================== */

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

:root {
  /* Surface palette */
  --bg:          #f2f3f5;
  --surface:     #ffffff;
  --surface-alt: #f8f9fb;

  /* Text palette */
  --ink:         #111318;
  --ink-2:       #3d4250;
  --ink-3:       #6b7084;
  --ink-4:       #9da2b0;

  /* Accent */
  --accent:      #2563eb;
  --accent-soft: #eef2ff;
  --accent-glow: rgba(37, 99, 235, 0.08);

  /* Borders */
  --border:      #dfe1e6;
  --border-soft: #eceef2;

  /* Layout */
  --max-w:   880px;
  --radius:  10px;
  --radius-sm: 6px;

  /* Type */
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: "JetBrains Mono", "Fira Code", "SF Mono", "Cascadia Code", Consolas, monospace;
}

html { scroll-behavior: smooth; scroll-padding-top: 68px; }

body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: var(--accent); text-decoration: none; transition: color .15s; }
a:hover { color: #1d4ed8; }

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

/* ── Navbar ── */
.navbar {
  position: sticky;
  top: 0;
  z-index: 200;
  background: rgba(242, 243, 245, .82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}

.navbar-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 32px;
}

.navbar-logo {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 0.88rem;
  color: var(--ink);
  letter-spacing: 0.04em;
}

.navbar-logo .sym { color: var(--accent); }

.navbar-links {
  display: flex;
  gap: 26px;
  list-style: none;
}

.navbar-links a {
  color: var(--ink-3);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-decoration: none;
  transition: color .15s;
}

.navbar-links a:hover { color: var(--ink); }

/* ── Layout helpers ── */
.wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 32px;
}

.section {
  padding: 80px 0;
}

/* Section header with thin rule */
.sec-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 44px;
}

.sec-label {
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent);
  white-space: nowrap;
}

.sec-rule {
  flex: 1;
  height: 1px;
  background: var(--border);
  border: none;
}

/* ── HEADER / HERO ── */
.hero {
  padding: 72px 0 0;
  text-align: center;
}

.hero-photo {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--border);
  margin-bottom: 24px;
  filter: grayscale(8%);
}

.hero h1 {
  font-size: 2.4rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.1;
  margin-bottom: 8px;
}

.hero-tagline {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--accent);
  margin-bottom: 24px;
}

/* 3-column quick-links grid */
.quick-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  max-width: 580px;
  margin: 0 auto 28px;
}

.quick-cell {
  background: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-size: 0.82rem;
  color: var(--ink-2);
  display: flex;
  align-items: center;
  gap: 8px;
}

.quick-cell .qsym {
  color: var(--ink-4);
  font-size: 0.9rem;
  flex-shrink: 0;
}

.quick-cell a { color: var(--ink-2); }
.quick-cell a:hover { color: var(--accent); }

/* CTA row */
.hero-cta {
  display: flex;
  justify-content: center;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 24px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: background .2s, border-color .2s, transform .15s;
  cursor: pointer;
}

.btn-primary {
  background: var(--ink);
  color: #fff;
  border: 1.5px solid var(--ink);
}
.btn-primary:hover {
  background: #2d3039;
  color: #fff;
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1.5px solid var(--border);
}
.btn-ghost:hover {
  border-color: var(--ink);
  transform: translateY(-1px);
}

/* ── MANIFESTO (About) ── */
.manifesto-quote {
  border-left: 3px solid var(--accent);
  padding: 20px 24px;
  background: var(--accent-soft);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-bottom: 32px;
}

.manifesto-quote p {
  font-size: 1.02rem;
  font-style: italic;
  color: var(--ink-2);
  line-height: 1.75;
}

.manifesto-body {
  font-size: 0.92rem;
  color: var(--ink-2);
  line-height: 1.85;
  max-width: 680px;
}

.manifesto-body strong {
  color: var(--ink);
  font-weight: 700;
}

/* Stats strip */
.stats-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-top: 36px;
}

.stat-cell {
  background: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  padding: 18px 12px;
  text-align: center;
}

.stat-num {
  font-family: var(--mono);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--ink);
  letter-spacing: -0.03em;
  line-height: 1.2;
}

.stat-lbl {
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-4);
  margin-top: 4px;
}

/* ── EDUCATION ── */
.edu-card {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  padding: 24px 28px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.edu-card + .edu-card {
  margin-top: 16px;
}

.edu-icon {
  font-size: 1.3rem;
  line-height: 1;
  padding-top: 2px;
  flex-shrink: 0;
}

.edu-body { flex: 1; }

.edu-top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 2px;
}

.edu-school {
  font-weight: 700;
  font-size: 0.96rem;
}

.edu-date {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid #dbe3ff;
  padding: 4px 8px;
  border-radius: 999px;
  font-weight: 700;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.edu-degree {
  font-size: 0.88rem;
  color: var(--ink-2);
  margin-bottom: 2px;
}

.edu-meta {
  font-family: var(--mono);
  font-size: 0.76rem;
  color: var(--ink-4);
  margin-bottom: 12px;
}

.edu-focus-label {
  font-family: var(--mono);
  font-size: 0.66rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 4px;
}

.edu-focus {
  font-size: 0.84rem;
  color: var(--ink-3);
  line-height: 1.6;
}

/* ── TECH STACK (Table / Grid) ── */
.stack-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
}

.stack-table th,
.stack-table td {
  text-align: left;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-soft);
}

.stack-table tr:last-child th,
.stack-table tr:last-child td {
  border-bottom: none;
}

.stack-table th {
  width: 180px;
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  background: var(--surface-alt);
  vertical-align: top;
  white-space: nowrap;
}

.stack-table td { vertical-align: top; }

.stack-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.pill {
  font-family: var(--mono);
  font-size: 0.76rem;
  font-weight: 500;
  background: var(--bg);
  border: 1px solid var(--border-soft);
  padding: 4px 11px;
  border-radius: 4px;
  color: var(--ink-2);
  white-space: nowrap;
}

/* ── EXPERIENCE ARCHIVE (Log-style) ── */
.log-entry {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  margin-bottom: 40px;
}

.log-entry:last-child { margin-bottom: 0; }

.log-stamp {
  flex-shrink: 0;
  width: 130px;
  padding-top: 2px;
}

.log-date {
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--ink-4);
  white-space: nowrap;
}

.log-dot {
  display: block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  margin-top: 8px;
}

.log-body {
  flex: 1;
  border-left: 1px solid var(--border);
  padding-left: 24px;
}

.log-title {
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 1px;
}

.log-org {
  font-size: 0.86rem;
  color: var(--ink-2);
  margin-bottom: 2px;
}

.log-scope {
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--ink-4);
  margin-bottom: 14px;
}

.log-body ul {
  padding-left: 16px;
  color: var(--ink-2);
  font-size: 0.88rem;
  line-height: 1.75;
}

.log-body ul li { margin-bottom: 7px; }
.log-body ul li::marker { color: var(--border); }

.log-body ul li strong {
  color: var(--ink);
  font-weight: 700;
}

.log-body ul li em {
  color: var(--accent);
  font-style: normal;
  font-weight: 600;
}

/* ── PROJECT SHOWCASE ── */
.proj-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 32px;
  margin-bottom: 20px;
  transition: border-color .2s, box-shadow .2s;
}

.proj-card:hover {
  border-color: #c7d2fe;
  box-shadow: 0 4px 20px var(--accent-glow);
}

.proj-card:last-child { margin-bottom: 0; }

.proj-top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}

.proj-name {
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: -0.01em;
}

.proj-date {
  font-family: var(--mono);
  font-size: 0.76rem;
  color: var(--ink-4);
  white-space: nowrap;
}

/* Stack line */
.proj-stack {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--ink-3);
  margin-bottom: 14px;
  padding: 8px 14px;
  background: var(--surface-alt);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--accent);
}

.proj-stack strong {
  color: var(--accent);
  font-weight: 700;
}

.proj-desc {
  font-size: 0.88rem;
  color: var(--ink-2);
  line-height: 1.7;
  margin-bottom: 14px;
}

.proj-desc strong {
  color: var(--ink);
  font-weight: 700;
}

/* Key Engineering Win */
.proj-win {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 14px 16px;
  background: var(--accent-soft);
  border-radius: var(--radius-sm);
}

.proj-win-icon {
  flex-shrink: 0;
  font-size: 0.95rem;
  padding-top: 1px;
}

.proj-win-body {
  font-size: 0.88rem;
  color: var(--ink-2);
  line-height: 1.65;
}

.proj-win-label {
  font-family: var(--mono);
  font-size: 0.66rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 2px;
}

.proj-win-body strong {
  color: var(--ink);
  font-weight: 700;
}

.proj-win-body em {
  color: var(--accent);
  font-style: normal;
  font-weight: 600;
}

/* ── PUBLICATION ── */
.pub-block {
  border-left: 3px solid var(--border);
  padding: 16px 20px;
  background: var(--surface-alt);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.pub-block p {
  font-size: 0.88rem;
  color: var(--ink-2);
  line-height: 1.7;
}

.pub-block em {
  color: var(--ink);
  font-style: italic;
}

.pub-issn {
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--ink-4);
  margin-top: 6px;
}

/* ── FOOTER ── */
footer {
  text-align: center;
  padding: 48px 32px 56px;
  color: var(--ink-4);
  font-size: 0.8rem;
  border-top: 1px solid var(--border);
}

.footer-bar {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  margin-bottom: 6px;
  color: var(--ink-4);
}

footer a { color: var(--ink-4); }
footer a:hover { color: var(--accent); }

/* ── Responsive ── */
@media (max-width: 640px) {
  .navbar-links { gap: 14px; }
  .navbar-links a { font-size: 0.76rem; }

  .hero { padding: 48px 0 0; }
  .hero h1 { font-size: 1.8rem; }

  .quick-grid {
    grid-template-columns: 1fr;
    max-width: 100%;
  }

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

  .edu-card {
    flex-direction: column;
    gap: 8px;
    padding: 20px;
  }

  .stack-table th {
    width: auto;
    display: block;
    border-bottom: none;
    padding-bottom: 4px;
  }

  .stack-table td {
    display: block;
    padding-top: 0;
  }

  .log-entry {
    flex-direction: column;
    gap: 4px;
  }

  .log-stamp { width: auto; }
  .log-dot { display: none; }

  .log-body {
    border-left: none;
    padding-left: 0;
    border-top: 1px solid var(--border-soft);
    padding-top: 12px;
  }

  .proj-top { flex-direction: column; gap: 2px; }
  .edu-top { flex-direction: column; gap: 2px; }

  .section { padding: 56px 0; }
  .wrap { padding: 0 20px; }
}