/* ─── Theme Variables ─── */
:root {
  --bg:         #F2EFDE;
  --bg-alt:     #EBE8D6;
  --bg-card:    #FFFFFF;
  --bg-nav:     rgba(242, 239, 222, 0.92);
  --text:       #1a1a1a;
  --text-muted: #555555;
  --accent:     #990000;
  --accent-dim: rgba(153, 0, 0, 0.12);
  --border:     rgba(0, 0, 0, 0.09);
  --shadow:     0 2px 14px rgba(0, 0, 0, 0.07);
  --shadow-lg:  0 4px 24px rgba(0, 0, 0, 0.10);
  --radius:     10px;
  --nav-h:      60px;
}

[data-theme="dark"] {
  --bg:         #141414;
  --bg-alt:     #1e1e1e;
  --bg-card:    #232323;
  --bg-nav:     rgba(20, 20, 20, 0.92);
  --text:       #f0ece0;
  --text-muted: #999999;
  --accent:     #cc2222;
  --accent-dim: rgba(204, 34, 34, 0.15);
  --border:     rgba(255, 255, 255, 0.08);
  --shadow:     0 2px 14px rgba(0, 0, 0, 0.3);
  --shadow-lg:  0 4px 24px rgba(0, 0, 0, 0.4);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  transition: background 0.25s, color 0.25s;
}

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

/* ─── Nav ─── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  background: var(--bg-nav);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
  gap: 1rem;
}

.nav-brand {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--accent);
  white-space: nowrap;
}

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

.nav-links a {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-muted);
  padding: 0.35rem 0.65rem;
  border-radius: 6px;
  transition: color 0.15s, background 0.15s;
}

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

.theme-toggle {
  background: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px;
  cursor: pointer;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
  flex-shrink: 0;
}

.theme-toggle:hover {
  background: var(--accent-dim);
  color: var(--accent);
  border-color: var(--accent);
}

.theme-toggle svg { width: 18px; height: 18px; }

/* Show correct icon per theme */
[data-theme="light"] .icon-moon { display: block; }
[data-theme="light"] .icon-sun  { display: none; }
[data-theme="dark"]  .icon-sun  { display: block; }
[data-theme="dark"]  .icon-moon { display: none; }

/* ─── Sections ─── */
.section {
  padding: 5rem 1.5rem;
}

.section-alt {
  background: var(--bg-alt);
  transition: background 0.25s;
}

.section-inner {
  max-width: 960px;
  margin: 0 auto;
}

.section-title {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 2rem;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  display: block;
  height: 3px;
  width: 48px;
  background: var(--accent);
  border-radius: 2px;
  margin-top: 6px;
}

/* ─── Hero ─── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(var(--nav-h) + 3rem) 1.5rem 4rem;
  background: var(--bg);
  transition: background 0.25s;
}

.hero-inner {
  max-width: 860px;
  width: 100%;
  display: flex;
  align-items: center;
  gap: 3.5rem;
}

.hero-photo {
  flex-shrink: 0;
  position: relative;
}

.hero-photo img {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--accent);
  box-shadow: var(--shadow-lg);
}

.photo-placeholder {
  display: none;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: var(--accent-dim);
  border: 4px solid var(--accent);
  color: var(--accent);
  font-size: 2.5rem;
  font-weight: 700;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  letter-spacing: 0.04em;
}

.hero-text { flex: 1; }

.hero-greeting {
  font-size: 1rem;
  color: var(--text-muted);
  font-weight: 400;
  margin-bottom: 0.25rem;
}

.hero-text h1 {
  font-size: clamp(2.4rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}

.tagline {
  font-size: clamp(1.1rem, 2.5vw, 1.35rem);
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 0.6rem;
}

.hero-sub {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 1.75rem;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  font-size: 0.92rem;
  padding: 0.7rem 1.4rem;
  border-radius: 8px;
  transition: background 0.15s, transform 0.1s, box-shadow 0.15s;
  box-shadow: 0 2px 8px rgba(153, 0, 0, 0.3);
}

.btn-primary:hover {
  background: #7a0000;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(153, 0, 0, 0.4);
}

/* ─── About ─── */
.about-text {
  font-size: 1.08rem;
  color: var(--text);
  max-width: 700px;
  line-height: 1.8;
}

/* ─── Skills ─── */
.chips-group {
  margin-bottom: 1.75rem;
}

.chips-label {
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.chip {
  background: var(--accent-dim);
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 500;
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  border: 1px solid rgba(153, 0, 0, 0.2);
  transition: background 0.15s, transform 0.1s;
}

[data-theme="dark"] .chip {
  border-color: rgba(204, 34, 34, 0.3);
}

.chip:hover {
  transform: translateY(-1px);
}

.chip-cert {
  background: var(--bg-card);
  color: var(--text);
  border: 1px solid var(--border);
}

.chip-cert:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ─── Experience Cards ─── */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  transition: box-shadow 0.2s, transform 0.2s, background 0.25s;
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 0.25rem;
}

.card-company {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
}

.card-role {
  font-size: 0.88rem;
  color: var(--accent);
  font-weight: 500;
  margin-top: 0.15rem;
}

.card-date {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 500;
  white-space: nowrap;
  flex-shrink: 0;
  padding-top: 0.15rem;
}

.card-location {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 0.85rem;
}

.card-bullets {
  padding-left: 1rem;
  list-style: disc;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.card-bullets li {
  font-size: 0.87rem;
  color: var(--text-muted);
  line-height: 1.55;
}

/* ─── Project Card ─── */
.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  display: grid;
  grid-template-columns: 320px 1fr;
  transition: background 0.25s;
}

.project-screenshot {
  background: var(--bg-alt);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.project-screenshot img {
  width: 100%;
  flex: 1;
  object-fit: cover;
  object-position: top;
}

.project-screenshot .ss-bottom {
  border-top: 1px solid var(--border);
}

.project-info {
  padding: 1.75rem;
}

.project-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.2rem;
}

.project-header h3 {
  font-size: 1.2rem;
  font-weight: 700;
}

.project-role {
  font-size: 0.85rem;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 0.75rem;
}

.project-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
  line-height: 1.6;
}

/* ─── Timeline (Other Experience) ─── */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-left: 2px solid var(--border);
  margin-left: 0.5rem;
}

.timeline-item {
  display: flex;
  gap: 1.25rem;
  padding: 0 0 2rem 1.5rem;
  position: relative;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: -7px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--bg);
  flex-shrink: 0;
}

.timeline-content { flex: 1; }

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 0.4rem;
  flex-wrap: wrap;
}

.timeline-header strong {
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--text);
}

.timeline-role {
  display: block;
  font-size: 0.82rem;
  color: var(--accent);
  font-weight: 500;
  margin-top: 0.1rem;
}

.timeline-desc {
  font-size: 0.86rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ─── Footer ─── */
.footer {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  padding: 2.5rem 1.5rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  transition: background 0.25s;
}

.linkedin-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-muted);
  padding: 0.5rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}

.linkedin-link:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-dim);
}

.footer-copy {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ─── Responsive ─── */
@media (max-width: 768px) {
  .nav-links { display: none; }

  .hero-inner {
    flex-direction: column;
    text-align: center;
    gap: 2rem;
  }

  .hero-photo img,
  .photo-placeholder { width: 150px; height: 150px; }

  .hero-cta { justify-content: center; display: flex; }

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

  .project-card { grid-template-columns: 1fr; }

  .project-screenshot {
    border-right: none;
    border-bottom: 1px solid var(--border);
    min-height: 180px;
  }

  .timeline-header { flex-direction: column; gap: 0.25rem; }

  .section { padding: 3.5rem 1.25rem; }
}

@media (max-width: 480px) {
  .nav { padding: 0 1rem; }
  .nav-brand { font-size: 0.95rem; }
  .section-title { font-size: 1.4rem; }
}