/* ═══════════════════════════════════════════════════════
   style.css — delavega.ai
   ═══════════════════════════════════════════════════════ */

/* ── 0. THEME TOKENS ─────────────────────────────────── */

:root, [data-theme="light"] {
  --bg:        #f4f6fb;
  --bg-alt:    #eaecf4;
  --bg-card:   #ffffff;
  --border:    #d0d8e8;
  --text:      #0f1a28;
  --text-2:    #3a5068;
  --text-3:    #7888a0;
  --accent:    #1a4a78;
  --accent-2:  #2a6aaa;
  --ice:       #5ab4e0;
}

[data-theme="dark"] {
  --bg:        #0e1926;
  --bg-alt:    #0b1420;
  --bg-card:   #111e2c;
  --border:    #162232;
  --text:      #d4e0ec;
  --text-2:    #7a9cb8;
  --text-3:    #6a8ea8;
  --accent:    #5ab4e0;
  --accent-2:  #7acce8;
  --ice:       #5ab4e0;
}


/* ── 1. RESET / BASE ─────────────────────────────────── */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--bg);
}

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: 'Lexend', sans-serif;
  font-weight: 300;
  line-height: 1.6;
  transition: none;
}

a {
  color: var(--accent-2);
  text-decoration: none;
}
a:hover {
  color: var(--accent);
  text-decoration: underline;
}

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

ul, ol {
  padding-left: 1.5rem;
}

hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2.5rem 0;
}

strong {
  font-weight: 400;
}

code, pre {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85em;
  background: var(--bg-alt);
  border: 1px solid var(--border);
}

code {
  padding: 0.15em 0.4em;
  border-radius: 2px;
}

pre {
  padding: 1rem 1.25rem;
  overflow-x: auto;
  line-height: 1.6;
  margin: 1.5rem 0;
}

pre code {
  background: none;
  border: none;
  padding: 0;
}

sub, sup {
  font-size: 0.75em;
}


/* ── 2. TYPOGRAPHY SCALE ─────────────────────────────── */

h1, h2, h3, h4 {
  font-family: 'Lexend', sans-serif;
  font-weight: 300;
  line-height: 1.2;
  color: var(--text);
  letter-spacing: -0.02em;
}

h1 { font-size: 2.2rem;  margin-bottom: 1rem; }
h2 { font-size: 1.4rem;  margin-bottom: 0.75rem; }
h3 { font-size: 1.1rem;  margin-bottom: 0.5rem; }
h4 { font-size: 0.95rem; margin-bottom: 0.4rem; }

p  { margin-bottom: 1rem; color: var(--text-2); }

.mono-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ice);
  display: block;
  margin-bottom: 0.6rem;
}

:root .mono-tag,
[data-theme="light"] .mono-tag {
  color: var(--accent-2);
}

.subtitle {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  color: var(--text-3);
  letter-spacing: 0.1em;
}


/* ── 3. LAYOUT ───────────────────────────────────────── */

.container {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.container--wide {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.page-section {
  padding: 3rem 0;
  border-bottom: 1px solid var(--border);
}

.page-section:last-of-type {
  border-bottom: none;
}

.page-header {
  padding: 2.5rem 0 1.5rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2.5rem;
}

.page-header .mono-tag {
  margin-bottom: 0.5rem;
}

.page-header h1 {
  margin-bottom: 0;
}


/* ── 4. NAVIGATION ───────────────────────────────────── */

.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  height: 52px;
  display: flex;
  align-items: center;
  padding: 0 1.5rem;
  transition: background-color 0.2s ease;
}

.nav-logo {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--accent);
  letter-spacing: 0.04em;
  text-decoration: none;
  flex-shrink: 0;
}
.nav-logo:hover {
  color: var(--accent-2);
  text-decoration: none;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  margin-left: auto;
  list-style: none;
  padding: 0;
}

.nav-links a {
  font-family: 'Lexend', sans-serif;
  font-size: 0.65rem;
  font-weight: 300;
  color: var(--text-2);
  text-decoration: none;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: color 0.15s ease;
}

.nav-links a:hover,
.nav-links a.nav-active {
  color: var(--accent);
  text-decoration: none;
}

.theme-toggle {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6rem;
  color: var(--text-3);
  border: 1px solid var(--border);
  padding: 0.22rem 0.6rem;
  border-radius: 2px;
  cursor: pointer;
  background: transparent;
  letter-spacing: 0.06em;
  margin-left: 2rem;
  transition: color 0.15s ease, border-color 0.15s ease;
  flex-shrink: 0;
}
.theme-toggle:hover {
  color: var(--text-2);
  border-color: var(--text-3);
}

/* Hamburger button (mobile only) */
.nav-hamburger {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 1.1rem;
  color: var(--text-2);
  margin-left: auto;
  padding: 0.25rem 0.4rem;
  line-height: 1;
}

/* Mobile dropdown */
@media (max-width: 600px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 52px;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    margin: 0;
    padding: 0.5rem 0;
    box-shadow: 0 4px 16px rgba(0,0,0,0.12);
  }

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

  .nav-links a {
    display: block;
    padding: 0.7rem 1.5rem;
    font-size: 0.7rem;
  }

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

  .nav-hamburger {
    display: block;
  }

  .theme-toggle {
    margin-left: 0.75rem;
  }
}


/* ── 5. HERO ─────────────────────────────────────────── */

.hero {
  padding: 4rem 0 3.5rem;
  border-bottom: 1px solid var(--border);
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.hero-name {
  font-family: 'Lexend', sans-serif;
  font-size: 1.0rem;
  font-weight: 200;
  color: var(--text-3);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.4rem;
  display: block;
}

.hero h1 {
  font-size: 2.6rem;
  font-weight: 300;
  margin-bottom: 1rem;
  letter-spacing: -0.03em;
}

.hero h1 em {
  font-style: normal;
  color: var(--accent-2);
}

.hero-body {
  font-size: 0.95rem;
  color: var(--text-2);
  line-height: 1.75;
  margin-bottom: 1.75rem;
  max-width: 38ch;
}

.hero-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.hero-stats {
  padding-left: 2.5rem;
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.stat-item {
  padding: 0.9rem 0;
}

.stat-item + .stat-item {
  border-top: 1px solid var(--border);
}

.stat-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--accent);
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: 0.3rem;
}

.stat-label {
  font-family: 'Lexend', sans-serif;
  font-size: 0.9rem;
  font-weight: 300;
  color: var(--text-3);
  letter-spacing: 0.04em;
}

@media (max-width: 900px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .hero-stats {
    padding-left: 0;
    border-left: none;
    border-top: 1px solid var(--border);
    padding-top: 1.5rem;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0;
  }
  .stat-item {
    flex: 1;
    min-width: 120px;
    padding: 0.75rem 1rem 0.75rem 0;
    border-top: none;
    border-right: 1px solid var(--border);
  }
  .stat-item:last-child {
    border-right: none;
  }
  .hero h1 {
    font-size: 2rem;
  }
}

@media (max-width: 600px) {
  .hero {
    padding: 2.5rem 0 2rem;
  }
  .hero h1 {
    font-size: 1.7rem;
  }
  .hero-stats {
    flex-direction: column;
  }
  .stat-item {
    border-right: none;
    border-top: 1px solid var(--border);
  }
  .stat-item:first-child {
    border-top: none;
  }
}


/* ── 6. BUTTONS ──────────────────────────────────────── */

.btn-primary {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--bg);
  background: var(--accent);
  border: 1px solid var(--accent);
  padding: 0.6rem 1.2rem;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  transition: background-color 0.15s ease, border-color 0.15s ease;
}
.btn-primary:hover {
  background: var(--accent-2);
  border-color: var(--accent-2);
  color: var(--bg);
  text-decoration: none;
}

.btn-secondary {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid var(--border);
  padding: 0.6rem 1.2rem;
  cursor: pointer;
  background: transparent;
  text-decoration: none;
  display: inline-block;
  transition: border-color 0.15s ease, color 0.15s ease;
}
.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent-2);
  text-decoration: none;
}

.btn-cv {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid var(--border);
  padding: 0.6rem 1.4rem;
  cursor: pointer;
  background: transparent;
  text-decoration: none;
  display: inline-block;
  transition: background-color 0.15s ease, border-color 0.15s ease;
}
.btn-cv:hover {
  background: var(--bg-alt);
  border-color: var(--accent);
  text-decoration: none;
}


/* ── 7. SECTION CARDS (homepage) ─────────────────────── */

.section-cards {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border);
  margin: 2rem 0;
}

.section-card {
  background: var(--bg-card);
  padding: 1.75rem 1.75rem;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background-color 0.15s ease;
  text-decoration: none;
  display: block;
}

.section-card:last-child {
  border-bottom: none;
}

.section-card:hover {
  background: var(--bg-alt);
  text-decoration: none;
}

.section-card .mono-tag {
  margin-bottom: 0.7rem;
}

.section-card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.6rem;
  color: var(--text);
}

.section-card p {
  font-size: 0.78rem;
  color: var(--text-3);
  line-height: 1.6;
  margin-bottom: 1rem;
}

.card-link {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6rem;
  color: var(--accent-2);
  letter-spacing: 0.08em;
}


/* ── 8. LATEST POST STRIP ────────────────────────────── */

.post-strip {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 1.5rem;
  align-items: center;
  padding: 1.2rem 1.5rem;
  border: 1px solid var(--border);
  margin-bottom: 2rem;
  background: var(--bg);
}

.post-strip-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.55rem;
  color: var(--text-3);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  white-space: nowrap;
}

.post-strip-content {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  min-width: 0;
}

.post-strip-title {
  font-family: 'Lexend', sans-serif;
  font-size: 1rem;
  font-weight: 300;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  text-decoration: none;
  transition: color 0.15s ease;
}
.post-strip-title:hover {
  color: var(--accent-2);
  text-decoration: none;
}

.post-strip-meta {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.52rem;
  color: var(--text-3);
  letter-spacing: 0.06em;
}

.post-strip-link {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.58rem;
  color: var(--accent);
  letter-spacing: 0.08em;
  white-space: nowrap;
  text-decoration: none;
  transition: color 0.15s ease;
}
.post-strip-link:hover {
  color: var(--accent-2);
  text-decoration: none;
}

@media (max-width: 600px) {
  .post-strip {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }
  .post-strip-label {
    display: none;
  }
}


/* ── 9. BLOG INDEX ───────────────────────────────────── */

.blog-list {
  list-style: none;
  padding: 0;
}

.blog-entry {
  display: grid;
  grid-template-columns: 7rem 1fr auto;
  gap: 1.5rem;
  align-items: baseline;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--border);
}

.blog-entry:first-child {
  border-top: 1px solid var(--border);
}

.blog-entry-date {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.62rem;
  color: var(--text-3);
  letter-spacing: 0.05em;
  flex-shrink: 0;
}

.blog-entry-title {
  font-family: 'Lexend', sans-serif;
  font-size: 0.9rem;
  font-weight: 300;
  color: var(--text);
  text-decoration: none;
  transition: color 0.15s ease;
}
.blog-entry-title:hover {
  color: var(--accent-2);
  text-decoration: none;
}

.blog-entry-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.55rem;
  color: var(--ice);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  flex-shrink: 0;
}

@media (max-width: 600px) {
  .blog-entry {
    grid-template-columns: 1fr;
    gap: 0.3rem;
  }
}


/* ── 10. BLOG POST ───────────────────────────────────── */

.post-header {
  padding: 2.5rem 0 2rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2.5rem;
}

.post-header .mono-tag {
  margin-bottom: 0.4rem;
}

.post-date {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.62rem;
  color: var(--text-3);
  letter-spacing: 0.08em;
  margin-bottom: 0.8rem;
  display: block;
}

.post-header h1 {
  font-size: 2rem;
  margin-bottom: 0;
}

.post-body {
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--text-2);
}

.post-body h3 {
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
  color: var(--text);
  font-size: 1.1rem;
}

.post-body p {
  margin-bottom: 1.1rem;
}

.post-body ul,
.post-body ol {
  margin-bottom: 1rem;
  color: var(--text-2);
}

.post-body li {
  margin-bottom: 0.35rem;
}

.post-body img {
  margin: 1.5rem 0;
  border: 1px solid var(--border);
}

.post-body figcaption,
.post-body img + em {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6rem;
  color: var(--text-3);
  margin-top: 0.4rem;
  display: block;
}

.post-nav {
  padding: 1.5rem 0;
  border-top: 1px solid var(--border);
  margin-top: 3rem;
}

.post-nav a {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  color: var(--accent);
  letter-spacing: 0.08em;
  text-decoration: none;
  transition: color 0.15s ease;
}
.post-nav a:hover {
  color: var(--accent-2);
}


/* ── 11. PUBLICATIONS ────────────────────────────────── */

.pub-section {
  margin-bottom: 2.5rem;
}

.pub-section h2 {
  font-size: 0.75rem;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ice);
  margin-bottom: 1.25rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--border);
}

.pub-list {
  list-style: none;
  padding: 0;
}

.pub-entry {
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--text-2);
  line-height: 1.65;
}

.pub-entry:last-child {
  border-bottom: none;
}

.pub-entry strong {
  color: var(--text);
}

.pub-entry a {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.62rem;
  color: var(--accent-2);
  letter-spacing: 0.04em;
  margin-left: 0.4rem;
}


/* ── 12. ABOUT PAGE ──────────────────────────────────── */

.about-section {
  padding: 2.5rem 0;
  border-bottom: 1px solid var(--border);
}

.about-section:last-child {
  border-bottom: none;
}

.about-section h2 {
  font-size: 0.75rem;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ice);
  margin-bottom: 1.5rem;
}

.portrait {
  float: right;
  margin: 0 0 1.5rem 2rem;
  width: 160px;
  border: 1px solid var(--border);
}

.social-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
  list-style: none;
  padding: 0;
}

.social-links a {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  color: var(--accent);
  border: 1px solid var(--border);
  padding: 0.3rem 0.7rem;
  text-decoration: none;
  transition: border-color 0.15s ease, color 0.15s ease;
}
.social-links a:hover {
  border-color: var(--accent);
  color: var(--accent-2);
  text-decoration: none;
}

.about-section ul {
  color: var(--text-2);
  font-size: 0.9rem;
  line-height: 1.75;
}

.about-section li {
  margin-bottom: 0.4rem;
}

@media (max-width: 600px) {
  .portrait {
    float: none;
    margin: 0 0 1.5rem 0;
    width: 120px;
  }
}


/* ── 13. SERVICES PAGE ───────────────────────────────── */

.service-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.service-card {
  padding: 1.75rem 0;
  border-bottom: 1px solid var(--border);
}

.service-card:first-child {
  border-top: 1px solid var(--border);
}

.service-card .mono-tag {
  margin-bottom: 0.4rem;
}

.service-card h3 {
  font-size: 1.05rem;
  color: var(--text);
  margin-bottom: 0.6rem;
}

.service-card p {
  font-size: 0.88rem;
  color: var(--text-2);
  line-height: 1.7;
  max-width: 64ch;
  margin-bottom: 0;
}

.cta-strip {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  padding: 2rem 2rem;
  margin-top: 3rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.cta-strip h3 {
  font-size: 1rem;
  color: var(--text);
  margin-bottom: 0.3rem;
}

.cta-strip p {
  font-size: 0.8rem;
  color: var(--text-2);
  margin: 0;
}

@media (max-width: 600px) {
  .cta-strip {
    flex-direction: column;
    align-items: flex-start;
  }
}


/* ── 14. FOOTER ──────────────────────────────────────── */

.site-footer {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  padding: 1.25rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.footer-logo {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  color: var(--text-3);
  letter-spacing: 0.06em;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  list-style: none;
  padding: 0;
}

.footer-links a {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.58rem;
  color: var(--text-3);
  letter-spacing: 0.08em;
  text-decoration: none;
  transition: color 0.15s ease;
}
.footer-links a:hover {
  color: var(--accent);
  text-decoration: none;
}


/* ── 15. ANIMATIONS ──────────────────────────────────── */

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.anim-1 { animation: fadeUp 0.4s ease-out 0ms   both; }
.anim-2 { animation: fadeUp 0.4s ease-out 80ms  both; }
.anim-3 { animation: fadeUp 0.4s ease-out 160ms both; }
.anim-4 { animation: fadeUp 0.4s ease-out 240ms both; }
.anim-5 { animation: fadeUp 0.4s ease-out 320ms both; }

@media (prefers-reduced-motion: reduce) {
  .anim-1, .anim-2, .anim-3, .anim-4, .anim-5 {
    animation: none;
  }
  .btn-primary, .btn-secondary, .btn-cv,
  .section-card, .theme-toggle,
  .nav-links a, .post-strip-link,
  .blog-entry-title, .social-links a,
  body {
    transition: none !important;
  }
}