/* ============================================================================
   zeuldocs.com — Modern Adaptive Theme (follows system dark/light)
   ============================================================================ */

@import url('https://fonts.googleapis.com/css2?family=DM+Sans:opsz,wght@9..40,300;9..40,400;9..40,500;9..40,600&family=JetBrains+Mono:wght@400;500&display=swap');

/* ===== DARK MODE TOKENS (default) ===== */
:root {
  color-scheme: dark;
  --bg:         #080c14;
  --surface:    #111827;
  --surface-2:  #1a2332;
  --border:     #1e2d3d;
  --border-lt:  #263545;
  --text:       #e2e8f0;
  --text-dim:   #94a3b8;
  --text-faint: #64748b;
  --cyan:       #22d3ee;
  --teal:       #2dd4bf;
  --radius:     10px;
  --header-height: 47px;

  /* MkDocs Material variable overrides */
  --md-default-bg-color: var(--bg);
  --md-default-bg-color--light: var(--surface);
  --md-default-fg-color: var(--text);
  --md-default-fg-color--light: var(--text-dim);
  --md-default-fg-color--lighter: var(--text-faint);
  --md-default-fg-color--lightest: rgba(255,255,255,0.08);
  --md-accent-fg-color: var(--cyan);
  --md-typeset-a-color: var(--cyan);
}

/* ===== LIGHT MODE TOKENS (both media query and data attribute for full compat) ===== */
@media (prefers-color-scheme: light) {
  :root {
    color-scheme: light;
    --bg:         #f8fafc;
    --surface:    #ffffff;
    --surface-2:  #f1f5f9;
    --border:     #e2e8f0;
    --border-lt:  #cbd5e1;
    --text:       #0f172a;
    --text-dim:   #475569;
    --text-faint: #94a3b8;
    --cyan:       #0891b2;
    --teal:       #0d9488;

    --md-default-bg-color: var(--bg);
    --md-default-bg-color--light: var(--surface);
    --md-default-fg-color: var(--text);
    --md-default-fg-color--light: var(--text-dim);
    --md-default-fg-color--lighter: var(--text-faint);
    --md-default-fg-color--lightest: rgba(0,0,0,0.06);
    --md-accent-fg-color: var(--cyan);
    --md-typeset-a-color: var(--cyan);
  }
}

/* Also target by data attribute (set by Zensical/Material JS) */
[data-md-color-scheme="default"] {
  color-scheme: light;
  --bg:         #f8fafc;
  --surface:    #ffffff;
  --surface-2:  #f1f5f9;
  --border:     #e2e8f0;
  --border-lt:  #cbd5e1;
  --text:       #0f172a;
  --text-dim:   #475569;
  --text-faint: #94a3b8;
  --cyan:       #0891b2;
  --teal:       #0d9488;

  --md-default-bg-color: var(--bg);
  --md-default-bg-color--light: var(--surface);
  --md-default-fg-color: var(--text);
  --md-default-fg-color--light: var(--text-dim);
  --md-default-fg-color--lighter: var(--text-faint);
  --md-default-fg-color--lightest: rgba(0,0,0,0.06);
  --md-accent-fg-color: var(--cyan);
  --md-typeset-a-color: var(--cyan);
}

/* ===== BASE ===== */
*, *::before, *::after { box-sizing: border-box; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'DM Sans', -apple-system, sans-serif;
  line-height: 1.6;
}

/* ===== AMBIENT BACKGROUND ===== */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: -2;
}

body::after {
  content: "";
  position: fixed;
  width: 800px;
  height: 800px;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(34,211,238,0.05) 0%, transparent 70%);
  z-index: -1;
  pointer-events: none;
}

@media (prefers-color-scheme: light) {
  body::after {
    background: radial-gradient(circle, rgba(8,145,178,0.05) 0%, transparent 70%);
  }
}

/* ===== TYPOGRAPHY ===== */
.md-main .md-typeset,
.md-main .md-typeset h1,
.md-main .md-typeset h2,
.md-main .md-typeset h3,
.md-main .md-typeset p {
  color: var(--text);
  font-family: 'DM Sans', -apple-system, sans-serif;
}

.md-main .md-typeset a {
  color: var(--cyan);
}

/* ===== HEADER ===== */
.md-header,
.md-header-nav {
  background: rgba(8,12,20,0.85);
  box-shadow: none;
  color: var(--text);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(30,45,61,0.5);
  font-family: 'DM Sans', sans-serif;
}

@media (prefers-color-scheme: light) {
  .md-header, .md-header-nav {
    background: rgba(248,250,252,0.9);
    border-bottom-color: rgba(226,232,240,0.8);
  }
}
[data-md-color-scheme="default"] .md-header,
[data-md-color-scheme="default"] .md-header-nav {
  background: rgba(248,250,252,0.9);
  border-bottom-color: rgba(226,232,240,0.8);
}

.md-header {
  position: sticky;
  top: 0;
  z-index: 100;
}

.md-main__inner {
  margin-top: 0;
}

.md-header__inner {
  display: none;
}

@media screen and (max-width: 60em) {
  .md-header__inner { display: flex; }
  .homepage .md-header__inner { display: none; }
}

.md-header__button.md-logo img,
.md-header__button.md-logo {
  display: none;
}

/* ===== TABS NAV ===== */
.md-tabs {
  background: transparent;
  box-shadow: none;
  color: var(--text-dim);
  font-family: 'DM Sans', sans-serif;
  font-size: 14px;
  width: 100%;
  display: flex;
  visibility: visible;
  opacity: 1;
  overflow-x: auto;
  white-space: nowrap;
  border-bottom: 1px solid var(--border);
}

.md-tabs__link { color: var(--text-faint); transition: color 0.2s; }
.md-tabs__link--active, .md-tabs__link:hover { color: var(--text); }

/* ===== NAV SIDEBAR ===== */
.md-nav__link { color: var(--text-dim); }
.md-nav__link:hover, .md-nav__link:focus { color: var(--text); }
.md-nav__item--active > .md-nav__link { color: var(--cyan); }
.md-nav__title { color: var(--text-faint); }

.md-sidebar--primary {
  transition: none !important;
  top: var(--header-height, 47px) !important;
}

/* ===== FOOTER ===== */
.md-footer-nav, .md-footer__inner { background: transparent; }
.md-footer-meta { background: rgba(0,0,0,0.2); }

@media (prefers-color-scheme: light) {
  .md-footer-meta { background: rgba(0,0,0,0.05); }
}
[data-md-color-scheme="default"] .md-footer-meta { background: rgba(0,0,0,0.05); }

/* Light mode ambient glow */
[data-md-color-scheme="default"] body::after {
  background: radial-gradient(circle, rgba(8,145,178,0.05) 0%, transparent 70%);
}

/* ===== HERO ===== */
.home-hero__inner {
  text-align: center;
  width: 100%;
  max-width: 860px;
  margin: 0 auto;
  padding: 80px 28px 48px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.home-hero__inner h1 {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-family: 'DM Sans', sans-serif !important;
  font-weight: 600;
  letter-spacing: -1px;
  line-height: 1.15;
  margin-bottom: 12px;
  background: linear-gradient(160deg, #fff 30%, var(--cyan) 80%, var(--teal));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  width: 100%;
  display: block;
}

@media (prefers-color-scheme: light) {
  .home-hero__inner h1 {
    background: linear-gradient(160deg, #0f172a 30%, var(--cyan) 80%, var(--teal));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
  }
}
[data-md-color-scheme="default"] .home-hero__inner h1 {
  background: linear-gradient(160deg, #0f172a 30%, var(--cyan) 80%, var(--teal));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.home-hero__inner p {
  font-size: 1rem;
  color: var(--text-dim);
  letter-spacing: 0;
  margin: 0;
  line-height: 1.6;
}

/* ===== PROJECTS GRID ===== */
section {
  padding: 0 28px 48px;
  max-width: 1100px;
  margin: 0 auto;
}

.projects {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 28px 48px;
}

.project {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.project:hover {
  border-color: var(--border-lt);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.project img,
.project video {
  width: 100%;
  height: 180px;
  object-fit: cover;
  display: block;
}

.project .project-info {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 24px 14px 12px;
  background: linear-gradient(to top, rgba(0,0,0,0.75) 0%, rgba(0,0,0,0.35) 60%, transparent 100%);
}

.project h3 {
  font-size: 0.9rem;
  font-weight: 500;
  color: #fff !important;
  margin: 0 0 2px !important;
  display: block;
  font-family: 'DM Sans', sans-serif;
  text-shadow: 0 1px 3px rgba(0,0,0,0.4);
}

.project p {
  margin: 0 !important;
  font-size: 0.78rem;
  color: rgba(255,255,255,0.75) !important;
  font-family: 'DM Sans', sans-serif;
  line-height: 1.4;
  text-shadow: 0 1px 2px rgba(0,0,0,0.4);
}

/* PCB modules mini grid */
.project .pcb-modules-layout-mini {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: 1fr 1fr;
  gap: 3px;
  height: 150px;
  align-content: center;
  background: #0d1520;
  padding: 8px;
  overflow: hidden;
}

@media (prefers-color-scheme: light) {
  .project .pcb-modules-layout-mini { background: #e8eef5; }
}
[data-md-color-scheme="default"] .project .pcb-modules-layout-mini { background: #e8eef5; }

.project .pcb-modules-layout-mini .image-grid-item,
.project .pcb-modules-layout-mini .backplate-item {
  display: flex;
  align-items: center;
  justify-content: center;
}

.project .pcb-modules-layout-mini .backplate-item {
  grid-column: 4;
  grid-row: 1 / 3;
}

.project .pcb-modules-layout-mini img {
  width: 100%;
  height: 100%;
  max-height: 65px;
  object-fit: contain;
}

.project .pcb-modules-layout-mini .backplate-item img {
  max-height: 134px;
}

/* ===== EXPLORE BUTTON ===== */
.explore-more-container {
  text-align: center;
  margin: 0 0 48px;
}

/* ===== ABOUT SECTION ===== */
.about-section {
  padding: 0 28px 64px;
  max-width: 1100px;
  margin: 0 auto;
  text-align: center;
}

.portrait-image {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 20px;
  display: block;
  border: 1px solid var(--border-lt);
}

.footer-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 auto;
  padding: 0 28px;
  max-width: 1100px;
}

/* ===== BUTTONS ===== */
.btn,
a.btn,
.footer-actions a,
.explore-more-container a {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.82rem;
  font-weight: 500;
  text-decoration: none !important;
  color: var(--text-dim);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 18px;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
  background: transparent;
}

.btn:hover,
a.btn:hover,
.footer-actions a:hover,
.explore-more-container a:hover {
  color: var(--text);
  border-color: var(--border-lt);
  background: var(--surface);
  text-decoration: none !important;
}

/* ===== ANIMATIONS ===== */
.slide-in-bottom {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== LINK OVERRIDES ===== */
/* Remove Material's default underline on links in custom sections */
.md-typeset .project,
.md-typeset .btn,
.md-typeset a.btn,
.md-typeset .footer-actions a,
.md-typeset .explore-more-container a,
.md-typeset .blog-preview-card,
.md-typeset .test-card {
  text-decoration: none !important;
}

/* ===== HIDE AUTO-GENERATED ELEMENTS ===== */
.homepage .md-main .md-typeset > h1,
.homepage .md-main .md-typeset > .md-meta {
  display: none;
}

/* Hide palette toggle — theme follows system automatically */
form.md-header__option { display: none !important; }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .projects { grid-template-columns: repeat(2, 1fr); }
}

@media screen and (min-width: 60em) and (max-width: 76.234375em) {
  .md-sidebar--primary {
    display: block !important;
    left: 0 !important;
    transform: none !important;
    width: 12.1rem;
    position: sticky;
    top: var(--header-height, 47px);
    height: calc(100vh - var(--header-height, 47px));
    background: transparent !important;
    backdrop-filter: none !important;
    border-radius: 0 !important;
  }
  .homepage .md-sidebar--primary { display: none !important; }
  label[for="__drawer"] { display: none !important; }
  .md-container { display: flex; }
  .md-main { display: flex; }
  .md-nav--primary > .md-nav__title,
  .md-nav--primary > .md-nav__list > .md-nav__item--nested > .md-nav__link,
  .md-sidebar--primary .md-source { display: none !important; }
  .md-nav--primary > .md-nav__list > .md-nav__item:not(.md-nav__item--nested) { display: none !important; }
  .md-nav--primary > .md-nav__list > .md-nav__item--nested > .md-nav {
    display: block !important; opacity: 1 !important;
    overflow: visible !important; max-height: none !important;
  }
  .md-nav--primary > .md-nav__list > .md-nav__item--nested > .md-nav > .md-nav__title { display: none !important; }
  .md-nav--primary > .md-nav__list > .md-nav__item--nested > .md-nav > .md-nav__list { margin-left: 0 !important; }
  .md-nav--primary > .md-nav__source { display: none !important; }
  .md-overlay { display: none !important; }
}

@media screen and (max-width: 60em) {
  .md-tabs { display: none; }
  .homepage .md-tabs { display: flex; }
}

@media (max-width: 768px) {
  .projects { grid-template-columns: 1fr; padding: 0 16px 32px; }
  .home-hero__inner { padding: 48px 20px 32px; }
  .footer-actions { flex-direction: column; align-items: center; padding: 0 20px; }
  .footer-actions .btn { width: 100%; max-width: 280px; text-align: center; }
}