/* ============================================================
   Bitfeld — LIGHT-Theme
   Überschreibt das dunkle Default-Design (css/style.css)
   selektiv über [data-theme="light"] (Attribut am <html>).
   Wird NACH style.css und theme-dark.css geladen.

   Design-Ziel: heller, luftiger "gebrüstetes Glas"-Look —
   warmer Paper-Ton, zarte Schatten statt harter Borders,
   transluzente Flächen mit backdrop-filter, gedämpfte
   Bronze-/Petrol-Akzente, feinere Motion.
   ============================================================ */

/* ---------- Design-Tokens (helles Thema) ---------- */
[data-theme="light"] {
  color-scheme: light;

  /* Flächen: warmer Off-White-Ton statt reinem Weiß */
  --ink: #20242b;            /* Textfarbe AUF Akzentflächen */
  --ink-2: #2b3038;
  --surface: #eef0f3;        /* Seiten-Hintergrund: kühles Papiergrau */
  --surface-2: #e6e9ee;
  --page: #eef0f3;           /* tatsächlicher html-Hintergrund im Light-Theme */
  --paper: rgba(255, 255, 255, 0.1);   /* Kacheln: gebürstetes Glas */
  --paper-hi: #ffffff;

  /* Text: kontraststark auf hellem Grund (WCAG AA) */
  --text: #23272e;
  --text-muted: #5a6270;
  --text-faint: #5f6878;     /* ~5:1 auch auf Glasflächen */

  /* Borders fast unsichtbar — Tiefe kommt aus Schatten */
  --border: rgba(31, 38, 51, 0.09);
  --border-strong: rgba(31, 38, 51, 0.18);

  /* Heller Honig-Amber-Akzent (freundlicher, passt zum warmen Paper) */
  --accent: #a04a08;         /* Text, Linien, Icons (5.49:1 auf --surface) */
  --accent-deep: #8a5208;    /* dunkler, für Text/Hover (5.81:1) */
  --accent-soft: rgba(232, 163, 61, 0.09);
  --accent-fill: #e8a33d;    /* Füllflächen: dunkle Tinte 7.22:1 */
  --accent-hi: #d97706;      /* Hover, dunkle Tinte 4.89:1 */
  --accent-2: #0e7c74;       /* Petrol statt Neontürkis */
  --positive: #1f8a5b;

  /* Etwas kräftigere Borders für mehr Kontrast */
  --border: rgba(31, 38, 51, 0.13);
  --border-strong: rgba(31, 38, 51, 0.26);

  /* Weiche, farbige Schatten */
  --shadow-s: 0 1px 2px rgba(31, 38, 51, 0.05), 0 2px 8px -3px rgba(31, 38, 51, 0.07);
  --shadow-m: 0 2px 6px rgba(31, 38, 51, 0.05), 0 14px 40px -14px rgba(31, 38, 51, 0.14);
  --shadow-l: 0 4px 12px rgba(31, 38, 51, 0.06), 0 32px 72px -24px rgba(31, 38, 51, 0.2);

  /* Sanftere Motion */
  --dur-med: 260ms;
  --dur-slow: 520ms;
}

/* ---------- Base: Auswahl, Fokus, Scrollbalken ---------- */
[data-theme="light"] ::selection {
  background: rgba(232, 163, 61, 0.22);
  color: var(--ink);
}

[data-theme="light"] :focus-visible {
  outline: 2px solid var(--accent-deep);
  outline-offset: 3px;
}

[data-theme="light"] html,
html[data-theme="light"] {
  background: var(--page);
  scrollbar-width: thin;
  scrollbar-color: var(--border-strong) transparent;
}

[data-theme="light"] .reveal { transform: translateY(16px); }

/* ---------- Buttons ---------- */
[data-theme="light"] .btn-primary {
  --btn-bg: var(--accent-fill);
  --btn-fg: var(--ink);
  box-shadow: var(--shadow-s), 0 4px 16px -6px rgba(232, 163, 61, 0.25);
}
[data-theme="light"] .btn-primary:hover {
  --btn-bg: #d97706;
  transform: translateY(-1px);
  box-shadow: var(--shadow-m), 0 6px 20px -6px rgba(232, 163, 61, 0.3);
}
[data-theme="light"] .btn-outline {
  --btn-border: var(--border-strong);
  background: rgba(31, 38, 51, 0.03);
}
[data-theme="light"] .btn-outline:hover {
  --btn-border: var(--accent);
  --btn-fg: var(--accent);
  transform: translateY(-1px);
}
[data-theme="light"] .skip-link {
  background: var(--accent-fill);
  color: var(--ink);
}

/* ---------- Header: gebürstetes Glas ---------- */
[data-theme="light"] .site-header {
  background: rgba(238, 240, 243, 0.75);
  backdrop-filter: blur(16px) saturate(1.5);
  -webkit-backdrop-filter: blur(16px) saturate(1.5);
}
[data-theme="light"] .site-header.is-scrolled {
  border-bottom-color: rgba(31, 38, 51, 0.09);
  box-shadow: 0 10px 30px -22px rgba(31, 38, 51, 0.25);
}
[data-theme="light"] .nav-toggle {
  border-color: var(--border-strong);
}
[data-theme="light"] .nav-toggle span { background: var(--text); }

/* ---------- Featured-Section: dezente Washes ---------- */
[data-theme="light"] .featured {
  background: transparent;
}

[data-theme="light"] .eyebrow {
  color: var(--accent-deep);
  background: var(--accent-soft);
  border-color: rgba(232, 163, 61, 0.22);
}

/* ---------- Artwork-Flächen (Thumbs) ---------- */
[data-theme="light"] .thumb {
  background:
    radial-gradient(120% 120% at 20% 0%, rgba(232, 163, 61, 0.08), transparent 55%),
    linear-gradient(160deg, #ffffff, #e8ebf0);
  border-color: var(--border);
}
[data-theme="light"] .thumb::after { opacity: 0.08; }

[data-theme="light"] .thumb-rust {
  background:
    radial-gradient(120% 120% at 20% 0%, rgba(217, 159, 61, 0.2), transparent 55%),
    linear-gradient(160deg, #fdf6e9, #f6ead0);
}
[data-theme="light"] .thumb-db {
  background:
    radial-gradient(120% 120% at 20% 0%, rgba(14, 124, 116, 0.12), transparent 55%),
    linear-gradient(160deg, #eff9f7, #dcf0ec);
}
[data-theme="light"] .thumb-wasm {
  background:
    radial-gradient(120% 120% at 20% 0%, rgba(139, 146, 255, 0.15), transparent 55%),
    linear-gradient(160deg, #f5f5fd, #e7e7f6);
}
[data-theme="light"] .thumb-k8s {
  background:
    radial-gradient(120% 120% at 20% 0%, rgba(80, 160, 255, 0.12), transparent 55%),
    linear-gradient(160deg, #eef5fd, #dceafa);
}
[data-theme="light"] .thumb-ai {
  background:
    radial-gradient(120% 120% at 20% 0%, rgba(217, 159, 61, 0.16), transparent 55%),
    linear-gradient(160deg, #fdf5e8, #f7e8cd);
}
[data-theme="light"] .thumb-net {
  background:
    radial-gradient(120% 120% at 20% 0%, rgba(78, 201, 143, 0.13), transparent 55%),
    linear-gradient(160deg, #eff8f2, #daeee3);
}
[data-theme="light"] .thumb-mono {
  background:
    radial-gradient(120% 120% at 20% 0%, rgba(255, 138, 96, 0.14), transparent 55%),
    linear-gradient(160deg, #fdf1eb, #f8e2d6);
}
[data-theme="light"] .thumb-obs {
  background:
    radial-gradient(120% 120% at 20% 0%, rgba(14, 124, 116, 0.11), transparent 55%),
    linear-gradient(160deg, #eef8f8, #d9eeed);
}
[data-theme="light"] .thumb-ts {
  background:
    radial-gradient(120% 120% at 20% 0%, rgba(80, 140, 255, 0.13), transparent 55%),
    linear-gradient(160deg, #eef2fd, #dbe5f8);
}
[data-theme="light"] .thumb-sec {
  background:
    radial-gradient(120% 120% at 20% 0%, rgba(255, 110, 130, 0.13), transparent 55%),
    linear-gradient(160deg, #fdeef0, #f8dde1);
}

/* Kategorie-SVG-Linien: Bronze statt Neon */
[data-theme="light"] .cat-art { color: rgba(124, 81, 18, 0.55); }
[data-theme="light"] .stream-card:hover .cat-art,
[data-theme="light"] .mini-card:hover .cat-art {
  color: rgba(124, 81, 18, 0.95);
  transform: scale(1.03);
}
[data-theme="light"] .is-lead .cat-art { color: rgba(124, 81, 18, 0.7); }

/* ---------- Badge / Chip / Avatar ---------- */
[data-theme="light"] .badge-top {
  color: var(--ink);
  background: var(--accent-fill);
  box-shadow: 0 2px 12px -3px rgba(232, 163, 61, 0.35);
}
[data-theme="light"] .chip {
  color: var(--accent);
  background: var(--accent-soft);
  border-color: rgba(232, 163, 61, 0.2);
}
[data-theme="light"] .stream-card:hover .chip,
[data-theme="light"] .mini-card:hover .chip,
[data-theme="light"] .article-card:hover .chip,
[data-theme="light"] .feature-lead:hover .chip {
  background: rgba(232, 163, 61, 0.16);
}
[data-theme="light"] .avatar {
  color: var(--ink);
  background: var(--accent-fill);
}

/* ---------- Kacheln: Glas + zarte Schatten, feinere Lifts ---------- */
[data-theme="light"] .stream-card,
[data-theme="light"] .mini-card,
[data-theme="light"] .article-card,
[data-theme="light"] .news-card,
[data-theme="light"] .feature-lead,
[data-theme="light"] .feature-mini {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(31, 38, 51, 0.07);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: var(--shadow-s);
}
[data-theme="light"] .stream-card,
[data-theme="light"] .mini-card,
[data-theme="light"] .article-card,
[data-theme="light"] .news-card,
[data-theme="light"] .feature-lead {
  transition: transform 220ms var(--ease-out),
              border-color 220ms var(--ease-out),
              box-shadow 220ms var(--ease-out);
}
[data-theme="light"] .stream-card:hover,
[data-theme="light"] .article-card:hover,
[data-theme="light"] .feature-lead:hover {
  transform: translateY(-2px);
  border-color: rgba(31, 38, 51, 0.14);
  box-shadow: var(--shadow-m);
}
[data-theme="light"] .mini-card:hover {
  transform: translateY(-2px);
  border-color: rgba(31, 38, 51, 0.14);
  box-shadow: var(--shadow-m);
}
[data-theme="light"] .news-card:hover {
  transform: translateY(-2px);
  border-color: rgba(232, 163, 61, 0.35);
  box-shadow: var(--shadow-m);
}
[data-theme="light"] .feature-mini {
  transition: transform 220ms var(--ease-out),
              border-color 220ms var(--ease-out),
              background-color 220ms var(--ease-out);
}
[data-theme="light"] .feature-mini:hover {
  transform: translateY(-2px);
  border-color: rgba(31, 38, 51, 0.14);
  background: rgba(255, 255, 255, 0.15);
}

/* Trennlinien in/zwischen Kacheln */
[data-theme="light"] .thumb-lead-art,
[data-theme="light"] .thumb-card,
[data-theme="light"] .thumb-side { border-color: rgba(31, 38, 51, 0.07); }
[data-theme="light"] .mini-card .thumb-mini { border-color: rgba(31, 38, 51, 0.07); }

/* ---------- Section-Heads / Links ---------- */
[data-theme="light"] .section-kicker { color: var(--accent); }
[data-theme="light"] .link-arrow { color: var(--accent); }
[data-theme="light"] .link-arrow:hover { color: var(--accent-deep); }
[data-theme="light"] .section-sub a { text-decoration-color: var(--accent-deep); }

/* ---------- Dropdown-Navigation ---------- */
[data-theme="light"] .nav-dropdown-menu {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px) saturate(1.4);
  -webkit-backdrop-filter: blur(14px) saturate(1.4);
  border-color: rgba(31, 38, 51, 0.12);
  box-shadow: var(--shadow-m);
}
[data-theme="light"] .nav-cat:hover {
  background: rgba(31, 38, 51, 0.05);
}
[data-theme="light"] .nav-cat.is-active {
  color: var(--accent);
  background: var(--accent-soft);
}

/* ---------- Aktiver Filter ---------- */
[data-theme="light"] .active-filter-reset:hover { color: var(--accent); }

/* ---------- Modal ---------- */
[data-theme="light"] .article-modal-backdrop {
  background: rgba(52, 48, 42, 0.3);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
[data-theme="light"] .article-modal-panel {
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(14px) saturate(1.3);
  -webkit-backdrop-filter: blur(14px) saturate(1.3);
  border-color: rgba(31, 38, 51, 0.12);
  box-shadow: var(--shadow-l);
}
[data-theme="light"] .article-modal-close {
  background: rgba(31, 38, 51, 0.04);
  border-color: rgba(31, 38, 51, 0.1);
}
[data-theme="light"] .article-modal-close:hover {
  color: var(--accent);
  border-color: var(--accent);
}
[data-theme="light"] .modal-source-link { color: var(--accent); }
[data-theme="light"] .modal-source-link:hover { color: var(--accent-deep); }

/* ---------- Tages-Pagination ---------- */
[data-theme="light"] .pager-nav,
[data-theme="light"] .pager-page {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(31, 38, 51, 0.1);
  transition: color 160ms var(--ease-out),
              border-color 160ms var(--ease-out),
              background-color 160ms var(--ease-out);
}
[data-theme="light"] .pager-nav:hover:not(:disabled),
[data-theme="light"] .pager-page:hover {
  border-color: rgba(31, 38, 51, 0.2);
}
[data-theme="light"] .pager-page.is-active {
  color: var(--ink);
  background: var(--accent-fill);
  border-color: var(--accent-fill);
}

/* ---------- Newsletter-CTA ---------- */
[data-theme="light"] .cta {
  background: transparent;
}
[data-theme="light"] .cta-form input {
  color: var(--text);
  background: #ffffff;
  border: 1px solid rgba(31, 38, 51, 0.14);
}
[data-theme="light"] .cta-form input::placeholder { color: var(--text-faint); }
[data-theme="light"] .cta-form input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(232, 163, 61, 0.14);
}
[data-theme="light"] .cta-form input.is-invalid {
  border-color: #c0492f;
  box-shadow: 0 0 0 4px rgba(192, 73, 47, 0.16);
}
[data-theme="light"] .form-status.is-ok { color: var(--accent-2); }
[data-theme="light"] .form-status.is-error { color: #b3402a; }

/* ---------- Footer: halbtransparente Glasfläche ---------- */
[data-theme="light"] .site-footer {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-top-color: rgba(31, 38, 51, 0.08);
}
[data-theme="light"] .social-list a {
  border-color: rgba(31, 38, 51, 0.1);
}
[data-theme="light"] .social-list a:hover {
  color: var(--accent);
  border-color: var(--accent);
}
[data-theme="light"] .footer-col a:hover { color: var(--accent); }
[data-theme="light"] .footer-bottom { color: var(--text-muted); }
[data-theme="light"] .footer-status { color: var(--text-muted); }

/* ---------- Theme-Toggle (Sonne/Mond-Button) ---------- */
[data-theme="light"] .theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  min-height: 40px;
  padding: 0.45rem 0.95rem;
  font-size: var(--step--1);
  font-weight: 500;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(31, 38, 51, 0.1);
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: color 160ms var(--ease-out),
              border-color 160ms var(--ease-out),
              background-color 160ms var(--ease-out);
}
[data-theme="light"] .theme-toggle:hover {
  color: var(--text);
  border-color: rgba(31, 38, 51, 0.2);
  background: rgba(255, 255, 255, 0.95);
}
[data-theme="light"] .theme-toggle-icon {
  width: 16px;
  height: 16px;
  color: var(--accent);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  [data-theme="light"] .top-grid { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  [data-theme="light"] .main-nav {
    background: rgba(238, 240, 243, 0.97);
    backdrop-filter: blur(16px) saturate(1.4);
    -webkit-backdrop-filter: blur(16px) saturate(1.4);
    border-bottom-color: rgba(31, 38, 51, 0.09);
    box-shadow: var(--shadow-m);
  }
  [data-theme="light"] .nav-list li { border-bottom-color: rgba(31, 38, 51, 0.08); }
  [data-theme="light"] .mini-card .thumb-mini { border-color: rgba(31, 38, 51, 0.07); }
}