/* =========================================================================
   Sabine Mbaye — Buchwebseite
   Editorial author site. Warm cream surfaces, deep teal + warm gold accents.
   Display: Zodiak (serif) · Body: Switzer (sans) — Fontshare
   ========================================================================= */

/* ---- Type scale ---------------------------------------------------------- */
:root {
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 5rem);

  /* Spacing (4px base) */
  --space-1: 0.25rem;  --space-2: 0.5rem;   --space-3: 0.75rem;
  --space-4: 1rem;     --space-5: 1.25rem;  --space-6: 1.5rem;
  --space-8: 2rem;     --space-10: 2.5rem;  --space-12: 3rem;
  --space-16: 4rem;    --space-20: 5rem;    --space-24: 6rem;
  --space-32: 8rem;

  --radius-sm: 0.375rem; --radius-md: 0.625rem; --radius-lg: 1rem;
  --radius-xl: 1.5rem; --radius-full: 9999px;

  --transition-interactive: 200ms cubic-bezier(0.16, 1, 0.3, 1);

  --content-narrow: 680px;
  --content-default: 1000px;
  --content-wide: 1200px;

  --font-display: 'Zodiak', Georgia, 'Times New Roman', serif;
  --font-body: 'Switzer', 'Helvetica Neue', system-ui, sans-serif;
}

/* ---- Palette: LIGHT (warm cream) ---------------------------------------- */
:root,
[data-theme='light'] {
  --color-bg: #f6f1e7;            /* warm cream */
  --color-surface: #fbf7ee;
  --color-surface-2: #fffdf7;
  --color-surface-offset: #efe8d8;
  --color-divider: #e2d9c6;
  --color-border: #d8cdb6;

  --color-text: #24211b;          /* dark grounded ink */
  --color-text-muted: #6f695c;
  --color-text-faint: #a89f8c;
  --color-text-inverse: #f9f5ec;

  --color-primary: #1f5f5b;       /* deep teal */
  --color-primary-hover: #164643;
  --color-primary-active: #0f302e;
  --color-primary-soft: #dfe8e3;

  --color-gold: #a97b25;          /* warm earth gold */
  --color-gold-hover: #8c6318;
  --color-gold-soft: #ecdfc4;

  --shadow-sm: 0 1px 2px rgba(60, 48, 24, 0.06);
  --shadow-md: 0 6px 20px rgba(60, 48, 24, 0.09);
  --shadow-lg: 0 18px 44px rgba(60, 48, 24, 0.13);
}

/* ---- Palette: DARK ------------------------------------------------------ */
[data-theme='dark'] {
  --color-bg: #17150f;
  --color-surface: #1d1a13;
  --color-surface-2: #221e16;
  --color-surface-offset: #201d15;
  --color-divider: #2b271d;
  --color-border: #3a3527;

  --color-text: #ece5d5;
  --color-text-muted: #a39b88;
  --color-text-faint: #6c6553;
  --color-text-inverse: #17150f;

  --color-primary: #6bb5ae;
  --color-primary-hover: #85c8c1;
  --color-primary-active: #a0d6d0;
  --color-primary-soft: #23302d;

  --color-gold: #d5a94a;
  --color-gold-hover: #e3ba63;
  --color-gold-soft: #33291a;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 18px 44px rgba(0, 0, 0, 0.55);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #17150f; --color-surface: #1d1a13; --color-surface-2: #221e16;
    --color-surface-offset: #201d15; --color-divider: #2b271d; --color-border: #3a3527;
    --color-text: #ece5d5; --color-text-muted: #a39b88; --color-text-faint: #6c6553;
    --color-text-inverse: #17150f; --color-primary: #6bb5ae; --color-primary-hover: #85c8c1;
    --color-primary-active: #a0d6d0; --color-primary-soft: #23302d;
    --color-gold: #d5a94a; --color-gold-hover: #e3ba63; --color-gold-soft: #33291a;
  }
}

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

html {
  -webkit-text-size-adjust: none; text-size-adjust: none;
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility; scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  min-height: 100dvh; line-height: 1.6;
  font-family: var(--font-body); font-size: var(--text-base);
  color: var(--color-text); background-color: var(--color-bg);
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; height: auto; }
ul[role='list'] { list-style: none; }
input, button, textarea, select { font: inherit; color: inherit; }

h1, h2, h3, h4 { text-wrap: balance; line-height: 1.12; font-family: var(--font-display); font-weight: 500; }
p, li { text-wrap: pretty; }

a { color: inherit; text-decoration: none; }

::selection { background: color-mix(in oklab, var(--color-primary) 25%, transparent); }

:focus-visible {
  outline: 2px solid var(--color-primary); outline-offset: 3px; border-radius: var(--radius-sm);
}

button { cursor: pointer; background: none; border: none; }

a, button {
  transition: color var(--transition-interactive), background var(--transition-interactive),
    border-color var(--transition-interactive), box-shadow var(--transition-interactive),
    transform var(--transition-interactive);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important; animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important; scroll-behavior: auto !important;
  }
}

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border-width: 0;
}

/* ---- Layout helpers ----------------------------------------------------- */
.container { width: 100%; max-width: var(--content-wide); margin-inline: auto; padding-inline: clamp(1.25rem, 5vw, 3rem); }
.narrow { max-width: var(--content-narrow); }
.default { max-width: var(--content-default); }

section { padding-block: clamp(var(--space-16), 9vw, var(--space-32)); }

.eyebrow {
  display: inline-flex; align-items: center; gap: var(--space-2);
  font-size: var(--text-xs); letter-spacing: 0.16em; text-transform: uppercase;
  font-weight: 600; color: var(--color-primary);
}
.eyebrow::before {
  content: ''; width: 1.75rem; height: 1px; background: var(--color-gold);
}

.section-title { font-size: var(--text-xl); margin-block: var(--space-4) var(--space-6); }
.lead { color: var(--color-text-muted); font-size: var(--text-lg); max-width: 60ch; }

/* ---- Buttons ------------------------------------------------------------ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  font-size: var(--text-sm); font-weight: 600; letter-spacing: 0.01em;
  padding: var(--space-3) var(--space-6); border-radius: var(--radius-full);
  border: 1.5px solid transparent; line-height: 1;
}
.btn-primary { background: var(--color-primary); color: var(--color-text-inverse); }
.btn-primary:hover { background: var(--color-primary-hover); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-outline { border-color: var(--color-border); color: var(--color-text); background: var(--color-surface-2); }
.btn-outline:hover { border-color: var(--color-primary); color: var(--color-primary); transform: translateY(-2px); }
.btn-disabled {
  background: transparent; color: var(--color-text-faint);
  border: 1.5px dashed var(--color-border); cursor: not-allowed;
}
.btn-disabled:hover { transform: none; }
.btn .ico { width: 1.1em; height: 1.1em; }

/* ---- Header ------------------------------------------------------------- */
.header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in oklab, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-interactive), box-shadow var(--transition-interactive);
}
.header.scrolled { border-bottom-color: var(--color-divider); box-shadow: var(--shadow-sm); }
.nav { display: flex; align-items: center; justify-content: space-between; height: 4.5rem; gap: var(--space-6); }
.brand { display: inline-flex; align-items: center; gap: var(--space-3); font-family: var(--font-display); font-weight: 500; }
.brand .logo { width: 2.15rem; height: 2.15rem; color: var(--color-primary); flex-shrink: 0; }
.brand .brand-name { font-size: var(--text-lg); line-height: 1; }
.brand .brand-sub { display: block; font-family: var(--font-body); font-size: 0.7rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--color-text-muted); margin-top: 2px; }

.nav-links { display: flex; align-items: center; gap: var(--space-6); }
.nav-links a { font-size: var(--text-sm); color: var(--color-text-muted); font-weight: 500; }
.nav-links a:hover { color: var(--color-primary); }
.nav-right { display: flex; align-items: center; gap: var(--space-3); }

.icon-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 2.5rem; height: 2.5rem; border-radius: var(--radius-full);
  color: var(--color-text-muted); border: 1px solid var(--color-border);
  background: var(--color-surface-2);
}
.icon-btn:hover { color: var(--color-primary); border-color: var(--color-primary); }

.menu-toggle { display: none; }

/* ---- Hero --------------------------------------------------------------- */
.hero { position: relative; padding-top: clamp(var(--space-12), 7vw, var(--space-24)); padding-bottom: clamp(var(--space-16), 9vw, var(--space-32)); overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: clamp(var(--space-8), 5vw, var(--space-20)); align-items: center; }
.hero-title { font-size: var(--text-3xl); font-weight: 500; letter-spacing: -0.01em; margin-block: var(--space-5) var(--space-4); }
.hero-title .accent { color: var(--color-primary); font-style: italic; }
.hero-subtitle {
  font-family: var(--font-display); font-style: italic; font-size: var(--text-xl);
  color: var(--color-gold); font-weight: 400; letter-spacing: 0.01em; margin-bottom: var(--space-6);
}
.hero-lede { font-size: var(--text-lg); color: var(--color-text-muted); max-width: 46ch; margin-bottom: var(--space-8); }
.hero-ctas { display: flex; flex-wrap: wrap; gap: var(--space-3); }
.hero-note { margin-top: var(--space-6); font-size: var(--text-xs); color: var(--color-text-faint); }

/* Book cover */
.book-figure { display: flex; justify-content: center; }
.book {
  position: relative; width: min(340px, 80vw);
  border-radius: 2px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0,0,0,0.18), 0 2px 6px rgba(0,0,0,0.12);
  transition: transform 400ms cubic-bezier(0.16,1,0.3,1);
  background: transparent;
}
.book:hover { transform: translateY(-6px); }
.book img {
  width: 100%; height: auto; display: block;
}
.book::after {
  content: '';
  position: absolute; inset: 0;
  pointer-events: none;
  background: radial-gradient(ellipse 65% 50% at 90% 6%, rgba(255,255,255,0.38), rgba(255,255,255,0) 70%);
}

/* ---- Generic cards & sections ------------------------------------------ */
.surface { background: var(--color-surface); }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(var(--space-8), 5vw, var(--space-16)); align-items: start; }

.bullets { display: grid; gap: var(--space-4); margin-top: var(--space-6); }
.bullets li { display: flex; gap: var(--space-3); align-items: flex-start; }
.bullets li .dot { flex-shrink: 0; width: 1.35rem; height: 1.35rem; color: var(--color-primary); margin-top: 2px; }
.bullets li strong { font-weight: 600; }
.bullets li span { color: var(--color-text-muted); }

/* is / is-not */
.isnot-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-6); margin-top: var(--space-10); }
.isnot-card { border-radius: var(--radius-lg); padding: clamp(var(--space-6), 3vw, var(--space-10)); border: 1px solid var(--color-border); background: var(--color-surface-2); }
.isnot-card h3 { font-family: var(--font-body); font-weight: 700; font-size: var(--text-lg); display: flex; align-items: center; gap: var(--space-3); margin-bottom: var(--space-5); }
.isnot-card h3 svg { width: 1.6rem; height: 1.6rem; flex-shrink: 0; }
.isnot-card.is h3 { color: var(--color-primary); }
.isnot-card.isnot h3 { color: var(--color-gold-hover); }
.isnot-card ul { display: grid; gap: var(--space-3); }
.isnot-card li { display: flex; gap: var(--space-3); color: var(--color-text-muted); align-items: flex-start; }
.isnot-card li svg { width: 1.15rem; height: 1.15rem; flex-shrink: 0; margin-top: 3px; }
.isnot-card.is li svg { color: var(--color-primary); }
.isnot-card.isnot li svg { color: var(--color-gold-hover); }

.boundary {
  margin-top: var(--space-10); border-left: 3px solid var(--color-gold);
  background: var(--color-gold-soft); padding: clamp(var(--space-5), 3vw, var(--space-8));
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}
.boundary p { font-family: var(--font-display); font-style: italic; font-size: var(--text-lg); color: var(--color-text); max-width: 62ch; }

/* ---- Seven tools -------------------------------------------------------- */
.tools-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: var(--space-5); margin-top: var(--space-12); }
.tool-card {
  position: relative; background: var(--color-surface-2); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: var(--space-6);
  transition: transform var(--transition-interactive), box-shadow var(--transition-interactive), border-color var(--transition-interactive);
}
.tool-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--color-primary); }
.tool-num { font-family: var(--font-display); font-style: italic; font-size: var(--text-lg); color: var(--color-gold); }
.tool-ico { width: 2rem; height: 2rem; color: var(--color-primary); margin-block: var(--space-4) var(--space-3); }
.tool-card h3 { font-family: var(--font-body); font-weight: 700; font-size: var(--text-base); margin-bottom: var(--space-2); }
.tool-card p { font-size: var(--text-sm); color: var(--color-text-muted); }

/* ---- Zusatzmaterial ----------------------------------------------------- */
.qr-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: var(--space-5); margin-top: var(--space-12); }
.qr-card { text-align: center; background: var(--color-surface-2); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-6); }
.qr-badge {
  width: 4.4rem; height: 4.4rem; margin: 0 auto var(--space-4);
  border-radius: 999px; display: grid; place-items: center;
  font-size: 0.78rem; letter-spacing: 0.08em; text-transform: uppercase; font-weight: 700;
  background: color-mix(in oklab, var(--color-primary) 12%, var(--color-surface));
  color: var(--color-primary-active); border: 1px solid color-mix(in oklab, var(--color-primary) 28%, var(--color-border));
}
.qr-card h3 { font-family: var(--font-body); font-weight: 700; font-size: var(--text-base); margin-top: var(--space-3); }
.qr-card p { font-size: var(--text-sm); color: var(--color-text-muted); margin-top: var(--space-2); }
.material-note { margin-top: var(--space-10); text-align: center; font-size: var(--text-sm); color: var(--color-text-faint); }

/* ---- Author ------------------------------------------------------------- */
.author-grid { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: clamp(var(--space-8), 5vw, var(--space-16)); align-items: center; }
.author-portrait {
  aspect-ratio: 4/5; border-radius: var(--radius-lg); overflow: hidden;
  background:
    radial-gradient(120% 90% at 30% 20%, color-mix(in oklab, var(--color-primary) 22%, var(--color-surface)), transparent 60%),
    linear-gradient(160deg, var(--color-surface-offset), var(--color-surface));
  border: 1px solid var(--color-border); position: relative; display: grid; place-items: center;
}
.author-portrait img { width: 100%; height: 100%; object-fit: cover; display: block; }
.author-portrait .initials { font-family: var(--font-display); font-size: var(--text-3xl); color: var(--color-primary); opacity: 0.85; }
.author-portrait .ph-tag { position: absolute; bottom: var(--space-4); left: 50%; transform: translateX(-50%); font-size: var(--text-xs); color: var(--color-text-faint); white-space: nowrap; }
.author-body p + p { margin-top: var(--space-4); color: var(--color-text-muted); }
.author-body .role { color: var(--color-primary); font-weight: 600; font-size: var(--text-sm); letter-spacing: 0.02em; }

/* ---- Availability ------------------------------------------------------- */
.avail-card {
  margin-top: var(--space-10); text-align: center; border-radius: var(--radius-xl);
  padding: clamp(var(--space-8), 5vw, var(--space-16));
  background: linear-gradient(160deg, var(--color-primary), var(--color-primary-active));
  color: var(--color-text-inverse); position: relative; overflow: hidden;
}
[data-theme='dark'] .avail-card { color: #10201e; }
.avail-card h2 { color: inherit; font-size: var(--text-2xl); }
.avail-card p { color: color-mix(in oklab, currentColor 82%, transparent); max-width: 52ch; margin: var(--space-5) auto var(--space-8); }
.avail-card .avail-ctas { display: flex; flex-wrap: wrap; gap: var(--space-3); justify-content: center; }
.avail-card .btn-primary { background: var(--color-gold); color: #211a08; }
.avail-card .btn-primary:hover { background: var(--color-gold-hover); }
.avail-card .btn-disabled { color: color-mix(in oklab, currentColor 70%, transparent); border-color: color-mix(in oklab, currentColor 40%, transparent); }
.avail-badge { display: inline-block; font-size: var(--text-xs); letter-spacing: 0.14em; text-transform: uppercase; font-weight: 600; padding: 5px 14px; border-radius: var(--radius-full); background: color-mix(in oklab, #fff 22%, transparent); margin-bottom: var(--space-4); }

/* ---- Contact ------------------------------------------------------------ */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(var(--space-8), 5vw, var(--space-16)); align-items: start; }
.contact-link { display: inline-flex; align-items: center; gap: var(--space-3); font-family: var(--font-display); font-size: var(--text-xl); color: var(--color-primary); margin-top: var(--space-5); }
.contact-link:hover { color: var(--color-primary-hover); }
.contact-link svg { width: 1.5rem; height: 1.5rem; }

/* ---- Footer ------------------------------------------------------------- */
.footer { border-top: 1px solid var(--color-divider); background: var(--color-surface); padding-block: var(--space-16) var(--space-10); }
.footer-top { display: flex; flex-wrap: wrap; justify-content: space-between; gap: var(--space-8); }
.footer-links { display: flex; flex-wrap: wrap; gap: var(--space-6); }
.footer-links a { font-size: var(--text-sm); color: var(--color-text-muted); }
.footer-links a:hover { color: var(--color-primary); }
.legal-notice { margin-top: var(--space-8); padding: var(--space-4) var(--space-5); border: 1px dashed var(--color-border); border-radius: var(--radius-md); font-size: var(--text-xs); color: var(--color-text-faint); background: var(--color-surface-2); }
.footer-bottom { margin-top: var(--space-8); padding-top: var(--space-6); border-top: 1px solid var(--color-divider); font-size: var(--text-xs); color: var(--color-text-faint); display: flex; flex-wrap: wrap; justify-content: space-between; gap: var(--space-3); }

/* ---- Legal pages (Impressum / Datenschutz) ------------------------------ */
.legal-content { max-width: 46rem; margin: 0 auto; }
.legal-content h2 { font-family: var(--font-display); font-size: var(--text-xl); font-weight: 500; color: var(--color-text); margin-top: var(--space-10); margin-bottom: var(--space-4); }
.legal-content h2:first-of-type { margin-top: 0; }
.legal-content p { font-size: var(--text-base); line-height: 1.7; color: var(--color-text-muted); margin-bottom: var(--space-4); }
.legal-content ul { margin: 0 0 var(--space-4) var(--space-5); padding: 0; }
.legal-content ul li { font-size: var(--text-base); line-height: 1.7; color: var(--color-text-muted); margin-bottom: var(--space-2); list-style: disc; }
.legal-content a { color: var(--color-primary); text-decoration: underline; text-underline-offset: 3px; }
.legal-content a:hover { color: var(--color-primary-hover); }
.legal-content strong { color: var(--color-text); font-weight: 600; }
.legal-updated { margin-top: var(--space-10); padding-top: var(--space-6); border-top: 1px solid var(--color-divider); font-size: var(--text-sm); color: var(--color-text-faint); font-style: italic; }

/* ---- Reveal animation --------------------------------------------------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 700ms cubic-bezier(0.16,1,0.3,1), transform 700ms cubic-bezier(0.16,1,0.3,1); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; } }

/* ---- Responsive --------------------------------------------------------- */
@media (max-width: 900px) {
  .hero-grid, .grid-2, .author-grid, .contact-grid { grid-template-columns: 1fr; }
  .hero-grid { gap: var(--space-12); }
  .book-figure { order: -1; }
  .isnot-grid { grid-template-columns: 1fr; }
  .author-portrait { max-width: 340px; }
}

@media (max-width: 720px) {
  .nav-links { display: none; }
  .menu-toggle { display: inline-flex; }
  .brand .brand-sub { display: none; }
  .footer-top { flex-direction: column; }
}

/* mobile menu panel */
.mobile-menu {
  display: none; position: fixed; inset: 4.5rem 0 auto 0; z-index: 45;
  background: var(--color-surface); border-bottom: 1px solid var(--color-divider);
  padding: var(--space-6) clamp(1.25rem,5vw,3rem) var(--space-8); box-shadow: var(--shadow-md);
}
.mobile-menu.open { display: grid; gap: var(--space-4); }
.mobile-menu a { font-family: var(--font-display); font-size: var(--text-lg); color: var(--color-text); }
.mobile-menu a:hover { color: var(--color-primary); }