/* =========================================================================
   Ruben Wippermann – Persönliche Webseite
   Design-System in Blautönen · hell/dunkel · ohne externe Abhängigkeiten
   ========================================================================= */

:root {
  /* Blau-Palette */
  --blue-900: #071a35;
  --blue-800: #0a2450;
  --blue-700: #103a7e;
  --blue-600: #16409a;
  --blue-500: #1e5bd6;
  --blue-400: #3b82f6;
  --blue-300: #6aa2f7;
  --blue-200: #a9c8fb;
  --blue-100: #dbe8ff;
  --blue-50:  #eef4ff;

  /* Flächen & Text (hell) */
  --bg:        #ffffff;
  --bg-soft:   #f4f8ff;
  --surface:   #ffffff;
  --surface-2: #f0f5ff;
  --ink:       #0b1f3a;
  --ink-soft:  #33456a;
  --muted:     #5b6b8a;
  --line:      #dce6f7;
  --primary:      var(--blue-500);
  --primary-strong: var(--blue-600);
  --primary-ink:  #ffffff;
  --ring:      rgba(30, 91, 214, 0.35);
  --shadow:    0 10px 30px -12px rgba(9, 30, 66, 0.25);
  --shadow-lg: 0 30px 60px -20px rgba(9, 30, 66, 0.35);
  --radius:    16px;
  --radius-lg: 24px;
  --maxw:      1120px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg:        #08152a;
    --bg-soft:   #0b1d38;
    --surface:   #0e2244;
    --surface-2: #123059;
    --ink:       #eaf1fc;
    --ink-soft:  #c3d4ef;
    --muted:     #90a6c9;
    --line:      #1d3a66;
    --primary:      var(--blue-400);
    --primary-strong: var(--blue-300);
    --primary-ink:  #061529;
    --ring:      rgba(59, 130, 246, 0.45);
    --shadow:    0 10px 30px -12px rgba(0, 0, 0, 0.55);
    --shadow-lg: 0 30px 70px -20px rgba(0, 0, 0, 0.7);
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 84px; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
    Arial, "Helvetica Neue", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 clamp(22px, 4.5vw, 48px); }

/* ------------------------------------------------------------------ Nav */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav__inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 68px; gap: 18px;
}
.brand { display: flex; align-items: center; gap: 12px; font-weight: 700; color: var(--ink); }
.brand:hover { text-decoration: none; }
.brand__mark {
  width: 38px; height: 38px; border-radius: 11px; flex: 0 0 auto;
  background: linear-gradient(135deg, var(--blue-500), var(--blue-700));
  color: #fff; display: grid; place-items: center;
  font-weight: 800; letter-spacing: .5px; box-shadow: var(--shadow);
}
.brand__name { font-size: 1.02rem; line-height: 1.1; }
.brand__name small { display: block; font-weight: 500; color: var(--muted); font-size: .74rem; }

.nav__links { display: flex; align-items: center; gap: 6px; }
.nav__links a {
  color: var(--ink-soft); font-weight: 550; font-size: .95rem;
  padding: 8px 12px; border-radius: 10px; text-decoration: none;
}
.nav__links a:hover { background: var(--surface-2); color: var(--ink); }
.nav__cta { margin-left: 6px; }

.nav__toggle {
  display: none; background: none; border: 1px solid var(--line);
  border-radius: 10px; width: 44px; height: 44px; cursor: pointer; color: var(--ink);
}

/* ------------------------------------------------------------- Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 12px 20px; border-radius: 12px; font-weight: 650; font-size: .96rem;
  cursor: pointer; border: 1px solid transparent; transition: transform .08s ease, box-shadow .2s ease, background .2s;
  text-decoration: none;
}
.btn:hover { text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn--primary { background: var(--primary); color: var(--primary-ink); box-shadow: var(--shadow); }
.btn--primary:hover { background: var(--primary-strong); }
.btn--ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn--ghost:hover { background: var(--surface-2); }
.btn--light { background: rgba(255,255,255,.14); color: #fff; border-color: rgba(255,255,255,.28); }
.btn--light:hover { background: rgba(255,255,255,.24); }

/* ---------------------------------------------------------------- Hero */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(1000px 500px at 78% -10%, rgba(59,130,246,.35), transparent 60%),
    linear-gradient(160deg, var(--blue-800) 0%, var(--blue-700) 45%, var(--blue-600) 100%);
  color: #eaf1fc;
}
.hero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(700px 340px at 12% 110%, rgba(106,162,247,.28), transparent 60%);
}
.hero__inner { position: relative; z-index: 1; padding: 92px clamp(22px, 4.5vw, 48px) 96px; display: grid; grid-template-columns: 1.25fr .95fr; gap: 48px; align-items: center; }
.hero__eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.22);
  padding: 7px 14px; border-radius: 999px; font-size: .82rem; font-weight: 600;
  color: #dbe8ff; margin-bottom: 22px;
}
.hero__dot { width: 8px; height: 8px; border-radius: 50%; background: var(--blue-300); box-shadow: 0 0 0 4px rgba(106,162,247,.25); }
.hero h1 { font-size: clamp(2.2rem, 5vw, 3.5rem); line-height: 1.05; margin: 0 0 18px; letter-spacing: -.02em; color: #fff; }
.hero h1 .accent { color: var(--blue-300); }
.hero__lead { font-size: 1.16rem; color: #cfe0fb; max-width: 46ch; margin: 0 0 30px; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; }
.hero__roles { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 34px; }
.hero__role {
  font-size: .84rem; font-weight: 600; color: #eaf1fc;
  background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.18);
  padding: 8px 13px; border-radius: 10px;
}

.hero__card {
  background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.16);
  border-radius: var(--radius-lg); padding: 26px; backdrop-filter: blur(6px);
  box-shadow: var(--shadow-lg);
}
.hero__portrait {
  aspect-ratio: 4 / 5; border-radius: 18px; overflow: hidden;
  background: linear-gradient(150deg, var(--blue-600), var(--blue-800));
  display: grid; place-items: center; color: rgba(255,255,255,.5);
  border: 1px dashed rgba(255,255,255,.35); text-align: center; font-size: .82rem; padding: 16px;
}
.hero__card p { color: #cfe0fb; font-size: .9rem; margin: 16px 0 0; }

/* -------------------------------------------------------------- Section */
section { padding: 84px 0; }
.section--soft { background: var(--bg-soft); }
.section__head { max-width: 62ch; margin-bottom: 44px; }
.section__eyebrow { color: var(--primary); font-weight: 700; font-size: .82rem; letter-spacing: .12em; text-transform: uppercase; }
.section__head h2 { font-size: clamp(1.7rem, 3.4vw, 2.4rem); margin: 10px 0 14px; letter-spacing: -.015em; line-height: 1.12; }
.section__head p { color: var(--muted); font-size: 1.08rem; margin: 0; }

/* ---------------------------------------------------------------- Grid */
.grid { display: grid; gap: 22px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; box-shadow: var(--shadow); transition: transform .15s ease, box-shadow .2s ease, border-color .2s;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); border-color: var(--blue-200); }
.card__icon {
  width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center;
  background: var(--blue-50); color: var(--primary); margin-bottom: 16px;
}
@media (prefers-color-scheme: dark) { .card__icon { background: rgba(59,130,246,.14); } }
.card__icon svg { width: 24px; height: 24px; }
.card h3, .card h2 { margin: 0 0 8px; font-size: 1.16rem; }
.card p { margin: 0; color: var(--muted); font-size: .98rem; }
.card__tag { display: inline-block; margin-top: 14px; font-size: .78rem; font-weight: 650; color: var(--primary); background: var(--blue-50); padding: 4px 10px; border-radius: 999px; }
@media (prefers-color-scheme: dark) { .card__tag { background: rgba(59,130,246,.14); } }

/* -------------------------------------------------------------- About */
.about { display: grid; grid-template-columns: 1fr 1.2fr; gap: 46px; align-items: start; }
.about__photo {
  aspect-ratio: 1/1; border-radius: var(--radius-lg); border: 1px dashed var(--line);
  background: var(--surface-2); display: grid; place-items: center; text-align: center;
  color: var(--muted); font-size: .88rem; padding: 20px;
}
.about__lead { font-size: 1.14rem; color: var(--ink); }
.about ul { list-style: none; padding: 0; margin: 22px 0 0; display: grid; gap: 12px; }
.about li { display: flex; gap: 12px; align-items: flex-start; color: var(--ink-soft); }
.about li svg { flex: 0 0 auto; width: 22px; height: 22px; color: var(--primary); margin-top: 2px; }

/* --------------------------------------------------------------- Focus */
.focus-list { display: grid; gap: 14px; }
.focus-item {
  display: flex; gap: 16px; align-items: flex-start;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px 22px;
}
.focus-item__num {
  flex: 0 0 auto; width: 38px; height: 38px; border-radius: 10px; font-weight: 800;
  background: linear-gradient(135deg, var(--blue-500), var(--blue-700)); color: #fff;
  display: grid; place-items: center;
}
.focus-item h3 { margin: 0 0 4px; font-size: 1.08rem; }
.focus-item p { margin: 0; color: var(--muted); font-size: .96rem; }

/* --------------------------------------------------------------- Note */
.note {
  border-left: 3px solid var(--blue-400); background: var(--blue-50);
  color: var(--ink-soft); padding: 12px 16px; border-radius: 0 10px 10px 0;
  font-size: .9rem; margin-top: 18px;
}
@media (prefers-color-scheme: dark) { .note { background: rgba(59,130,246,.1); } }

/* --------------------------------------------------------------- CTA */
.cta {
  background: linear-gradient(150deg, var(--blue-700), var(--blue-600));
  color: #fff; border-radius: var(--radius-lg); padding: 52px; text-align: center;
  box-shadow: var(--shadow-lg);
}
.cta h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); margin: 0 0 12px; color: #fff; }
.cta p { color: #cfe0fb; max-width: 52ch; margin: 0 auto 26px; }
.cta__actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* -------------------------------------------------------------- Contact */
.contact { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.contact__methods { display: grid; gap: 14px; }
.contact__method { display: flex; gap: 14px; align-items: center; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; }
.contact__method svg { width: 22px; height: 22px; color: var(--primary); flex: 0 0 auto; }
.contact__method small { display: block; color: var(--muted); font-size: .78rem; }
.contact__method strong { font-weight: 650; overflow-wrap: anywhere; }

.form { display: grid; gap: 14px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 26px; }
.form label { font-size: .86rem; font-weight: 600; color: var(--ink-soft); display: block; margin-bottom: 6px; }
.form input, .form textarea {
  /* #6f8fc0 statt var(--line): Formularränder sind interaktive Bedienelement-
     grenzen (WCAG 1.4.11, ≥3:1 nötig) – var(--line) läge hier bei ~1,3:1. */
  width: 100%; padding: 12px 14px; border-radius: 11px; border: 1px solid #6f8fc0;
  background: var(--bg); color: var(--ink); font: inherit; font-size: .96rem;
}
.form input:focus, .form textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 4px var(--ring); }
.form textarea { min-height: 120px; resize: vertical; }
.form .hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* -------------------------------------------------------------- Footer */
.footer { background: var(--blue-900); color: #b9cdf0; padding: 56px 0 30px; }
.footer a { color: #cfe0fb; }
.footer__grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 32px; margin-bottom: 34px; }
.footer h4, .footer h3 { color: #fff; font-size: .95rem; margin: 0 0 14px; }
.footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 9px; font-size: .92rem; }
.footer__brand { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.footer__brand .brand__name { color: #fff; }
.footer__bottom { border-top: 1px solid rgba(255,255,255,.12); padding-top: 20px; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: .84rem; color: #8fa9d4; }

/* -------------------------------------------------------- Legal pages */
.legal { padding: 60px 0 80px; }
.legal .container { max-width: 780px; }
.legal h1 { font-size: 2rem; margin: 0 0 8px; }
.legal h2 { font-size: 1.2rem; margin: 34px 0 8px; }
.legal p, .legal li { color: var(--ink-soft); }
.legal .back { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 24px; font-weight: 600; }
.tag-todo { color: #b45309; background: #fef3c7; border-radius: 6px; padding: 1px 7px; font-size: .82em; font-weight: 600; }
@media (prefers-color-scheme: dark) { .tag-todo { color: #fcd34d; background: rgba(251,191,36,.14); } }

/* -------------------------------------------------------- Responsive */
@media (max-width: 900px) {
  .hero__inner { grid-template-columns: 1fr; gap: 34px; }
  .about, .contact { grid-template-columns: 1fr; }
  .grid--3, .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .nav__links { display: none; }
  .nav__links.is-open {
    display: flex; position: absolute; top: 68px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 4px; padding: 12px 16px 18px;
    background: var(--bg); border-bottom: 1px solid var(--line); box-shadow: var(--shadow);
  }
  .nav__links.is-open a { padding: 13px 12px; }
  .nav__toggle { display: grid; place-items: center; }
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
  .cta { padding: 34px 22px; }
  section { padding: 60px 0; }
  .timeline::before { left: 9px; }
  .timeline__item { padding-left: 34px; }
  .timeline__dot { left: 2px; }
}

/* --------------------------------------------------------- Werdegang */
.timeline { position: relative; margin: 0; padding: 0; list-style: none; max-width: 74ch; }
.timeline::before {
  content: ""; position: absolute; left: 15px; top: 6px; bottom: 6px; width: 2px;
  background: var(--line);
}
.timeline__item { position: relative; padding-left: 46px; }
.timeline__item + .timeline__item { margin-top: 30px; }
.timeline__dot {
  position: absolute; left: 8px; top: 4px; width: 16px; height: 16px; border-radius: 50%;
  background: var(--surface); border: 3px solid var(--primary); box-shadow: 0 0 0 4px var(--bg-soft);
}
.timeline__year {
  display: inline-block; font-weight: 700; font-size: .82rem; letter-spacing: .04em;
  color: var(--primary); text-transform: uppercase; margin-bottom: 4px;
}
.timeline__title { margin: 0 0 4px; font-size: 1.08rem; font-weight: 650; color: var(--ink); }
.timeline__text { margin: 0; color: var(--muted); font-size: .96rem; }

/* ------------------------------------------------------ Zahlen & Fakten */
.stats { padding: 54px 0; background: var(--blue-900); }
.stats__grid {
  list-style: none; margin: 0; padding: 0; display: grid;
  grid-template-columns: repeat(4, 1fr); gap: 28px; text-align: center;
}
.stat { display: flex; flex-direction: column; gap: 6px; }
.stat__num {
  font-size: clamp(1.5rem, 3vw, 2.1rem); font-weight: 800; letter-spacing: -.01em;
  color: #fff; font-variant-numeric: tabular-nums;
}
.stat__label { font-size: .86rem; color: var(--blue-200); line-height: 1.4; }
@media (max-width: 900px) { .stats__grid { grid-template-columns: repeat(2, 1fr); gap: 30px 20px; } }

/* ------------------------------------------------------------- Presse */
.presse-layout { display: grid; grid-template-columns: 1.6fr 1fr; gap: 46px; align-items: start; }
.steckbrief {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 28px; box-shadow: var(--shadow); position: sticky; top: 100px;
}
.steckbrief__eyebrow { color: var(--primary); font-weight: 700; font-size: .78rem; letter-spacing: .1em; text-transform: uppercase; }
.steckbrief__list { margin: 16px 0 0; display: flex; flex-direction: column; gap: 16px; }
.steckbrief__list > div { padding-top: 14px; border-top: 1px solid var(--line); }
.steckbrief__list > div:first-child { padding-top: 0; border-top: 0; }
.steckbrief__list dt { font-size: .74rem; font-weight: 650; letter-spacing: .04em; text-transform: uppercase; color: var(--muted); margin: 0 0 3px; }
.steckbrief__list dd { margin: 0; font-size: .95rem; color: var(--ink); line-height: 1.45; }
@media (max-width: 900px) {
  .presse-layout { grid-template-columns: 1fr; }
  .steckbrief { position: static; }
}