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

:root {
  --royal: #003f8a;
  --royal-light: #0057c2;
  --royal-dark: #001f44;
  --off-white: #f5f8ff;
  --text-muted: rgba(255,255,255,0.45);
  --accent: #7ab3ff;
  --hero-overlay: rgba(0,15,40,0.52);
}

/* ========================= Base ========================= */

body {
  background: var(--royal-dark);
  color: var(--off-white);
  font-family: 'Barlow', sans-serif;
  min-height: 100vh;
}

/* ========================= Nav ========================= */

nav {
  display: flex; justify-content: space-between; align-items: center; gap: 2em;
  padding: 1.2rem 2.5rem;
  background: rgba(0,20,60,0.88); backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.07);
  position: sticky; top: 0; z-index: 100;
}
nav .logo { font-family: 'Bebas Neue', sans-serif; font-size: 1.7rem; letter-spacing: 0.12em; color: #fff; text-decoration: none; }
nav ul { list-style: none; display: flex; column-gap: 2rem; row-gap: 0.5em; flex-wrap: wrap; }
nav ul a { color: var(--text-muted); text-decoration: none; font-size: 0.85rem; letter-spacing: 0.08em; text-transform: uppercase; transition: color 0.2s; }
nav ul a:hover, nav ul a.active { color: #fff; }

/* ========================= Hero ========================= */

.hero {
  position: relative; min-height: 88vh; display: flex; align-items: center; overflow: hidden;
  background: linear-gradient(var(--hero-overlay), var(--hero-overlay)), url('../img/Hintergrund.jpg') center/cover no-repeat;
}
.hero-content { position: relative; z-index: 2; padding: 0 3rem; max-width: 820px; animation: fadeUp 0.9s ease both; }

@keyframes fadeUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }

.hero h1 {
  font-family: 'Bebas Neue', sans-serif; font-size: clamp(3.5rem, 9vw, 7rem);
  line-height: 0.95; letter-spacing: 0.03em; color: #fff;
  text-shadow: 0 4px 40px rgba(0,80,200,0.7); margin-bottom: 1.6rem;
}
.hero h1 span { color: var(--accent); }
.hero p { font-size: 1.05rem; font-weight: 300; color: rgba(255,255,255,0.6); line-height: 1.8; max-width: 480px; margin-bottom: 2.5rem; }

/* ========================= Hero-Tag (geteilt) ========================= */

.hero-tag {
  font-size: 0.72rem; letter-spacing: 0.2em; text-transform: uppercase;
  color: rgba(255,255,255,0.45); margin-bottom: 1.2rem;
}
.page-hero .hero-tag { margin-bottom: 1rem; }

/* ========================= Button ========================= */

.btn {
  display: inline-block; padding: 0.8rem 2.4rem;
  background: #fff; color: var(--royal-dark);
  font-family: 'Barlow', sans-serif; font-size: 0.82rem; font-weight: 500;
  letter-spacing: 0.12em; text-transform: uppercase; text-decoration: none;
  transition: background 0.2s, color 0.2s, transform 0.15s;
}
.btn:hover { background: var(--royal-light); color: #fff; transform: translateY(-2px); }

/* ========================= Cards ========================= */

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px,1fr)); gap: 1px; background: rgba(255,255,255,0.06); }
.card { background: var(--royal-dark); padding: 2.5rem 2rem; transition: background 0.3s; }
.card:hover { background: var(--royal); }
.card .num { font-family: 'Bebas Neue', sans-serif; font-size: 2.5rem; color: rgba(255,255,255,0.07); line-height: 1; margin-bottom: 0.8rem; }
.card h3 { font-family: 'Bebas Neue', sans-serif; font-size: 1.4rem; letter-spacing: 0.05em; margin-bottom: 0.5rem; }
.card p { font-size: 0.88rem; color: rgba(255,255,255,0.5); line-height: 1.65; font-weight: 300; }

/* ========================= Footer ========================= */

footer { text-align: center; padding: 2rem; font-size: 0.78rem; color: rgba(255,255,255,0.22); border-top: 1px solid rgba(255,255,255,0.07); }
footer a { color: rgba(255,255,255,0.22); text-decoration: none; margin: 0 0.5rem; }
footer a:hover { color: #fff; }

/* ========================= Dark-Mode-Toggle ========================= */

#dark-mode-toggle {
  padding: 0.6rem 1rem;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.2);
  cursor: pointer;
  background: transparent;
  color: rgba(255,255,255,0.8);
  font-family: 'Barlow', sans-serif;
  font-size: 0.8rem; font-weight: 500;
  letter-spacing: 0.08em; text-transform: uppercase;
  transition: all 0.25s ease;
}
#dark-mode-toggle:hover { background: rgba(255,255,255,0.08); transform: translateY(-1px); }

/* ========================= Unterseiten ========================= */

.page-hero { padding: 5rem 3rem 3.5rem; max-width: 820px; margin: 0 auto; animation: fadeUp 0.9s ease both; }
.page-hero h1 { font-family: 'Bebas Neue', sans-serif; font-size: clamp(2.8rem, 7vw, 5rem); line-height: 1; letter-spacing: 0.03em; color: #fff; margin-bottom: 2rem; }
.page-hero h1 span { color: var(--accent); }

.page { max-width: 820px; margin: 0 auto; padding: 0 3rem 4rem; }
.page hr { border: none; border-top: 1px solid rgba(255,255,255,0.07); margin: 2.5rem 0; }

.bio, .page p { font-size: 1.05rem; font-weight: 300; color: rgba(255,255,255,0.6); line-height: 1.9; margin-bottom: 0.6rem; }
.skills-label, .page .label { font-size: 0.72rem; letter-spacing: 0.2em; text-transform: uppercase; color: rgba(255,255,255,0.4); margin-bottom: 1rem; }

.skills { display: flex; flex-wrap: wrap; gap: 0.6rem; }
.skill { padding: 0.4rem 1.1rem; border: 1px solid rgba(255,255,255,0.15); font-size: 0.82rem; letter-spacing: 0.08em; text-transform: uppercase; color: rgba(255,255,255,0.7); transition: border-color 0.2s, color 0.2s; }
.skill:hover { border-color: var(--accent); color: var(--accent); }

/* ========================= Dark Mode ========================= */

body.dark {
  --hero-overlay: rgba(0,0,0,0.65);
  --accent: #60a5fa;
  background: #1e293b;
  color: #e2e8f0;
}

body.dark nav { background: rgba(15,23,42,0.95); border-bottom: 1px solid #334155; }
body.dark nav ul a { color: rgba(226,232,240,0.7); }

body.dark .hero-tag { color: rgba(226,232,240,0.5); }
body.dark .hero p { color: rgba(226,232,240,0.8); }

body.dark .btn { background: var(--accent); color: #0b1220; }
body.dark .btn:hover { background: #3b82f6; }

body.dark .card { background: #334155; }
body.dark .card:hover { background: #475569; }
body.dark .card p { color: rgba(226,232,240,0.75); }

body.dark footer { color: rgba(226,232,240,0.6); border-top: 1px solid #334155; }
body.dark footer a { color: rgba(226,232,240,0.6); }

body.dark #dark-mode-toggle { background: var(--accent); color: #0b1220; border-color: transparent; box-shadow: 0 0 18px rgba(96,165,250,0.4); }

body.dark .page p, body.dark .bio { color: rgba(226,232,240,0.8); }
body.dark .skill { border-color: rgba(226,232,240,0.2); color: rgba(226,232,240,0.7); }