/* ═══════════════════════════════════════════════════════════
   Gemeinsame Styles für alle Seiten:
   Schriftart, Navigation, Hamburger-Menü, reduzierte Bewegung
   ═══════════════════════════════════════════════════════════ */

/* ─── SCHRIFT: Inter selbst gehostet (DSGVO: kein Abruf von Google-Servern) ─── */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url('fonts/inter-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url('fonts/inter-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

/* ─── DARK MODE: Nav-Farben ──────────────────────────────── */
:root {
  --nav-bg: rgba(255,255,255,.92);
  --nav-mobile-bg: rgba(255,255,255,.97);
  --nav-border: #e5e7eb;
  --nav-logo-color: #1d4ed8;
  --nav-logo-sub: #6b7280;
  --nav-link-color: #4b5563;
  --nav-link-hover-bg: #f3f4f6;
  --nav-link-hover-color: #111827;
  --nav-link-active-bg: #eff6ff;
  --nav-link-active-color: #1d4ed8;
  --nav-toggle-bar: #374151;
}

/* Automatisch nach Systemeinstellung, sofern kein manueller Modus per Button gewählt wurde */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --nav-bg: rgba(16,21,31,.92);
    --nav-mobile-bg: rgba(16,21,31,.97);
    --nav-border: #263043;
    --nav-logo-color: #6fa8ea;
    --nav-logo-sub: #9aa5b1;
    --nav-link-color: #cbd5e1;
    --nav-link-hover-bg: #1f2937;
    --nav-link-hover-color: #f9fafb;
    --nav-link-active-bg: #1e2f4d;
    --nav-link-active-color: #93c5fd;
    --nav-toggle-bar: #d1d5db;
  }
}

/* Manuell per Button gewählter Modus überschreibt die Systemeinstellung */
:root[data-theme="dark"] {
  --nav-bg: rgba(16,21,31,.92);
  --nav-mobile-bg: rgba(16,21,31,.97);
  --nav-border: #263043;
  --nav-logo-color: #6fa8ea;
  --nav-logo-sub: #9aa5b1;
  --nav-link-color: #cbd5e1;
  --nav-link-hover-bg: #1f2937;
  --nav-link-hover-color: #f9fafb;
  --nav-link-active-bg: #1e2f4d;
  --nav-link-active-color: #93c5fd;
  --nav-toggle-bar: #d1d5db;
}

/* ─── NAVIGATION ──────────────────────────────────────────── */
nav {
  position: sticky;
  top: 0;
  z-index: 200;
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--nav-border);
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 1rem;
  color: var(--nav-logo-color);
  text-decoration: none;
  line-height: 1.2;
  flex-shrink: 0;
}

.nav-logo img {
  height: 42px;
  width: auto;
  display: block;
  background: #fff;
  padding: 5px 8px;
  border-radius: 9px;
  border: 1px solid var(--nav-border);
  box-shadow: 0 1px 2px rgba(0,0,0,.06);
}

.nav-logo-text span {
  display: block;
  font-weight: 400;
  font-size: .75rem;
  color: var(--nav-logo-sub);
  letter-spacing: .02em;
}

/* ─── NAV-ACTIONS: Theme-Toggle, Hamburger, Links ─────────── */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 4px;
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  background: none;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1.1rem;
  line-height: 1;
  transition: background .15s;
}

.theme-toggle:hover {
  background: var(--nav-link-hover-bg);
}

.theme-toggle .tt-sun {
  display: none;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .tt-moon { display: none; }
  :root:not([data-theme="light"]) .theme-toggle .tt-sun { display: inline; }
}

:root[data-theme="dark"] .theme-toggle .tt-moon { display: none; }
:root[data-theme="dark"] .theme-toggle .tt-sun { display: inline; }

@media (max-width: 480px) {
  .nav-logo-text {
    display: none;
  }
}

.nav-links {
  display: flex;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  display: block;
  padding: 6px 14px;
  font-size: .875rem;
  font-weight: 500;
  color: var(--nav-link-color);
  text-decoration: none;
  border-radius: 8px;
  transition: background .15s, color .15s;
}

.nav-links a:hover {
  background: var(--nav-link-hover-bg);
  color: var(--nav-link-hover-color);
}

.nav-links a.active {
  background: var(--nav-link-active-bg);
  color: var(--nav-link-active-color);
}

.nav-cta {
  background: #2563eb !important;
  color: #ffffff !important;
  padding: 8px 18px !important;
}

.nav-cta:hover {
  background: #1d4ed8 !important;
}

/* ─── HAMBURGER ───────────────────────────────────────────── */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  border-radius: 8px;
  transition: background .15s;
  flex-shrink: 0;
}

.nav-toggle:hover {
  background: var(--nav-link-hover-bg);
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--nav-toggle-bar);
  border-radius: 2px;
  transition: transform .25s, opacity .25s;
  transform-origin: center;
}

.nav-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 640px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--nav-mobile-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--nav-border);
    flex-direction: column;
    gap: 0;
    padding: 8px 16px 16px;
    box-shadow: 0 4px 16px rgba(0,0,0,.1);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    padding: 12px 16px;
    font-size: 1rem;
    border-radius: 10px;
  }

  .nav-cta {
    margin-top: 8px;
    text-align: center;
    justify-content: center;
  }
}

/* ─── REDUZIERTE BEWEGUNG ─────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto !important;
  }

  *, *::before, *::after {
    transition: none !important;
    animation: none !important;
  }
}