/* =============================================================
   COSY FLATS — SUBPAGE BASE STYLES
   Gemeinsames Basis-CSS für die Unterseiten (faq, business,
   studenten, ueber-uns, kontakt). Extrahiert aus wohnen-auf-zeit.html,
   damit neue Seiten kein CSS duplizieren.
   Wird IMMER zusammen mit theme-warm.css geladen (Override danach).
   ============================================================= */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-font-smoothing: antialiased; scroll-behavior: smooth; }
:root {
  --black: #0a0a0a;
  --cream: #f5f3ee;
  --white: #ffffff;
  --magenta: #A70A3D;
  --magenta-dark: #67072E;
  --magenta-glow: rgba(167, 10, 61, 0.55);
  --gray-line: rgba(255,255,255,0.08);
  --gray-mid: rgba(245,243,238,0.72);
  --gray-soft: rgba(245,243,238,0.85);
  --max-w: 1320px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}
body {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-variation-settings: "wdth" 100;
  color: var(--cream); background: var(--black);
  line-height: 1.45; letter-spacing: 0.01em;
  overflow-x: hidden;
}
em { font-style: normal; color: var(--magenta); }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
::selection { background: var(--magenta); color: var(--white); }
h1, h2, h3 { font-family: 'Plus Jakarta Sans', sans-serif; font-weight: 400; line-height: 1.05; }

/* ===== NAV ===== */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding: 16px 40px;
  background: #0a0a0a;
  border-bottom: 1px solid rgba(167,10,61,0.18);
  transition: padding 0.4s var(--ease), border-color 0.4s var(--ease), box-shadow 0.4s var(--ease);
}
.nav.solid {
  border-bottom: 1px solid rgba(167,10,61,0.32);
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
  padding: 12px 40px;
}
.nav-inner { max-width: var(--max-w); margin: 0 auto; display: flex; align-items: center; justify-content: space-between; }
.nav-logo {
  display: flex; align-items: center; gap: 12px;
  font-family: 'Plus Jakarta Sans', sans-serif; font-size: 26px;
  color: var(--white); letter-spacing: 0.02em;
}
.nav-logo .logo-accent { color: var(--magenta); }
.nav-logo svg {
  width: 32px; height: 32px;
  filter: drop-shadow(0 0 10px rgba(167,10,61,0.55));
}
.nav-logo svg { color: var(--magenta); }
.nav-links { display: flex; align-items: center; gap: 36px; list-style: none; }
.nav-links a {
  font-size: 13px; font-weight: 500; color: var(--white);
  position: relative; padding: 6px 0;
  letter-spacing: 0.04em;
  transition: color 0.25s var(--ease);
}
.nav-links a::after {
  content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 2px;
  background: var(--magenta); transform: scaleX(0); transform-origin: right;
  transition: transform 0.4s var(--ease);
  border-radius: 2px;
}
.nav-links a:hover, .nav-links a.active { color: var(--magenta); }
.nav-links a:hover::after, .nav-links a.active::after { transform: scaleX(1); transform-origin: left; }
.nav-right { display: flex; align-items: center; gap: 14px; }
.lang-current {
  color: var(--white); font-size: 13px; font-weight: 500;
  padding: 8px 14px; border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.18);
  background: rgba(255,255,255,0.04);
}

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 14px 28px; border-radius: 999px;
  font-size: 14px; font-weight: 400;
  transition: all 0.4s var(--ease); letter-spacing: 0.04em;
  cursor: pointer;
}
.btn-primary {
  background: linear-gradient(135deg, var(--magenta) 0%, var(--magenta-dark) 100%);
  color: var(--white);
  box-shadow: 0 6px 28px var(--magenta-glow);
  border: 1px solid rgba(255,255,255,0.08);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 48px var(--magenta-glow); }
.btn-whatsapp {
  background: #25D366; color: var(--white);
  box-shadow: 0 6px 28px rgba(37, 211, 102, 0.45);
}
.btn-whatsapp:hover { transform: translateY(-2px); box-shadow: 0 14px 48px rgba(37, 211, 102, 0.55); }
.btn-outline {
  background: transparent; color: var(--white);
  border: 1px solid rgba(255,255,255,0.25);
}
.btn-outline:hover { background: var(--white); color: var(--black); border-color: var(--white); }

/* === HAMBURGER + MOBILE MENU === */
.nav-burger {
  display: none;
  width: 40px; height: 40px;
  background: transparent; border: none;
  cursor: pointer; padding: 8px;
  flex-direction: column; align-items: center; justify-content: center;
  gap: 5px; border-radius: 999px;
  transition: background 0.25s ease;
}
.nav-burger:hover { background: rgba(255,255,255,0.06); }
.nav-burger span {
  display: block; width: 22px; height: 2px;
  background: #fff; border-radius: 2px;
  transition: transform 0.35s var(--ease), opacity 0.25s ease;
}
.nav-burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); background: var(--magenta); }
.nav-burger.open span:nth-child(2) { opacity: 0; }
.nav-burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); background: var(--magenta); }
.mobile-menu-overlay {
  position: fixed; inset: 0; z-index: 98;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px);
  opacity: 0; visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}
.mobile-menu-overlay.open { opacity: 1; visibility: visible; }
.mobile-menu {
  position: fixed; top: 0; right: 0; bottom: 0;
  width: min(360px, 88vw);
  background: #0a0a0a;
  border-left: 1px solid rgba(167,10,61,0.22);
  box-shadow: -16px 0 60px rgba(0,0,0,0.5);
  padding: 110px 32px 40px;
  transform: translateX(100%);
  transition: transform 0.4s var(--ease);
  z-index: 99; overflow-y: auto;
  display: flex; flex-direction: column;
}
.mobile-menu.open { transform: translateX(0); }
.mobile-menu-links { list-style: none; padding: 0; margin: 0 0 32px; display: flex; flex-direction: column; gap: 4px; }
.mobile-menu-links a {
  display: block;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 24px; letter-spacing: 0.03em; color: #fff;
  padding: 14px 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: color 0.25s ease, padding 0.3s var(--ease);
}
.mobile-menu-links a:hover { color: var(--magenta); padding-left: 8px; }
.mobile-menu-cta { align-self: stretch; justify-content: center; }

/* ===== HERO mit Heidelberg-Background ===== */
.hero {
  position: relative;
  min-height: 100vh;
  width: 100%;
  overflow: hidden;
  display: flex; align-items: center; justify-content: center;
  text-align: center;
  padding: 140px 40px 80px;
}
/* Kompakte Hero-Variante für Unterseiten (FAQ, Kontakt etc.) */
.hero.hero-sub { min-height: 58vh; padding: 150px 40px 70px; }
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
  background-image: url('images/heidelberg-hero.jpg');
  background-size: cover; background-position: center;
  transform: scale(1.04);
  animation: heroZoom 20s ease-out forwards;
}
@keyframes heroZoom { from { transform: scale(1.04); } to { transform: scale(1.0); } }
.hero-overlay {
  position: absolute; inset: 0; z-index: 1;
  background:
    linear-gradient(180deg, rgba(10,10,10,0.55) 0%, rgba(10,10,10,0.72) 70%, rgba(10,10,10,0.95) 100%),
    radial-gradient(ellipse 900px 500px at 50% 40%, rgba(167, 10, 61, 0.18) 0%, transparent 70%);
}
.hero-content {
  position: relative; z-index: 2;
  max-width: 880px;
  width: 100%;
}
.hero .eyebrow {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 12px; font-weight: 400;
  letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--magenta);
  margin-bottom: 24px;
  display: inline-flex; align-items: center; gap: 12px;
}
.hero .eyebrow::before,
.hero .eyebrow::after {
  content: ''; display: inline-block; width: 28px; height: 1px;
  background: var(--magenta);
}
.hero h1 {
  font-size: clamp(48px, 7vw, 96px);
  color: var(--white);
  margin-bottom: 20px;
  text-shadow: 0 4px 28px rgba(0,0,0,0.5);
}
.hero h1 em { color: var(--magenta); }
.hero .pitch {
  font-size: clamp(17px, 1.4vw, 20px);
  line-height: 1.6;
  color: var(--white);
  max-width: 680px;
  margin: 0 auto 40px;
  text-shadow: 0 2px 24px rgba(0,0,0,0.7);
}
.hero-ctas {
  display: flex; gap: 14px; justify-content: center; flex-wrap: wrap;
  margin-bottom: 28px;
}
.hero-ctas .btn { padding: 16px 32px; font-size: 15px; }
.hero-ctas .btn svg { width: 18px; height: 18px; }
.hero-meta {
  display: inline-flex; align-items: center; gap: 10px;
  color: rgba(255,255,255,0.75);
  font-size: 13px; letter-spacing: 0.06em;
}
.hero-meta a { color: var(--white); border-bottom: 1px dashed rgba(255,255,255,0.62); transition: all 0.25s; }
.hero-meta a:hover { color: var(--magenta); border-color: var(--magenta); }

/* ===== PERKS / FEATURES ===== */
.perks-section {
  padding: 100px 40px;
  max-width: var(--max-w); margin: 0 auto;
}
.perks-head { text-align: center; max-width: 760px; margin: 0 auto 60px; }
.perks-head .eyebrow {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 12px; font-weight: 400;
  letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--magenta); margin-bottom: 18px;
  display: inline-flex; align-items: center; gap: 12px;
}
.perks-head .eyebrow::before,
.perks-head .eyebrow::after {
  content: ''; display: inline-block; width: 28px; height: 1px;
  background: var(--magenta);
}
.perks-head h2 {
  font-size: clamp(36px, 5vw, 56px);
  color: var(--cream); margin-bottom: 14px;
}
.perks-head h2 em { color: var(--magenta); }
.perks-head p {
  font-size: 17px; color: var(--gray-soft);
  line-height: 1.55; max-width: 580px; margin: 0 auto;
}
.perks-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.perk {
  background: linear-gradient(180deg, #141414 0%, #0e0e0e 100%);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 18px;
  padding: 32px 28px;
  transition: all 0.35s var(--ease);
}
.perk:hover {
  transform: translateY(-4px);
  border-color: rgba(167,10,61,0.35);
  box-shadow: 0 14px 40px rgba(0,0,0,0.4), 0 0 50px -16px rgba(167,10,61,0.35);
}
.perk-icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  background: rgba(167,10,61,0.10);
  border: 1px solid rgba(167,10,61,0.22);
  color: var(--magenta);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
}
.perk-icon svg { width: 22px; height: 22px; }
.perk h3 {
  font-size: 22px; color: var(--cream);
  margin-bottom: 10px; line-height: 1.1;
}
.perk p {
  font-size: 14px; color: var(--gray-mid);
  line-height: 1.55;
}

/* ===== CONTACT-BAND ===== */
.contact-band {
  margin: 80px auto 120px;
  max-width: var(--max-w); padding: 0 40px;
}
.contact-inner {
  background: linear-gradient(135deg, #1a1014 0%, #0a0a0a 100%);
  border: 1px solid rgba(167,10,61,0.25);
  border-radius: 32px;
  padding: 70px 50px;
  text-align: center;
  position: relative; overflow: hidden;
}
.contact-inner::before {
  content: ''; position: absolute; top: -40%; left: 50%; transform: translateX(-50%);
  width: 700px; height: 700px; border-radius: 50%;
  background: radial-gradient(circle, rgba(167, 10, 61, 0.22) 0%, transparent 65%);
  pointer-events: none;
}
.contact-inner > * { position: relative; z-index: 2; }
.contact-inner h2 {
  font-size: clamp(36px, 5vw, 56px);
  color: var(--cream); margin-bottom: 18px;
}
.contact-inner h2 em { color: var(--magenta); }
.contact-inner p {
  color: var(--gray-soft); max-width: 560px;
  margin: 0 auto 32px; line-height: 1.6;
}
.contact-ctas {
  display: flex; gap: 14px; justify-content: center; flex-wrap: wrap;
}
.contact-ctas .btn { padding: 16px 32px; font-size: 15px; }

/* ===== FOOTER ===== */
footer {
  padding: 60px 40px 30px;
  background: #0a0a0a;
  border-top: 1px solid var(--gray-line);
}
.footer-inner {
  max-width: var(--max-w); margin: 0 auto;
  display: flex; flex-direction: column; align-items: center; gap: 24px;
  text-align: center;
}
.footer-inner .nav-logo { color: var(--cream); }
.footer-inner small {
  font-size: 12px; color: rgba(245,243,238,0.8);
}
.footer-legal { display: flex; gap: 24px; flex-wrap: wrap; justify-content: center; }
.footer-legal a { font-size: 12px; color: rgba(245,243,238,0.72); }
.footer-legal a:hover { color: var(--magenta); }

/* ===== WHATSAPP-FLOAT ===== */
.whatsapp-float {
  position: fixed; bottom: 28px; right: 28px; z-index: 90;
  width: 60px; height: 60px; border-radius: 50%;
  background: #25D366; color: var(--white);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 8px 24px rgba(37, 211, 102, 0.45);
  transition: transform 0.3s var(--ease);
}
.whatsapp-float:hover { transform: scale(1.1); }
.whatsapp-float svg { width: 30px; height: 30px; }

/* ===== RESPONSIVE ===== */
@media (max-width: 960px) {
  .nav-burger { display: flex; }
  .nav-links { display: none; }
  .perks-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  .nav { padding: 14px 20px; }
  .hero { padding: 120px 20px 60px; }
  .hero.hero-sub { padding: 130px 20px 50px; }
  .perks-section { padding: 70px 20px; }
  .perks-grid { grid-template-columns: 1fr; }
  .contact-band { padding: 0 20px; margin: 60px auto 80px; }
  .contact-inner { padding: 50px 24px; border-radius: 22px; }
}
@media (max-width: 520px) {
  .nav-right .lang-current,
  .nav-right > .btn-primary { display: none; }
}