/* ============================================================
   RIV GmbH – Apple Human Interface Guidelines inspired design
   Principles: Clarity · Deference · Depth
   ============================================================ */

/* Arial throughout – no external font import */

/* ── CSS Variables (Apple System Palette) ─────────────────── */
:root {
  --color-bg:           #ffffff;
  --color-bg-secondary: #f5f5f7;
  --color-bg-tertiary:  #fafafa;
  --color-surface:      rgba(255,255,255,0.82);
  --color-text-primary: #1d1d1f;
  --color-text-secondary:#6e6e73;
  --color-text-tertiary: #aeaeb2;
  --color-accent:        #1d3a8a;   /* RIV brand blue */
  --color-accent-hover:  #152d6e;
  --color-accent-light:  rgba(29,58,138,0.08);
  --color-border:        rgba(0,0,0,0.08);
  --color-border-strong: rgba(0,0,0,0.14);
  --color-shadow-sm:     0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --color-shadow-md:     0 4px 16px rgba(0,0,0,0.08), 0 1px 4px rgba(0,0,0,0.04);
  --color-shadow-lg:     0 12px 40px rgba(0,0,0,0.10), 0 2px 8px rgba(0,0,0,0.05);

  --radius-sm:  8px;
  --radius-md:  12px;
  --radius-lg:  18px;
  --radius-xl:  24px;

  --font-display: Arial, Helvetica, sans-serif;
  --font-body:    Arial, Helvetica, sans-serif;

  --nav-height: 64px;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Reduced Motion ───────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ── Container ────────────────────────────────────────────── */
.container {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Navigation ───────────────────────────────────────────── */
.navbar {
  height: var(--nav-height);
  background: var(--color-surface);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 200;
  transition: box-shadow var(--transition);
}

.navbar .container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo img {
  height: 36px;
  width: auto;
  display: block;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 0;
}

.nav-menu a {
  display: block;
  padding: 8px 14px;
  text-decoration: none;
  font-size: 14px;
  font-weight: 400;
  color: var(--color-text-primary);
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
  letter-spacing: -0.01em;
}

.nav-menu a:hover {
  color: var(--color-accent);
  background: var(--color-accent-light);
}

.nav-menu a.active {
  color: var(--color-accent);
  font-weight: 500;
}

/* ── Mobile Nav Toggle ────────────────────────────────────── */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  border: none;
  background: none;
  border-radius: var(--radius-sm);
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--color-text-primary);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

/* ── Hero Section ─────────────────────────────────────────── */
.hero {
  padding: 96px 0 104px;
  background: var(--color-bg-secondary);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse 60% 50% at 80% 20%, rgba(29,58,138,0.06) 0%, transparent 60%),
    radial-gradient(ellipse 40% 60% at 10% 80%, rgba(29,58,138,0.04) 0%, transparent 50%);
  pointer-events: none;
}

.hero .container {
  position: relative;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 20px;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  font-weight: 400;
  color: var(--color-text-primary);
  line-height: 1.18;
  letter-spacing: -0.02em;
  margin-bottom: 28px;
  max-width: 700px;
}

.hero-text {
  font-size: 19px;
  color: var(--color-text-secondary);
  max-width: 620px;
  line-height: 1.75;
  font-weight: 300;
}

/* ── Content Section ──────────────────────────────────────── */
.content {
  padding: 72px 0 96px;
}

/* ── Typography in Content ────────────────────────────────── */
.content h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 400;
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 32px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-border);
}

.content h3 {
  font-size: 21px;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-top: 48px;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.content h4 {
  font-size: 16px;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-top: 28px;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  font-size: 12px;
  letter-spacing: 0.05em;
}

.content p {
  font-size: 16px;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
  line-height: 1.8;
}

.content a {
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition);
}

.content a:hover {
  border-bottom-color: var(--color-accent);
}

/* Back link */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--color-accent) !important;
  text-decoration: none !important;
  border: none !important;
  margin-bottom: 32px;
  font-weight: 500;
  transition: gap var(--transition);
}

.back-link::before {
  content: '←';
  transition: transform var(--transition);
}

.back-link:hover::before {
  transform: translateX(-3px);
}

/* Inline lists (bullet points in p tags) */
.content p:has(> br) {
  line-height: 2;
}

/* ── Info Card ────────────────────────────────────────────── */
.info-card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  margin-bottom: 32px;
}

.info-card p {
  margin: 0;
  font-size: 15px;
  color: var(--color-text-primary);
}

/* ── Angebote Grid ────────────────────────────────────────── */
.angebote-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
  margin-top: 32px;
}

.angebot-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
  cursor: default;
}

.angebot-card:hover {
  box-shadow: var(--color-shadow-md);
  transform: translateY(-2px);
  border-color: var(--color-border-strong);
}

.angebot-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-top: 0;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
  line-height: 1.35;
}

.angebot-card p {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
}

/* ── Button ───────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background-color: var(--color-accent);
  color: #fff !important;
  padding: 10px 20px;
  border: none;
  border-radius: 980px; /* Apple pill button */
  font-size: 14px;
  font-weight: 500;
  font-family: var(--font-body);
  cursor: pointer;
  text-decoration: none !important;
  border-bottom: none !important;
  letter-spacing: -0.01em;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  min-height: 44px; /* Apple touch target */
}

.btn:hover {
  background-color: var(--color-accent-hover);
  transform: scale(1.02);
  box-shadow: 0 4px 12px rgba(29,58,138,0.25);
}

.btn:active {
  transform: scale(0.98);
}

/* ── Contact Info ─────────────────────────────────────────── */
.contact-info {
  margin-top: 0;
}

.contact-card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 36px 40px;
  max-width: 480px;
}

.contact-card h3 {
  font-size: 13px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--color-text-tertiary);
  margin-top: 0;
  margin-bottom: 20px;
}

.contact-card p {
  font-size: 16px;
  margin-bottom: 6px;
  color: var(--color-text-primary);
}

.contact-card .divider {
  height: 1px;
  background: var(--color-border);
  margin: 20px 0;
}

.contact-card a {
  color: var(--color-accent);
  text-decoration: none;
  font-weight: 500;
  border: none !important;
}

.contact-card a:hover {
  text-decoration: underline;
}

/* ── Section Intro ────────────────────────────────────────── */
.section-intro {
  font-size: 19px !important;
  color: var(--color-text-secondary) !important;
  line-height: 1.7 !important;
  max-width: 600px;
  margin-bottom: 40px !important;
  font-weight: 300 !important;
}

/* ── Interest CTA ─────────────────────────────────────────── */
.cta-block {
  margin-top: 56px;
  padding: 36px 40px;
  background: var(--color-bg-secondary);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
}

.cta-block h3 {
  margin-top: 0;
  font-size: 21px;
}

.cta-block a {
  color: var(--color-accent);
}

/* ── Footer ───────────────────────────────────────────────── */
footer {
  background-color: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  padding: 48px 0 32px;
  margin-top: 0;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
  text-align: center;
}

.footer-logo img {
  height: 30px;
  width: auto;
  opacity: 0.75;
  transition: opacity var(--transition);
}

.footer-logo img:hover {
  opacity: 1;
}

.footer-menu {
  list-style: none;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 4px 8px;
}

.footer-menu a {
  display: inline-block;
  padding: 4px 10px;
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 13px;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}

.footer-menu a:hover {
  color: var(--color-text-primary);
  background: var(--color-border);
}

.copyright {
  color: var(--color-text-tertiary);
  font-size: 13px;
}

/* ── Immowelt Widget Override ─────────────────────────────── */
#iwModule {
  margin-top: 24px;
}

#iwdigetinfo {
  font-size: 11px;
  color: var(--color-text-tertiary);
  margin-top: 12px;
}

#iwdigetinfo a {
  color: var(--color-text-tertiary);
}

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 768px) {
  .container { padding: 0 20px; }

  .nav-toggle { display: flex; }

  .nav-menu {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0; right: 0;
    background: var(--color-surface);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    gap: 0;
    padding: 12px 16px;
  }

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

  .nav-menu a {
    padding: 12px 14px;
    font-size: 16px;
  }

  .hero { padding: 64px 0 72px; }
  .hero h1 { font-size: 2rem; }
  .hero-text { font-size: 17px; }

  .content { padding: 48px 0 72px; }
  .content h2 { font-size: 1.8rem; margin-bottom: 24px; }
  .content h3 { font-size: 18px; margin-top: 36px; }

  .contact-card { padding: 28px 24px; }
  .cta-block { padding: 28px 24px; }

  .angebote-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 1.75rem; }
  .footer-menu { gap: 2px 4px; }
}