/* ==========================================================================
   Math Management Partners – Stylesheet v3
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=DM+Serif+Display&family=Inter:wght@400;500;600&display=swap');

:root {
  /* Brand & Palette */
  --ink:          #0D1117;
  --navy:         #003579;
  --navy-light:   #1A5FC8;
  --navy-bright:  #5199E0;
  --navy-dim:     rgba(0, 53, 121, 0.08);
  --navy-border:  rgba(0, 53, 121, 0.18);

  /* Surfaces */
  --bg:           #FAFBFD;
  --bg-alt:       #EEF2F9;
  --white:        #FFFFFF;

  /* Text */
  --text:         #1A2035;
  --muted:        #4D5E7A;
  --border:       #DDE3F0;

  /* Layout */
  --container-width: 1140px;
  --section-padding: 5rem;
  --radius:          4px;
  --header-height:   68px;

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(0,0,0,.06);
  --shadow-md:  0 4px 16px rgba(0,0,0,.10);
  --shadow-lg:  0 12px 36px rgba(0,0,0,.13);

  --transition: 200ms ease;
}

/* ---- Reset & Base ---- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: 'Inter', -apple-system, sans-serif;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
}

img { max-width: 100%; display: block; }

/* ---- Skip link (accessibility) ---- */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  background: var(--navy);
  color: var(--white);
  padding: 0.5rem 1.1rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.875rem;
  text-decoration: none;
  z-index: 200;
  transition: top var(--transition);
}
.skip-link:focus { top: 1rem; }

/* ---- Global focus style ---- */
:focus-visible {
  outline: 2px solid var(--navy);
  outline-offset: 3px;
  border-radius: var(--radius);
}

/* ---- Typography ---- */
h1, h2 {
  font-family: 'DM Serif Display', Georgia, serif;
  font-weight: 400;
  line-height: 1.15;
  margin: 0;
  text-wrap: balance;
}

h3, h4 {
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  line-height: 1.3;
  margin: 0;
}

h1 { font-size: clamp(2.4rem, 5.5vw, 3.75rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.5rem); margin-bottom: 0.75rem; }
h3 { font-size: 1rem; margin-bottom: 0.5rem; }

p { margin: 0 0 1rem; }
a { color: var(--navy); }

.section-label {
  display: inline-block;
  font-family: 'Inter', sans-serif;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--navy);
  margin-bottom: 0.625rem;
}

.section-header { margin-bottom: 2.5rem; }

/* ---- Layout ---- */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Anchor offset for sticky header */
section[id] { scroll-margin-top: var(--header-height); }

/* ---- Header ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--transition);
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.logo img { height: 46px; width: auto; }

.main-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.main-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: color var(--transition);
}

.main-nav a:hover { color: var(--navy); }

.main-nav a.nav-cta {
  background: var(--navy);
  color: var(--white);
  padding: 0.475rem 1.1rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.85rem;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  transition: background var(--transition), box-shadow var(--transition);
}

.main-nav a.nav-cta:hover {
  background: var(--navy-light);
  box-shadow: 0 4px 16px rgba(0,53,121,.28);
  color: var(--white);
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  margin: 0 auto;
  border-radius: 1px;
  transition: transform var(--transition), opacity var(--transition);
}

/* ---- Hero ---- */
.hero {
  background: var(--ink);
  color: var(--white);
  padding: 7rem 0 6rem;
  position: relative;
  overflow: hidden;
}

/* Ghost CFO watermark — signature element */
.hero-ghost {
  position: absolute;
  right: -0.06em;
  top: 50%;
  transform: translateY(-50%);
  font-family: 'DM Serif Display', serif;
  font-size: clamp(12rem, 28vw, 30rem);
  color: rgba(255,255,255,0.032);
  line-height: 0.9;
  pointer-events: none;
  user-select: none;
  z-index: 0;
  white-space: nowrap;
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero-inner { max-width: 700px; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  background: rgba(255,255,255,0.10);
  border: 1px solid rgba(255,255,255,0.20);
  border-radius: var(--radius);
  padding: 0.35rem 0.9rem;
  font-family: 'Inter', sans-serif;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.88);
  margin-bottom: 1.5rem;
}

.hero h1 {
  color: var(--white);
  margin-bottom: 1.25rem;
}

.hero-subline {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.68);
  margin-bottom: 2.25rem;
  max-width: 580px;
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 2.75rem;
}

.hero-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.hero-tags span {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  padding: 0.25rem 0.8rem;
  font-family: 'Inter', sans-serif;
  font-size: 0.76rem;
  color: rgba(255,255,255,0.58);
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.75rem;
  border-radius: var(--radius);
  text-decoration: none;
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  transition: background var(--transition), color var(--transition),
              box-shadow var(--transition), transform 150ms ease;
}

.btn:hover { transform: translateY(-1px); }

.btn-primary {
  background: var(--navy);
  color: var(--white);
  box-shadow: 0 4px 16px rgba(0,53,121,.22);
}
.btn-primary:hover {
  background: var(--navy-light);
  box-shadow: 0 6px 22px rgba(0,53,121,.36);
  color: var(--white);
}

.btn-ghost {
  background: transparent;
  color: rgba(255,255,255,0.78);
  border: 1px solid rgba(255,255,255,0.22);
}
.btn-ghost:hover {
  background: rgba(255,255,255,0.07);
  border-color: rgba(255,255,255,0.48);
  color: var(--white);
}

.btn-secondary {
  background: var(--white);
  color: var(--navy);
  box-shadow: 0 4px 16px rgba(0,0,0,.10);
}
.btn-secondary:hover {
  background: #EEF4FF;
  box-shadow: 0 6px 22px rgba(0,0,0,.15);
  color: var(--navy);
}

/* ---- Sections ---- */
.section { padding: var(--section-padding) 0; }

.section-alt { background: var(--bg-alt); }

.section-dark {
  background: var(--ink);
  color: var(--white);
  text-align: center;
}

.section-dark h2 { color: var(--white); margin-bottom: 1rem; }

.section-dark p {
  color: rgba(255,255,255,0.68);
  max-width: 540px;
  margin: 0 auto 2rem;
}

/* ---- Über uns ---- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: start;
}

.about-content p { color: var(--muted); }
.about-content p:last-child { margin-bottom: 0; }

.about-highlights {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--border);
}

.highlight-item {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--border);
}

.highlight-icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  background: var(--navy-dim);
  border: 1px solid var(--navy-border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--navy);
}

.highlight-text strong {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.2rem;
}

.highlight-text span {
  font-size: 0.84rem;
  color: var(--muted);
}

/* ---- Cards (Leistungen) ---- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-top: 2px solid transparent;
  border-radius: var(--radius);
  padding: 2rem;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition),
              border-top-color var(--transition), box-shadow var(--transition),
              transform 150ms ease;
}

.card:hover {
  background: var(--ink);
  border-color: var(--ink);
  border-top-color: var(--navy-bright);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.card:hover h3 { color: var(--white); }
.card:hover .card-desc { color: rgba(255,255,255,0.6); }
.card:hover .card-icon {
  background: rgba(81,153,224,0.18);
  border-color: rgba(81,153,224,0.35);
  color: var(--navy-bright);
}

.card-icon {
  width: 42px;
  height: 42px;
  background: var(--navy-dim);
  border: 1px solid var(--navy-border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--navy);
  margin-bottom: 1.25rem;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}

.card h3 {
  color: var(--text);
  margin-bottom: 0.625rem;
  transition: color var(--transition);
}

.card-desc {
  color: var(--muted);
  font-size: 0.875rem;
  line-height: 1.65;
  margin: 0;
  transition: color var(--transition);
}

/* ---- Team ---- */
.team-grid {
  display: flex;
  gap: 1.5rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

.team-member {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex: 1;
  min-width: 160px;
}

.team-photo-wrap {
  width: 68px;
  height: 68px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
  border: 2px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.team-photo-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
}

.team-info strong {
  display: block;
  font-size: 0.875rem;
  color: var(--text);
  margin-bottom: 0.1rem;
}

.team-info span {
  font-size: 0.78rem;
  color: var(--muted);
}

/* ---- Referenzen Carousel ---- */
.carousel-outer {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.carousel-btn {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--white);
  color: var(--navy);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  padding: 0;
  box-shadow: var(--shadow-sm);
  transition: background var(--transition), color var(--transition), box-shadow var(--transition), transform 150ms ease;
}

.carousel-btn:hover {
  background: var(--navy);
  color: var(--white);
  box-shadow: var(--shadow-md);
  transform: scale(1.06);
}

.carousel-wrapper {
  overflow: hidden;
  flex: 1;
  min-width: 0;
}

.carousel-track {
  display: flex;
  gap: 1.5rem;
  transform: translateX(0);
  will-change: transform;
}

.ref-card {
  flex: none;
  background: var(--white);
  border: 1px solid var(--border);
  border-top: 2px solid var(--navy);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
}

.ref-logo-area {
  background: var(--bg-alt);
  height: 110px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.25rem 2rem;
  flex-shrink: 0;
}

.ref-logo-area img {
  max-height: 52px;
  max-width: 160px;
  width: auto;
  object-fit: contain;
}

.ref-body {
  padding: 1.25rem 1.5rem 1.5rem;
  flex: 1;
}

.ref-company {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--navy);
  margin-bottom: 0.4rem;
}

.ref-desc {
  font-size: 0.82rem;
  color: var(--muted);
  line-height: 1.65;
  margin: 0;
}

/* ---- Footer ---- */
.site-footer {
  background: #080C12;
  color: rgba(255,255,255,0.42);
  font-size: 0.875rem;
  border-top: 1px solid rgba(255,255,255,0.05);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.75rem 1.5rem;
}

.footer-inner p { margin: 0; }

.footer-nav a {
  color: rgba(255,255,255,0.42);
  text-decoration: none;
  margin-left: 1.5rem;
  transition: color var(--transition);
}

.footer-nav a:hover { color: var(--white); }

/* ---- Legal pages ---- */
.legal-content {
  padding: var(--section-padding) 0;
  max-width: 760px;
}

.legal-content h1 { font-size: 2rem; margin-bottom: 1.5rem; }
.legal-content h2 { font-size: 1.25rem; margin-top: 2rem; }
.legal-content a { color: var(--navy); }

/* ---- Hero page-load animations ---- */
@keyframes heroFadeUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}

.hero-badge   { animation: heroFadeUp 0.7s  cubic-bezier(0.22, 1, 0.36, 1) 0.10s both; }
.hero h1      { animation: heroFadeUp 0.85s cubic-bezier(0.22, 1, 0.36, 1) 0.22s both; }
.hero-subline { animation: heroFadeUp 0.80s cubic-bezier(0.22, 1, 0.36, 1) 0.38s both; }
.hero-actions { animation: heroFadeUp 0.75s cubic-bezier(0.22, 1, 0.36, 1) 0.50s both; }
.hero-tags    { animation: heroFadeUp 0.70s cubic-bezier(0.22, 1, 0.36, 1) 0.62s both; }

/* ---- Scroll fade-in ---- */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.75s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.75s cubic-bezier(0.22, 1, 0.36, 1);
}

.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-delay-1 { transition-delay: 0.12s; }
.fade-in-delay-2 { transition-delay: 0.24s; }
.fade-in-delay-3 { transition-delay: 0.36s; }
.fade-in-delay-4 { transition-delay: 0.48s; }

/* ---- Reduced motion ---- */
@media (prefers-reduced-motion: reduce) {
  .hero-badge, .hero h1, .hero-subline, .hero-actions, .hero-tags {
    animation: none;
  }
  .fade-in { opacity: 1; transform: none; transition: none; }
  .btn:hover { transform: none; }
  .card:hover { transform: none; }
  html { scroll-behavior: auto; }
}

/* ---- Responsive ---- */
@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; gap: 2.5rem; }
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }

  .main-nav {
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 0 1.5rem;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s ease;
    box-shadow: var(--shadow-md);
  }

  .main-nav.is-open { max-height: 400px; }

  .main-nav a {
    color: var(--muted);
    width: 100%;
    padding: 0.9rem 0;
    border-bottom: 1px solid var(--border);
  }

  .main-nav a:hover { color: var(--navy); }

  .main-nav a.nav-cta {
    margin: 0.85rem 0;
    border-radius: var(--radius);
    text-align: center;
    border-bottom: none;
    color: var(--white);
  }

  .hero { padding: 5rem 0 4rem; }
  .hero-ghost { display: none; }
  .hero-actions { flex-direction: column; align-items: flex-start; }

  :root { --section-padding: 3.5rem; }
}

@media (max-width: 480px) {
  .hero-actions .btn { width: 100%; justify-content: center; }
}