/* ============================================================
   BANTEL & PARTNER AG — Design System
   Premium Communication Consulting
   ============================================================ */

/* ---------- CUSTOM PROPERTIES ---------- */
:root {
  /* Palette — Deep authority + warm neutrality */
  --color-navy:        #1a2233;
  --color-charcoal:    #2c3440;
  --color-slate:       #4a5568;
  --color-warm-white:  #f9f8f5;
  --color-cream:       #f3f0ea;
  --color-light-gray:  #eae6df;
  --color-border:      #d6d0c5;
  --color-text:        #2c3440;
  --color-text-light:  #6b7280;
  --color-accent:      #9b8b6e;
  --color-accent-hover: #b8a57a;
  --color-accent-subtle: rgba(155, 139, 110, 0.12);

  --font-display: 'Cormorant Garamond', Georgia, 'Times New Roman', serif;
  --font-body:    'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --space-xs:  0.5rem;
  --space-sm:  1rem;
  --space-md:  2rem;
  --space-lg:  4rem;
  --space-xl:  8rem;
  --space-2xl: 12rem;

  --max-width:  1400px;
  --content-gap: 5vw;

  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
  --duration-slow: 0.8s;
  --duration-med: 0.5s;
  --duration-fast: 0.25s;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--color-text);
  background: var(--color-warm-white);
  overflow-x: hidden;
}

::selection {
  background: var(--color-accent-subtle);
  color: var(--color-navy);
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

/* ---------- TYPOGRAPHY ---------- */
.section-label {
  display: block;
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--color-navy);
}

.section-lead {
  margin-top: var(--space-md);
  font-size: 1.15rem;
  color: var(--color-text-light);
  max-width: 560px;
  line-height: 1.7;
}

/* ---------- NAVIGATION ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1.25rem var(--content-gap);
  transition: background var(--duration-med) var(--ease-out-quart),
              padding var(--duration-med) var(--ease-out-quart),
              box-shadow var(--duration-med) var(--ease-out-quart);
}

.nav.scrolled {
  background: rgba(249, 248, 245, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 0.75rem var(--content-gap);
  box-shadow: 0 1px 0 var(--color-border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  z-index: 101;
}

.nav-logo-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--color-navy);
  color: var(--color-warm-white);
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  border-radius: 2px;
}

.nav-logo-text {
  display: flex;
  flex-direction: column;
}

.nav-logo-name {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--color-navy);
  line-height: 1.1;
}

.nav-logo-amp {
  font-style: italic;
  font-weight: 400;
}

.nav-logo-sub {
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nav-link {
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-slate);
  position: relative;
  padding: 0.25rem 0;
  transition: color var(--duration-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-accent);
  transition: width var(--duration-med) var(--ease-out-expo);
}

.nav-link:hover { color: var(--color-navy); }
.nav-link:hover::after { width: 100%; }

.nav-link-cta {
  color: var(--color-accent);
  padding: 0.5rem 1.25rem;
  border: 1px solid var(--color-accent);
  border-radius: 2px;
  transition: background var(--duration-fast), color var(--duration-fast);
}

.nav-link-cta::after { display: none; }
.nav-link-cta:hover {
  background: var(--color-accent);
  color: var(--color-warm-white);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 101;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--color-navy);
  transition: transform var(--duration-fast), opacity var(--duration-fast);
}

.nav-toggle.active span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ---------- HERO ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: calc(6rem + var(--space-xl)) var(--content-gap) var(--space-xl);
  background: var(--color-navy);
  color: var(--color-warm-white);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 50% at 50% 40%, rgba(155, 139, 110, 0.06) 0%, transparent 70%),
    radial-gradient(ellipse 80% 60% at 80% 80%, rgba(155, 139, 110, 0.04) 0%, transparent 60%);
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 80px 80px;
  opacity: 0.5;
}

.hero-content {
  max-width: var(--max-width);
  width: 100%;
  position: relative;
  z-index: 1;
}

.hero-quote {
  max-width: 720px;
}

.hero-quote-mark {
  font-family: var(--font-display);
  font-size: clamp(5rem, 12vw, 10rem);
  font-weight: 400;
  line-height: 0.6;
  color: var(--color-accent);
  display: block;
  opacity: 0.6;
}

.hero-quote-text {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5.5vw, 4rem);
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: var(--space-lg) 0 var(--space-md);
}

.hero-quote-text em {
  font-style: italic;
  color: var(--color-accent);
}

.hero-quote-author {
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.45);
}

.hero-divider {
  width: 60px;
  height: 1px;
  background: var(--color-accent);
  margin: var(--space-lg) 0;
  opacity: 0.5;
}

.hero-sub {
  font-size: 1.15rem;
  line-height: 1.8;
  color: rgba(255,255,255,0.7);
  max-width: 560px;
  margin-bottom: var(--space-xl);
}

.hero-pillars {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.hero-pillar {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.85rem;
  line-height: 1.5;
  color: rgba(255,255,255,0.6);
}

.hero-pillar-icon {
  color: var(--color-accent);
  font-size: 0.5rem;
  margin-top: 0.4rem;
  flex-shrink: 0;
}

.hero-scroll {
  display: flex;
  justify-content: center;
  margin-top: var(--space-xl);
}

.hero-scroll-line {
  display: block;
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, var(--color-accent), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(1); }
  50% { opacity: 0.8; transform: scaleY(1.3); transform-origin: top; }
}

/* ---------- SECTIONS COMMON ---------- */
.services,
.team,
.cases,
.network,
.contact {
  padding: var(--space-2xl) var(--content-gap);
}

.section-header {
  margin-bottom: var(--space-xl);
}

/* ---------- SERVICES ---------- */
.services {
  background: var(--color-warm-white);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1px;
  background: var(--color-border);
  max-width: var(--max-width);
  margin: 0 auto;
}

.service-card {
  background: var(--color-warm-white);
  padding: var(--space-lg);
  position: relative;
  overflow: hidden;
  transition: background var(--duration-med) var(--ease-out-quart);
}

.service-card:hover {
  background: var(--color-cream);
}

.service-card-accent {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--duration-slow) var(--ease-out-expo);
}

.service-card:hover .service-card-accent {
  transform: scaleX(1);
}

.service-card-number {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 400;
  color: var(--color-border);
  line-height: 1;
  display: block;
  margin-bottom: var(--space-sm);
  transition: color var(--duration-med);
}

.service-card:hover .service-card-number {
  color: var(--color-accent);
}

.service-card-title {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: var(--space-md);
  line-height: 1.2;
}

.service-card-desc {
  font-size: 0.95rem;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: var(--space-sm);
}

/* ---------- TEAM ---------- */
.team {
  background: var(--color-cream);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-lg);
  max-width: var(--max-width);
  margin: 0 auto;
}

.team-member {
  text-align: center;
}

.team-member-img {
  width: 140px;
  height: 140px;
  margin: 0 auto var(--space-md);
  border-radius: 50%;
  overflow: hidden;
  background: var(--color-light-gray);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--duration-med) var(--ease-out-quart);
}

.team-member:hover .team-member-img {
  transform: scale(1.05);
}

.team-member-placeholder {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 0.05em;
}

.team-member-name {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: 0.25rem;
}

.team-member-role {
  font-size: 0.8rem;
  color: var(--color-text-light);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ---------- CASES ---------- */
.cases {
  background: var(--color-warm-white);
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1px;
  background: var(--color-border);
  max-width: var(--max-width);
  margin: 0 auto;
}

.case-item {
  background: var(--color-warm-white);
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  border-left: 2px solid transparent;
  transition: background var(--duration-fast), border-color var(--duration-med);
}

.case-item:hover {
  background: var(--color-cream);
  border-left-color: var(--color-accent);
}

.case-outlet {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.case-date {
  font-size: 0.7rem;
  color: var(--color-text-light);
  order: -1;
}

.case-title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-navy);
  line-height: 1.3;
}

/* ---------- NETWORK ---------- */
.network {
  background: var(--color-cream);
}

.network-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 1px;
  background: var(--color-border);
  max-width: var(--max-width);
  margin: 0 auto;
}

.network-card {
  background: var(--color-cream);
  padding: var(--space-lg);
  transition: background var(--duration-fast);
}

.network-card:hover {
  background: var(--color-warm-white);
}

.network-card-full {
  grid-column: 1 / -1;
}

.network-card-title {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: var(--space-sm);
}

.network-card-body {
  color: var(--color-text-light);
  line-height: 1.8;
}

.network-link {
  color: var(--color-accent);
  font-weight: 500;
  border-bottom: 1px solid var(--color-accent);
  transition: opacity var(--duration-fast);
}

.network-link:hover {
  opacity: 0.7;
}

/* ---------- CONTACT ---------- */
.contact {
  background: var(--color-navy);
  color: var(--color-warm-white);
}

.contact .section-title {
  color: var(--color-warm-white);
}

.contact .section-label {
  color: var(--color-accent);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  max-width: var(--max-width);
  margin: 0 auto;
  align-items: start;
}

.contact-text {
  color: rgba(255,255,255,0.6);
  line-height: 1.8;
  margin: var(--space-md) 0 var(--space-lg);
  max-width: 440px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.contact-detail-label {
  display: block;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.25rem;
}

.contact-detail-value {
  color: rgba(255,255,255,0.7);
  line-height: 1.6;
  transition: color var(--duration-fast);
}

a.contact-detail-value:hover {
  color: var(--color-warm-white);
}

/* Form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.form-label {
  display: block;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  margin-bottom: 0.5rem;
}

.form-input {
  width: 100%;
  padding: 0.9rem 0;
  background: none;
  border: none;
  border-bottom: 1px solid rgba(255,255,255,0.15);
  color: var(--color-warm-white);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 300;
  transition: border-color var(--duration-fast);
  outline: none;
  border-radius: 0;
}

.form-input:focus {
  border-bottom-color: var(--color-accent);
}

.form-input::placeholder {
  color: rgba(255,255,255,0.3);
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
  line-height: 1.6;
}

.form-submit {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  align-self: flex-start;
  padding: 0.9rem 2rem;
  background: none;
  border: 1px solid var(--color-accent);
  color: var(--color-accent);
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background var(--duration-fast), color var(--duration-fast), gap var(--duration-fast);
  margin-top: var(--space-sm);
  border-radius: 2px;
}

.form-submit:hover {
  background: var(--color-accent);
  color: var(--color-warm-white);
  gap: 1.25rem;
}

.form-submit-arrow {
  transition: transform var(--duration-fast);
}

.form-submit:hover .form-submit-arrow {
  transform: translateX(4px);
}

.form-success {
  color: var(--color-accent);
  font-size: 0.9rem;
  margin-top: var(--space-sm);
}

/* ---------- FOOTER ---------- */
.footer {
  padding: var(--space-lg) var(--content-gap);
  background: var(--color-navy);
  border-top: 1px solid rgba(255,255,255,0.06);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.footer-brand {
  display: flex;
  flex-direction: column;
}

.footer-logo {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: rgba(255,255,255,0.6);
}

.footer-tagline {
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.footer-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.75rem;
  color: rgba(255,255,255,0.35);
  flex-wrap: wrap;
}

.footer-link {
  transition: color var(--duration-fast);
}

.footer-link:hover {
  color: rgba(255,255,255,0.6);
}

.footer-dot {
  opacity: 0.3;
}

/* ---------- REVEAL ANIMATIONS ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--duration-slow) var(--ease-out-quart),
              transform var(--duration-slow) var(--ease-out-quart);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- MOBILE ---------- */
@media (max-width: 900px) {
  :root {
    --space-xl: 5rem;
    --space-2xl: 7rem;
    --content-gap: 6vw;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: min(100%, 320px);
    height: 100vh;
    height: 100dvh;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 2rem;
    padding: var(--space-xl) var(--space-md);
    background: var(--color-navy);
    transition: right var(--duration-med) var(--ease-out-expo);
    z-index: 100;
  }

  .nav-links.active {
    right: 0;
  }

  .nav-link {
    color: rgba(255,255,255,0.65);
    font-size: 1rem;
  }

  .nav-link:hover { color: var(--color-warm-white); }

  .nav-link-cta {
    color: var(--color-accent);
    border-color: var(--color-accent);
  }

  .nav-link-cta:hover {
    background: var(--color-accent);
    color: var(--color-warm-white);
  }

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

  .contact-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

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

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

  .hero-quote-mark {
    font-size: clamp(4rem, 15vw, 6rem);
  }

  .hero-pillars {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 600px) {
  .hero-pillars {
    grid-template-columns: 1fr;
  }

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

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

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}