/* ─────────────────────────────────────────────────────────────────
   GDA-Consulting — styles
   ───────────────────────────────────────────────────────────────── */

/* 1. Custom properties & reset
─────────────────────────────── */
:root {
  --bg:          #07080f;
  --bg-surface:  #0d0f1e;
  --bg-card:     #111528;
  --border:      rgba(255,255,255,.07);
  --text:        #e2e8f0;
  --text-muted:  #7e8aaf;
  --accent:      #18cb96;
  --accent-end:  #4de8b4;
  --accent-glow: rgba(24,203,150,.35);
  --radius:      1rem;
  --radius-sm:   .5rem;
  --trans:       .35s cubic-bezier(.4,0,.2,1);
  --nav-h:       68px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  line-height: 1.7;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
address { font-style: normal; }
button { cursor: pointer; border: none; background: none; font: inherit; }

/* 2. Utility
─────────────────────────────── */
.container {
  width: min(1160px, 92%);
  margin-inline: auto;
}

.gradient-text {
  background: linear-gradient(135deg, var(--accent), var(--accent-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-eyebrow {
  display: inline-block;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: .75rem;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-header h2 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.section-sub {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 540px;
  margin-inline: auto;
}

/* 3. Reveal animation
─────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .65s var(--trans), transform .65s var(--trans);
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

.delay-1 { transition-delay: .12s; }
.delay-2 { transition-delay: .24s; }
.delay-3 { transition-delay: .36s; }

/* 4. Buttons
─────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .8rem 1.75rem;
  border-radius: 100px;
  font-size: .95rem;
  font-weight: 600;
  transition: var(--trans);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-end));
  color: #fff;
  box-shadow: 0 0 24px var(--accent-glow);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 32px var(--accent-glow);
}

.btn-ghost {
  border: 1px solid var(--border);
  color: var(--text);
  background: rgba(255,255,255,.03);
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(24,203,150,.06);
  transform: translateY(-2px);
}

.btn-full { width: 100%; justify-content: center; }

/* Submit button: auto-width, centered */
.btn-submit {
  align-self: flex-start;
  padding: .75rem 2rem;
}

/* Logo image */
.logo-img-wrap {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

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

.logo-img--footer {
  height: 28px;
}

/* Cookie Banner */
.cookie-banner {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  width: min(640px, 92%);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  box-shadow: 0 8px 40px rgba(0,0,0,.5);
  transition: opacity .4s ease, transform .4s ease;
}

.cookie-banner[hidden] { display: none; }

.cookie-banner p {
  font-size: .85rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin: 0;
}

.cookie-banner p a {
  color: var(--accent);
}

.cookie-accept {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  padding: .55rem 1.25rem;
  border-radius: 100px;
  font-size: .88rem;
  font-weight: 600;
  background: linear-gradient(135deg, var(--accent), var(--accent-end));
  color: #fff;
  cursor: pointer;
  border: none;
  transition: var(--trans);
}

.cookie-accept:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 20px var(--accent-glow);
}

/* 5. Navbar
─────────────────────────────── */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 999;
  height: var(--nav-h);
  transition: background var(--trans), box-shadow var(--trans);
}

#navbar.scrolled {
  background: rgba(10,10,15,.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 var(--border);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  width: min(1160px, 92%);
  margin-inline: auto;
}

.logo {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -.01em;
}

.logo-accent {
  background: linear-gradient(135deg, var(--accent), var(--accent-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

.nav-links a {
  font-size: .9rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--trans);
}
.nav-links a:hover { color: var(--text); }

.nav-cta {
  padding: .55rem 1.4rem;
  border-radius: 100px;
  background: linear-gradient(135deg, var(--accent), var(--accent-end));
  color: #fff !important;
  font-size: .88rem;
  box-shadow: 0 0 18px var(--accent-glow);
  transition: box-shadow var(--trans), transform var(--trans) !important;
}
.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 24px var(--accent-glow) !important;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--trans);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 6. Hero
─────────────────────────────── */
#hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: var(--nav-h);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 55% at 50% -10%, rgba(24,203,150,.18) 0%, transparent 65%),
    radial-gradient(ellipse 40% 35% at 80% 60%, rgba(77,232,180,.10) 0%, transparent 55%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  padding-block: 6rem;
}

.hero-eyebrow {
  display: inline-block;
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.25rem;
}

.hero-content h1 {
  font-size: clamp(2.6rem, 6vw, 5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -.02em;
  margin-bottom: 1.75rem;
}

.hero-sub {
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  color: var(--text-muted);
  max-width: 520px;
  margin-bottom: 2.5rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.scroll-indicator {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
}
.scroll-indicator span {
  display: block;
  width: 22px;
  height: 36px;
  border: 2px solid var(--border);
  border-radius: 100px;
  position: relative;
}
.scroll-indicator span::after {
  content: '';
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  background: var(--accent);
  border-radius: 100px;
  animation: scrollDot 2s ease-in-out infinite;
}

@keyframes scrollDot {
  0%   { top: 6px; opacity: 1; }
  80%  { top: 18px; opacity: 0; }
  100% { top: 6px; opacity: 0; }
}

/* 7. Services
─────────────────────────────── */
#services {
  padding-block: 7rem;
  background: var(--bg-surface);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: border-color var(--trans), transform var(--trans), box-shadow var(--trans);
}

.service-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 8px 40px rgba(24,203,150,.12);
}

.service-icon {
  width: 48px;
  height: 48px;
  color: var(--accent);
  margin-bottom: 1.25rem;
}

.service-icon svg { width: 100%; height: 100%; }

.service-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: .6rem;
}

.service-card p {
  font-size: .92rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* 8. About
─────────────────────────────── */
#about {
  padding-block: 7rem;
  overflow: hidden;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}

/* stat cards */
.about-visual {
  position: relative;
  height: 420px;
}

.about-glow {
  position: absolute;
  inset: 10%;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.about-card {
  position: absolute;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 2rem;
  display: flex;
  flex-direction: column;
  gap: .25rem;
  transition: transform var(--trans), box-shadow var(--trans);
}
.about-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(24,203,150,.15);
}

.stat-number {
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent), var(--accent-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  white-space: nowrap;
}

.stat-label {
  font-size: .82rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.card-1 { top: 0;    left: 0;   animation: float 5s ease-in-out infinite; }
.card-2 { top: 35%;  right: 0;  animation: float 5.5s ease-in-out infinite .4s; }
.card-3 { bottom: 0; left: 15%; animation: float 6s ease-in-out infinite .8s; }

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-10px); }
}

/* about text */
.about-text { }
.about-text p {
  color: var(--text-muted);
  margin-bottom: 1rem;
  font-size: 1rem;
}

.about-list {
  margin-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: .75rem;
}

.about-list li {
  display: flex;
  align-items: center;
  gap: .75rem;
  font-size: .95rem;
}

.about-list svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: var(--accent);
}

/* 9. Contact
─────────────────────────────── */
#contact {
  padding-block: 7rem;
  background: var(--bg-surface);
}

.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 3rem;
  align-items: start;
}

/* form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: .45rem;
}

.form-group label {
  font-size: .85rem;
  font-weight: 500;
  color: var(--text-muted);
}

.form-group input,
.form-group textarea {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: .75rem 1rem;
  color: var(--text);
  font: inherit;
  font-size: .95rem;
  transition: border-color var(--trans), box-shadow var(--trans);
  outline: none;
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(108,99,255,.15);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
  opacity: .6;
}

.form-success {
  display: none;
  color: #4ade80;
  font-size: .9rem;
  text-align: center;
  animation: fadeIn .4s ease;
}
.form-success.visible { display: block; }

@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* contact info */
.contact-info {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  padding: 2rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  height: fit-content;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.contact-icon {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  background: rgba(24,203,150,.12);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
}
.contact-icon svg { width: 18px; height: 18px; }

.contact-item strong {
  display: block;
  font-size: .85rem;
  font-weight: 600;
  margin-bottom: .2rem;
}

.contact-item a,
.contact-item span {
  font-size: .9rem;
  color: var(--text-muted);
}
.contact-item a:hover { color: var(--accent); }

/* 10. Footer
─────────────────────────────── */
#footer {
  padding-block: 5rem 2.5rem;
  border-top: 1px solid var(--border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 2fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: .88rem;
  margin-top: .75rem;
  max-width: 260px;
}

.footer-links h4,
.footer-legal h4 {
  font-size: .85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.footer-links ul li + li { margin-top: .6rem; }
.footer-links a {
  font-size: .88rem;
  color: var(--text-muted);
  transition: color var(--trans);
}
.footer-links a:hover { color: var(--accent); }

.footer-legal address {
  font-size: .85rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 1rem;
}
.footer-legal address a:hover { color: var(--accent); }

.impressum-note {
  font-size: .8rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: .75rem;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  font-size: .82rem;
  color: var(--text-muted);
}

.footer-bottom a {
  color: var(--text-muted);
  transition: color var(--trans);
}
.footer-bottom a:hover { color: var(--accent); }

.footer-bottom-links {
  display: flex;
  gap: 1.5rem;
}

/* 11. Responsive
─────────────────────────────── */
@media (max-width: 1000px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .about-grid  { grid-template-columns: 1fr; gap: 3rem; }
  .about-visual { height: 320px; }
}

@media (max-width: 768px) {
  :root { --nav-h: 60px; }

  .nav-toggle { display: flex; }

  .nav-links {
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    background: rgba(10,10,15,.97);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border);
    transform: translateY(-110%);
    transition: transform var(--trans);
    z-index: 998;
  }

  .nav-links.open { transform: translateY(0); }
  .nav-links li { width: 100%; }
  .nav-links a { display: block; padding: .85rem 1.5rem; font-size: 1rem; }
  .nav-cta { margin: .5rem 1.5rem; display: inline-block; width: auto; }

  .contact-wrapper { grid-template-columns: 1fr; }
  .form-row        { grid-template-columns: 1fr; }
  .footer-grid     { grid-template-columns: 1fr; }
  .footer-bottom   { flex-direction: column; gap: .5rem; text-align: center; }

  .hero-content h1 { font-size: clamp(2.2rem, 10vw, 3.5rem); }
}

@media (max-width: 480px) {
  .services-grid { grid-template-columns: 1fr; }
  .cookie-banner { flex-direction: column; text-align: center; bottom: 1rem; padding: 1rem; }
  .stat-number { font-size: 1.6rem; }
}