/* ============================================
   NOSTARA GmbH – Ultra Modern Single Page
   Digital Agency Style | High-End Dark Mode
   ============================================ */

:root {
  --color-primary: #ffc800;
  --color-bg: #000000;
  --color-card: #0a0a0a;
  --color-text: #ffffff;
  --color-text-dim: #888888;
  --color-border: rgba(255, 255, 255, 0.08);
  
  --font-main: 'Inter', sans-serif;
  --container: 1400px;
  --transition: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Base & Reset */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { 
  font-family: var(--font-main); 
  background: var(--color-bg); 
  color: var(--color-text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Layout Helpers */
.container { max-width: var(--container); margin: 0 auto; padding: 0 4rem; }
section { padding: 12rem 0; position: relative; }

/* Typography */
h1, h2, h3 { font-weight: 800; letter-spacing: -0.04em; line-height: 1; }
.display-large { font-size: clamp(4rem, 12vw, 10rem); }
.display-medium { font-size: clamp(2.5rem, 6vw, 5rem); }

/* Header */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 2rem 0;
  transition: var(--transition);
}
.linkedin-icon { color: #ffffff; display: flex; align-items: center; transition: var(--transition); }
.linkedin-icon:hover { color: var(--color-primary); }
.linkedin-icon:visited { color: #ffffff; }
.site-header.scrolled {
  padding: 1.2rem 0;
  background: rgba(0,0,0,0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
}

.logo-wrap {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}
.logo-symbol {
  height: 24px;
  width: auto;
}
.logo-text {
  color: #fff;
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.header-inner { display: flex; justify-content: space-between; align-items: center; }
.nav-links { display: flex; gap: 3rem; }
.nav-links a { 
  font-size: 0.875rem; font-weight: 500; color: var(--color-text-dim); 
  text-transform: uppercase; letter-spacing: 0.1em;
  text-decoration: none;
}
.nav-links a:visited { color: var(--color-text-dim); }
.nav-links a:hover, .nav-links a.active { color: var(--color-primary); }
.nav-links a:hover, .nav-links a.active { color: var(--color-primary); }

/* Hero */
.hero { 
  height: 100vh; 
  display: flex; 
  align-items: center; 
  padding-top: 100px;
}
.hero-content { max-width: 1000px; }
.hero-tagline { 
  color: var(--color-primary); 
  font-size: 1.25rem; 
  font-weight: 600; 
  margin-bottom: 2rem; 
  display: block;
}
.hero-desc { 
  font-size: 1.5rem; 
  color: var(--color-text-dim); 
  margin-top: 3rem; 
  max-width: 600px;
  line-height: 1.6;
}

/* Ansatz Grid */
.ansatz-grid { 
  display: grid; 
  grid-template-columns: repeat(3, 1fr); 
  gap: 1px; 
  background: var(--color-border);
  margin-top: 4rem;
}
.ansatz-item { 
  background: var(--color-bg); 
  padding: 5rem 3rem;
  transition: var(--transition);
}
.ansatz-item:hover { background: var(--color-card); }
.ansatz-num { color: var(--color-primary); font-size: 0.875rem; font-weight: 700; margin-bottom: 2rem; display: block; }
.ansatz-item h3 { font-size: 2rem; margin-bottom: 1.5rem; }
.ansatz-item p { color: var(--color-text-dim); font-size: 1.125rem; }

/* Berater Section */
.team-grid { 
  display: grid; 
  grid-template-columns: repeat(3, 1fr); 
  gap: 2rem; 
  margin-top: 6rem;
}
.team-card { 
  position: relative; 
  border-radius: 4px; 
  overflow: hidden;
  cursor: pointer;
}
.team-img { 
  width: 100%; 
  aspect-ratio: 3/4; 
  object-fit: cover; 
  filter: grayscale(1) brightness(0.7); 
  transition: var(--transition);
}
.team-card:hover .team-img { filter: grayscale(0) brightness(1); transform: scale(1.05); }
.team-info { 
  position: absolute; 
  bottom: 0; left: 0; right: 0; 
  padding: 2.5rem;
  background: linear-gradient(to top, rgba(0,0,0,0.9), transparent);
}
.team-info h3 { font-size: 1.75rem; color: #ffffff; }
.team-info p { color: var(--color-primary); font-weight: 600; margin-top: 0.5rem; }

/* Contact */
.contact-flex { display: flex; gap: 8rem; margin-top: 4rem; }
.contact-text { flex: 1; }
.contact-form-wrap { flex: 1; background: var(--color-card); padding: 4rem; border-radius: 4px; }
.input-group { margin-bottom: 2.5rem; position: relative; }
.input-group input, .input-group textarea {
  width: 100%; background: transparent; border: none; border-bottom: 1px solid var(--color-border);
  padding: 1rem 0; color: #fff; font-size: 0.9375rem; font-family: inherit;
  transition: var(--transition);
}
.captcha-text { font-size: 0.875rem; color: var(--color-primary); font-weight: 700; }
.input-group label { position: absolute; top: 1rem; left: 0; color: var(--color-text-dim); transition: var(--transition); pointer-events: none; }
.input-group input:focus ~ label, .input-group input:valid ~ label,
.input-group textarea:focus ~ label, .input-group textarea:valid ~ label {
  top: -1.5rem; font-size: 0.75rem; color: var(--color-primary);
}
.input-group input:focus, .input-group textarea:focus { border-color: var(--color-primary); outline: none; }

.btn-modern {
  background: var(--color-primary); color: #000; padding: 1.5rem 3rem; border: none;
  font-weight: 700; font-size: 1rem; text-transform: uppercase; letter-spacing: 0.1em;
  cursor: pointer; transition: var(--transition); width: 100%;
}
.btn-modern:hover { background: #fff; transform: translateY(-5px); }

/* Footer */
.site-footer { padding: 4rem 0; border-top: 1px solid var(--color-border); }
.footer-wrap { display: flex; justify-content: space-between; align-items: center; }
.footer-legal a { color: var(--color-text-dim); font-size: 0.875rem; margin-left: 2rem; }
.footer-legal a:hover { color: #fff; }

/* Animations */
[data-reveal] { opacity: 0; transform: translateY(40px); transition: 1.2s cubic-bezier(0.16, 1, 0.3, 1); }
[data-reveal].revealed { opacity: 1; transform: translateY(0); }

/* Responsive */
@media (max-width: 1024px) {
  .container { padding: 0 2rem; }
  .ansatz-grid, .team-grid, .contact-flex { grid-template-columns: 1fr; gap: 3rem; }
  .contact-flex { flex-direction: column; }
}
@media (max-width: 768px) {
  .nav-links { display: none; }
  section { padding: 8rem 0; }
}