:root {
  --primary: #1d4ed8;
  --primary-dark: #1e40af;
  --primary-light: #dbeafe;
  --accent: #0ea5e9;
  --success: #16a34a;
  --warning: #d97706;
  --danger: #dc2626;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-500: #6b7280;
  --gray-700: #374151;
  --gray-900: #111827;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 4px 16px rgba(0,0,0,.06);
  --shadow-lg: 0 4px 6px rgba(0,0,0,.07), 0 10px 40px rgba(0,0,0,.1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--gray-900);
  background: #fff;
  line-height: 1.6;
  font-size: 16px;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── NAV ── */
nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-200);
  padding: 0 24px;
}
.nav-inner {
  max-width: 1100px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  height: 60px;
}
.nav-logo {
  font-size: 1.4rem; font-weight: 800;
  color: var(--primary); letter-spacing: -.5px;
}
.nav-logo span { color: var(--accent); }
.nav-links { display: flex; gap: 28px; list-style: none; }
.nav-links a { font-size: .9rem; color: var(--gray-700); font-weight: 500; }
.nav-links a:hover { color: var(--primary); text-decoration: none; }
.nav-cta {
  background: var(--primary); color: #fff !important;
  padding: 8px 18px; border-radius: 8px; font-weight: 600;
  transition: background .2s;
}
.nav-cta:hover { background: var(--primary-dark) !important; }

/* ── HERO ── */
.hero {
  background: linear-gradient(135deg, #eff6ff 0%, #f0f9ff 50%, #f5f3ff 100%);
  padding: 72px 24px 60px;
  text-align: center;
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 900; letter-spacing: -1px;
  color: var(--gray-900); line-height: 1.15;
  margin-bottom: 20px;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.hero-sub {
  font-size: 1.15rem; color: var(--gray-500);
  max-width: 540px; margin: 0 auto 36px;
}
.trust-badges {
  display: flex; flex-wrap: wrap; gap: 12px;
  justify-content: center; margin-bottom: 48px;
}
.badge {
  display: flex; align-items: center; gap: 7px;
  background: #fff; border: 1px solid var(--gray-200);
  border-radius: 100px; padding: 7px 16px;
  font-size: .82rem; font-weight: 600; color: var(--gray-700);
  box-shadow: 0 1px 4px rgba(0,0,0,.06);
}
.badge .icon { font-size: 1rem; }
.badge.green { border-color: #bbf7d0; background: #f0fdf4; color: var(--success); }
.badge.blue  { border-color: #bfdbfe; background: #eff6ff; color: var(--primary); }

/* ── MAIN CARD ── */
.upload-section {
  padding: 0 24px 80px;
  margin-top: -32px;
}
.card {
  max-width: 780px; margin: 0 auto;
  background: #fff; border-radius: 20px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--gray-200);
  overflow: hidden;
}
.card-header {
  background: var(--primary); color: #fff;
  padding: 20px 32px;
  display: flex; align-items: center; gap: 12px;
}
.card-header h2 { font-size: 1.1rem; font-weight: 700; }
.card-header .step-num {
  background: rgba(255,255,255,.2);
  width: 28px; height: 28px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: .8rem; font-weight: 700; flex-shrink: 0;
}
.card-body { padding: 32px; }

/* ── DROPZONE ── */
.dropzone {
  border: 2px dashed var(--gray-300); border-radius: var(--radius);
  padding: 40px 24px; text-align: center; cursor: pointer;
  transition: all .2s; background: var(--gray-50);
  position: relative;
}
.dropzone:hover, .dropzone.dragover {
  border-color: var(--primary); background: var(--primary-light);
}
.dropzone .drop-icon { font-size: 2.8rem; margin-bottom: 12px; }
.dropzone h3 { font-size: 1rem; font-weight: 700; color: var(--gray-700); margin-bottom: 6px; }
.dropzone p  { font-size: .85rem; color: var(--gray-500); margin-bottom: 20px; }
.drop-buttons { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 10px 20px; border-radius: 8px; font-size: .9rem;
  font-weight: 600; border: none; cursor: pointer;
  transition: all .2s; font-family: inherit;
}
.btn-outline {
  border: 1.5px solid var(--gray-300); background: #fff; color: var(--gray-700);
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-light); }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-primary:disabled { background: var(--gray-300); cursor: not-allowed; }
.btn-lg { padding: 14px 32px; font-size: 1rem; border-radius: 10px; }

/* ── PREVIEW ── */
#preview-area { display: none; margin-top: 20px; }
#preview-area.visible { display: block; }
.preview-wrap {
  position: relative; border-radius: var(--radius);
  overflow: hidden; border: 1.5px solid var(--gray-200);
  background: var(--gray-50); max-height: 260px;
  display: flex; align-items: center; justify-content: center;
}
#preview-img { max-width: 100%; max-height: 240px; object-fit: contain; display: block; }
.preview-remove {
  position: absolute; top: 8px; right: 8px;
  background: rgba(0,0,0,.55); color: #fff; border: none;
  border-radius: 50%; width: 28px; height: 28px; font-size: 1rem;
  cursor: pointer; display: flex; align-items: center; justify-content: center;
}
.preview-name { margin-top: 8px; font-size: .82rem; color: var(--gray-500); text-align: center; }

/* ── SELECTORS ── */
.selector-group { margin-top: 24px; }
.selector-label { font-size: .82rem; font-weight: 700; color: var(--gray-500);
  text-transform: uppercase; letter-spacing: .06em; margin-bottom: 10px; }
.selector-buttons { display: flex; gap: 8px; flex-wrap: wrap; }
.sel-btn {
  padding: 8px 16px; border-radius: 8px; font-size: .88rem; font-weight: 600;
  border: 1.5px solid var(--gray-300); background: #fff; color: var(--gray-700);
  cursor: pointer; transition: all .2s; font-family: inherit;
}
.sel-btn:hover { border-color: var(--primary); color: var(--primary); }
.sel-btn.active { border-color: var(--primary); background: var(--primary); color: #fff; }

.analyze-wrap { margin-top: 28px; }

/* ── RESULTS ── */
#results-section { display: none; }
#results-section.visible { display: block; }
.results-card {
  max-width: 780px; margin: 0 auto 48px;
  background: #fff; border-radius: 20px;
  border: 1px solid var(--gray-200);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}
.results-header {
  background: linear-gradient(90deg, #1d4ed8, #0ea5e9);
  color: #fff; padding: 20px 32px;
  display: flex; align-items: center; justify-content: space-between;
}
.results-header h2 { font-size: 1.1rem; font-weight: 700; }
.results-body { padding: 28px 32px; }

/* spinner */
.spinner-wrap {
  display: flex; align-items: center; gap: 14px;
  padding: 16px 0;
}
.spinner {
  width: 24px; height: 24px;
  border: 3px solid var(--primary-light);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin .7s linear infinite;
  flex-shrink: 0;
}
@keyframes spin { to { transform: rotate(360deg); } }
.spinner-label { font-size: .92rem; color: var(--gray-500); font-style: italic; }

/* markdown output */
#output-text {
  font-size: .97rem; line-height: 1.75; color: var(--gray-700);
  min-height: 60px;
}
#output-text h1, #output-text h2, #output-text h3 {
  color: var(--gray-900); margin: 20px 0 8px; font-weight: 700;
}
#output-text h2 { font-size: 1.1rem; border-bottom: 1px solid var(--gray-200); padding-bottom: 6px; }
#output-text h3 { font-size: 1rem; }
#output-text p  { margin-bottom: 12px; }
#output-text ul, #output-text ol { padding-left: 20px; margin-bottom: 12px; }
#output-text li { margin-bottom: 4px; }
#output-text strong { color: var(--gray-900); }
#output-text code {
  background: var(--gray-100); padding: 2px 6px;
  border-radius: 4px; font-size: .88em; font-family: monospace;
}
#output-text table {
  width: 100%; border-collapse: collapse; margin-bottom: 16px; font-size: .9rem;
}
#output-text th, #output-text td {
  padding: 8px 12px; border: 1px solid var(--gray-200); text-align: left;
}
#output-text th { background: var(--gray-50); font-weight: 700; }

.disclaimer {
  margin-top: 20px; padding: 14px 18px;
  background: #fffbeb; border: 1px solid #fde68a; border-radius: 8px;
  font-size: .82rem; color: #92400e; line-height: 1.5;
}
.disclaimer strong { color: #78350f; }

.results-actions { margin-top: 20px; display: flex; gap: 10px; flex-wrap: wrap; }

/* ── HOW IT WORKS ── */
.how-section {
  background: var(--gray-50); padding: 72px 24px;
}
.section-title {
  text-align: center; font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 800; letter-spacing: -.5px; margin-bottom: 12px;
}
.section-sub { text-align: center; color: var(--gray-500); margin-bottom: 48px; max-width: 520px; margin-left: auto; margin-right: auto; }
.steps-grid {
  max-width: 900px; margin: 0 auto;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 24px;
}
.step-card {
  background: #fff; border-radius: var(--radius); padding: 28px 24px;
  box-shadow: var(--shadow); border: 1px solid var(--gray-200); text-align: center;
}
.step-number {
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--primary); color: #fff;
  font-size: 1.1rem; font-weight: 800;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 16px;
}
.step-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.step-card p  { font-size: .88rem; color: var(--gray-500); }

/* ── WHY KLARA SECTION ── */
.compare-section { padding: 72px 24px; }

/* ── PRIVACY SECTION ── */
.privacy-section {
  background: linear-gradient(135deg, #eff6ff, #f0fdf4);
  padding: 64px 24px; text-align: center;
}
.privacy-grid {
  max-width: 760px; margin: 32px auto 0;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 20px;
}
.privacy-card {
  background: #fff; border-radius: var(--radius); padding: 24px 16px;
  box-shadow: var(--shadow); border: 1px solid var(--gray-200);
}
.privacy-card .picon { font-size: 2rem; margin-bottom: 12px; }
.privacy-card h4 { font-size: .9rem; font-weight: 700; margin-bottom: 6px; }
.privacy-card p  { font-size: .82rem; color: var(--gray-500); }

/* ── FOOTER ── */
footer {
  background: var(--gray-900); color: var(--gray-300);
  padding: 40px 24px; text-align: center;
}
.footer-inner { max-width: 760px; margin: 0 auto; }
.footer-logo { font-size: 1.4rem; font-weight: 800; color: #fff; margin-bottom: 8px; }
.footer-logo span { color: var(--accent); }
.footer-tagline { font-size: .88rem; margin-bottom: 24px; }
.footer-links { display: flex; gap: 24px; justify-content: center; flex-wrap: wrap; margin-bottom: 24px; }
.footer-links a { font-size: .85rem; color: var(--gray-300); }
.footer-links a:hover { color: #fff; }
.footer-legal { font-size: .78rem; color: var(--gray-500); line-height: 1.6; }

/* ── MODAL (Impressum / Datenschutz) ── */
.modal-overlay {
  display: none; position: fixed; inset: 0;
  background: rgba(0,0,0,.5); z-index: 500;
  align-items: center; justify-content: center; padding: 20px;
}
.modal-overlay.open { display: flex; }
.modal {
  background: #fff; border-radius: 16px;
  max-width: 560px; width: 100%;
  max-height: 80vh; overflow-y: auto;
  padding: 32px; position: relative;
}
.modal h2 { font-size: 1.2rem; font-weight: 800; margin-bottom: 16px; }
.modal p  { font-size: .88rem; color: var(--gray-700); margin-bottom: 12px; line-height: 1.65; }
.modal-close {
  position: absolute; top: 16px; right: 16px;
  background: var(--gray-100); border: none; border-radius: 50%;
  width: 32px; height: 32px; font-size: 1.1rem; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
}

/* ── ERROR STATE ── */
.error-box {
  background: #fef2f2; border: 1px solid #fecaca; border-radius: 8px;
  padding: 14px 18px; color: #991b1b; font-size: .9rem;
  display: flex; align-items: flex-start; gap: 10px;
}

/* ── RESPONSIVE ── */
@media (max-width: 640px) {
  .nav-links { display: none; }
  .card-body, .results-body { padding: 20px; }
  .card-header, .results-header { padding: 16px 20px; }
  .hero { padding: 48px 16px 40px; }
  .compare-table th, .compare-table td { padding: 10px 12px; font-size: .82rem; }
}