/* T-Alpha GmbH Corporate Design – Webforms */
:root {
  --ta-blue: #3b3e90;
  --ta-blue-dark: #2d3070;
  --ta-blue-light: #5558b0;
  --ta-blue-pale: #eeeffe;
  --ta-gray: #4d4d4d;
  --ta-gray-light: #f5f6fa;
  --ta-gray-mid: #e0e1f0;
  --ta-white: #ffffff;
  --ta-shadow: 0 4px 24px rgba(59, 62, 144, 0.12);
  --ta-border-radius: 8px;
}

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

body {
  font-family: 'Inter', 'Segoe UI', Roboto, sans-serif;
  background: linear-gradient(135deg, #3b3e90 0%, #2d3070 100%);
  min-height: 100vh;
  padding: 20px;
  color: #333;
  line-height: 1.6;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  background: #fff;
  border-radius: 12px;
  box-shadow: var(--ta-shadow);
  overflow: hidden;
}

header {
  background: linear-gradient(135deg, #3b3e90 0%, #2d3070 100%);
  color: #fff;
  padding: 28px 40px;
  position: relative;
}

header .header-inner {
  display: flex;
  align-items: center;
  gap: 20px;
}

header .header-logo {
  height: 44px;
  width: auto;
  filter: brightness(0) invert(1);
  flex-shrink: 0;
}

header .header-text h1 {
  font-size: 1.8em;
  font-weight: 700;
  margin: 0 0 4px 0;
}

header .header-text .subtitle {
  font-size: 0.9em;
  opacity: 0.85;
  margin: 0;
}

.back-link {
  position: absolute;
  top: 20px;
  left: 20px;
  color: #fff;
  text-decoration: none;
  font-size: 1.5em;
  opacity: 0.85;
  transition: opacity 0.2s;
}
.back-link:hover { opacity: 1; }

.content { padding: 40px; }

.intro {
  background: var(--ta-blue-pale);
  border-left: 4px solid var(--ta-blue);
  padding: 20px;
  margin-bottom: 40px;
  border-radius: 4px;
}
.intro h2 { color: var(--ta-blue); margin-bottom: 10px; }

.section {
  margin-bottom: 30px;
  padding: 25px;
  border: 1.5px solid var(--ta-gray-mid);
  border-radius: var(--ta-border-radius);
  background: var(--ta-gray-light);
}

.section h2 {
  color: var(--ta-blue);
  margin-bottom: 18px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--ta-blue);
  font-size: 1.15em;
}

.section h3 {
  color: var(--ta-gray);
  margin-top: 20px;
  margin-bottom: 12px;
  font-size: 1.05em;
}

.form-group { margin-bottom: 18px; }

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--ta-gray);
  font-size: 0.95em;
}

.form-group input[type="text"],
.form-group input[type="datetime-local"],
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid #d0d1e8;
  border-radius: 6px;
  font-size: 14px;
  font-family: inherit;
  background: #fff;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--ta-blue);
  box-shadow: 0 0 0 3px rgba(59,62,144,0.10);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

/* Buttons */
button, .btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  border: none;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
}

.btn-primary, button[onclick], button.primary {
  background: var(--ta-blue);
  color: #fff;
}
.btn-primary:hover, button[onclick]:hover, button.primary:hover {
  background: var(--ta-blue-dark);
}

.btn-secondary {
  background: var(--ta-gray-mid);
  color: var(--ta-gray);
}
.btn-secondary:hover { background: #c8cadf; }

/* Tool Cards (index.html) */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  margin-bottom: 40px;
}

.tool-card {
  background: #fff;
  border: 2px solid var(--ta-gray-mid);
  border-radius: var(--ta-border-radius);
  padding: 28px;
  transition: all 0.25s ease;
  text-decoration: none;
  color: inherit;
  display: block;
}
.tool-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(59,62,144,0.15);
  border-color: var(--ta-blue);
}
.tool-card .icon { font-size: 2.5em; margin-bottom: 14px; }
.tool-card h3 { color: #333; margin-bottom: 8px; font-size: 1.3em; }
.tool-card p { color: #666; margin-bottom: 12px; font-size: 0.95em; }
.tool-card .features { list-style: none; padding: 0; }
.tool-card .features li {
  padding: 4px 0;
  color: #555;
  font-size: 0.88em;
}
.tool-card .features li::before {
  content: "✓ ";
  color: var(--ta-blue);
  font-weight: bold;
}

/* Progress / Status */
.progress-bar { background: var(--ta-gray-mid); border-radius: 4px; height: 8px; }
.progress-fill { background: var(--ta-blue); border-radius: 4px; height: 100%; transition: width 0.3s; }

/* Tooltips */
.tooltip {
  display: inline-block;
  width: 18px; height: 18px;
  background: var(--ta-blue);
  color: #fff;
  border-radius: 50%;
  text-align: center;
  line-height: 18px;
  font-size: 12px;
  margin-left: 5px;
  cursor: help;
}

/* Checkboxes */
input[type="checkbox"] { accent-color: var(--ta-blue); }

/* Code blocks */
pre, code {
  background: #f0f1f8;
  border: 1px solid var(--ta-gray-mid);
  border-radius: 4px;
}
pre { padding: 12px 16px; overflow-x: auto; }
code { padding: 2px 6px; font-size: 0.9em; }

/* Copy button */
.copy-btn {
  background: var(--ta-blue);
  color: #fff;
  border: none;
  padding: 6px 14px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
}
.copy-btn:hover { background: var(--ta-blue-dark); }

/* Alert / Warning boxes */
.alert { padding: 14px 18px; border-radius: 6px; margin-bottom: 16px; border-left: 4px solid; }
.alert-warning { background: #fff8e1; border-color: #f0a500; }
.alert-danger { background: #ffeaea; border-color: #c0392b; }
.alert-success { background: #eafaf1; border-color: #27ae60; }
.alert-info { background: var(--ta-blue-pale); border-color: var(--ta-blue); }

/* Footer */
footer.ta-footer {
  background: var(--ta-gray-light);
  border-top: 1.5px solid var(--ta-gray-mid);
  padding: 18px 40px;
  text-align: center;
  color: #666;
  font-size: 0.85em;
}
footer.ta-footer a { color: var(--ta-blue); text-decoration: none; }
footer.ta-footer a:hover { text-decoration: underline; }

/* Responsive */
@media (max-width: 768px) {
  .form-row { grid-template-columns: 1fr; }
  .content { padding: 20px; }
  header { padding: 20px; }
  header .header-text h1 { font-size: 1.4em; }
}