/* ErgoAssist - Modern UI Styles */

:root {
  --primary: #3498db;
  --primary-dark: #2980b9;
  --secondary: #2ecc71;
  --danger: #e74c3c;
  --warning: #f39c12;
  --dark: #2c3e50;
  --light: #ecf0f1;
  --white: #ffffff;
  --border: #dfe6e9;
  --shadow: rgba(0, 0, 0, 0.1);
}

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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  padding: 20px;
  line-height: 1.6;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  background: var(--white);
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  overflow: hidden;
}

/* Header */
header {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: var(--white);
  padding: 30px;
  text-align: center;
}

header .logo {
  width: 80px;
  height: 80px;
  margin: 0 auto 15px;
  display: block;
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.2));
  transition: transform 0.3s ease;
}

header .logo:hover {
  transform: scale(1.05);
}

header h1 {
  font-size: 2.5em;
  margin-bottom: 10px;
}

header p {
  font-size: 1.1em;
  opacity: 0.9;
}

/* Auth Section */
.auth-section {
  padding: 20px 30px;
  background: #f8f9fa;
  border-bottom: 1px solid var(--border);
}

.auth-section label {
  display: block;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--dark);
}

.auth-section input {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--border);
  border-radius: 8px;
  font-size: 1em;
  transition: border-color 0.3s;
}

.auth-section input:focus {
  outline: none;
  border-color: var(--primary);
}

/* Tabs */
.tabs {
  display: flex;
  background: var(--light);
  border-bottom: 2px solid var(--border);
}

.tab-btn {
  flex: 1;
  padding: 16px 20px;
  background: transparent;
  border: none;
  font-size: 1em;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
  color: #7f8c8d;
  border-bottom: 3px solid transparent;
}

.tab-btn:hover {
  background: rgba(52, 152, 219, 0.1);
  color: var(--primary);
}

.tab-btn.active {
  color: var(--primary);
  background: var(--white);
  border-bottom-color: var(--primary);
}

/* Tab Content */
.tab-content {
  display: none;
  padding: 30px;
  animation: fadeIn 0.3s ease-in;
}

.tab-content.active {
  display: block;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.tab-content h2 {
  color: var(--dark);
  margin-bottom: 20px;
  font-size: 1.8em;
  border-bottom: 2px solid var(--primary);
  padding-bottom: 10px;
}

/* Form Groups */
.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--dark);
}

.form-group input[type="text"],
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--border);
  border-radius: 8px;
  font-size: 1em;
  font-family: inherit;
  transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
  font-family: 'Consolas', 'Monaco', monospace;
}

.checkbox-group label {
  display: flex;
  align-items: center;
  cursor: pointer;
}

.checkbox-group input[type="checkbox"] {
  width: 20px;
  height: 20px;
  margin-right: 10px;
  cursor: pointer;
}

/* Buttons */
.btn {
  padding: 14px 28px;
  border: none;
  border-radius: 8px;
  font-size: 1em;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
  display: inline-block;
  text-align: center;
}

.btn-primary {
  background: var(--primary);
  color: var(--white);
  width: 100%;
  margin-bottom: 20px;
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(52, 152, 219, 0.4);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-primary:disabled {
  background: #95a5a6;
  cursor: not-allowed;
  transform: none;
}

/* Result Section */
.result-section {
  margin-top: 30px;
}

.result-section h3 {
  color: var(--dark);
  margin-bottom: 12px;
  font-size: 1.2em;
}

.result-box {
  background: #f8f9fa;
  border: 2px solid var(--border);
  border-radius: 8px;
  padding: 20px;
  min-height: 100px;
  max-height: 500px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-wrap: break-word;
  font-family: 'Consolas', 'Monaco', monospace;
  font-size: 0.95em;
  line-height: 1.6;
}

.result-box:empty::before {
  content: 'Hier erscheint das Ergebnis...';
  color: #95a5a6;
  font-style: italic;
}

.result-box img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  margin-top: 10px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* Warning Box */
.warning-box {
  background: #fff3cd;
  border: 2px solid var(--warning);
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 20px;
  color: #856404;
}

/* Success/Error Messages */
.success-msg {
  background: #d4edda;
  border: 2px solid var(--secondary);
  color: #155724;
  padding: 16px;
  border-radius: 8px;
  margin-bottom: 20px;
}

.error-msg {
  background: #f8d7da;
  border: 2px solid var(--danger);
  color: #721c24;
  padding: 16px;
  border-radius: 8px;
  margin-bottom: 20px;
}

/* Footer */
footer {
  background: #f8f9fa;
  padding: 20px;
  text-align: center;
  color: #7f8c8d;
  border-top: 1px solid var(--border);
}

footer p {
  margin: 0;
  font-size: 0.9em;
}

/* Loading Animation */
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.btn-loading {
  display: inline-block;
}

/* Documents List */
.documents-list {
  margin-top: 15px;
}

.document-item {
  background: white;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 15px;
  margin-bottom: 10px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.document-info {
  flex: 1;
}

.document-info h4 {
  margin: 0 0 5px 0;
  color: var(--dark);
}

.document-info p {
  margin: 0;
  font-size: 0.9em;
  color: #7f8c8d;
}

.document-actions button {
  background: var(--danger);
  color: white;
  border: none;
  padding: 8px 16px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9em;
  transition: all 0.3s;
}

.document-actions button:hover {
  background: #c0392b;
  transform: translateY(-2px);
}

input[type="file"] {
  width: 100%;
  padding: 12px;
  border: 2px dashed var(--border);
  border-radius: 8px;
  margin-bottom: 15px;
  cursor: pointer;
  transition: border-color 0.3s;
}

input[type="file"]:hover {
  border-color: var(--primary);
}

/* Responsive */
@media (max-width: 768px) {
  body {
    padding: 10px;
  }

  header h1 {
    font-size: 2em;
  }

  .container {
    border-radius: 12px;
  }

  .tab-content {
    padding: 20px;
  }

  .tabs {
    flex-direction: column;
  }

  .tab-btn {
    border-bottom: 1px solid var(--border);
    border-right: none !important;
  }

  .tab-btn.active {
    border-left: 3px solid var(--primary);
    border-bottom: 1px solid var(--border);
  }
}