/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Header Styles */
.header {
    text-align: center;
    margin-bottom: 40px;
    color: white;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    margin-bottom: 10px;
}

.logo i {
    font-size: 2.5rem;
    color: #ffd700;
}

.logo h1 {
    font-size: 3rem;
    font-weight: 700;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
    font-weight: 300;
}

/* Main Content */
.main-content {
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    overflow: hidden;
}

/* Form Container */
.form-container {
    padding: 40px;
}

.form-container h2 {
    font-size: 2.2rem;
    color: #2c3e50;
    margin-bottom: 10px;
    text-align: center;
}

.form-description {
    text-align: center;
    color: #7f8c8d;
    margin-bottom: 40px;
    font-size: 1.1rem;
}

/* Form Sections */
.form-section {
    margin-bottom: 40px;
    padding: 30px;
    background: #f8f9fa;
    border-radius: 15px;
    border: 1px solid #e9ecef;
}

.form-section h3 {
    font-size: 1.4rem;
    color: #2c3e50;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.form-section h3 i {
    color: #667eea;
}

.section-description {
    color: #6c757d;
    margin-bottom: 20px;
    font-size: 0.95rem;
}

/* Input Tabs */
.input-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 25px;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 12px 20px;
    border: 2px solid #e9ecef;
    background: white;
    color: #6c757d;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
}

.tab-btn:hover {
    border-color: #667eea;
    color: #667eea;
}

.tab-btn.active {
    background: #667eea;
    color: white;
    border-color: #667eea;
}

.tab-btn i {
    font-size: 1.1rem;
}

/* Tab Content */
.tab-content {
    display: none;
}

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

/* Input Groups */
.input-group {
    margin-bottom: 25px;
}

.input-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #2c3e50;
}

.input-group input,
.input-group select,
.input-group textarea {
    width: 100%;
    padding: 15px;
    border: 2px solid #e9ecef;
    border-radius: 10px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    background: white;
}

.input-group input:focus,
.input-group select:focus,
.input-group textarea:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.input-group textarea {
    resize: vertical;
    min-height: 80px;
}

/* Input Rows */
.input-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

@media (max-width: 768px) {
    .input-row {
        grid-template-columns: 1fr;
    }
}

/* File Upload Area */
.file-upload-area {
    position: relative;
    border: 2px dashed #dee2e6;
    border-radius: 15px;
    padding: 40px 20px;
    text-align: center;
    transition: all 0.3s ease;
    background: #f8f9fa;
}

.file-upload-area:hover {
    border-color: #667eea;
    background: #f0f2ff;
}

.file-upload-area input[type="file"] {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.upload-placeholder {
    pointer-events: none;
}

.upload-placeholder i {
    font-size: 3rem;
    color: #667eea;
    margin-bottom: 15px;
}

.upload-placeholder p {
    font-size: 1.1rem;
    color: #495057;
    margin-bottom: 10px;
    font-weight: 500;
}

.file-info {
    font-size: 0.9rem;
    color: #6c757d;
}

/* Upload Progress */
.upload-progress {
    margin-top: 20px;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: #e9ecef;
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 10px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #667eea, #764ba2);
    width: 0%;
    transition: width 0.3s ease;
    border-radius: 4px;
}

.progress-text {
    text-align: center;
    color: #667eea;
    font-weight: 500;
}

.upload-status {
    margin-top: 15px;
}

/* Form Actions */
.form-actions {
    text-align: center;
    margin-top: 40px;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 18px 40px;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.4);
}

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

.btn-primary:disabled,
.btn-primary.btn-disabled {
  background: #6c757d;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
  opacity: 0.6;
}

.btn-primary:disabled:hover,
.btn-primary.btn-disabled:hover {
  transform: none;
  box-shadow: none;
}

/* Results Section */
.results-section {
    padding: 40px;
    background: #f8f9fa;
    border-top: 1px solid #e9ecef;
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    flex-wrap: wrap;
    gap: 20px;
}

.results-header h2 {
    font-size: 2rem;
    color: #2c3e50;
    display: flex;
    align-items: center;
    gap: 10px;
}

.results-header h2 i {
    color: #667eea;
}

.overall-score {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 20px 30px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
}

.score-label {
    display: block;
    font-size: 0.9rem;
    opacity: 0.9;
    margin-bottom: 5px;
}

.score-value {
    font-size: 2.5rem;
    font-weight: 700;
}

/* Analysis Cards */
.analysis-card {
    background: white;
    border-radius: 15px;
    padding: 30px;
    margin-bottom: 25px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    border: 1px solid #e9ecef;
}

.analysis-card h3 {
    font-size: 1.5rem;
    color: #2c3e50;
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    gap: 10px;
    padding-bottom: 15px;
    border-bottom: 2px solid #f8f9fa;
}

.analysis-card h3 i {
    color: #667eea;
}

.analysis-content > div {
    margin-bottom: 25px;
}

.analysis-content h4 {
    font-size: 1.1rem;
    color: #495057;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.analysis-content h4 i {
    font-size: 1rem;
}

.pros-cons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

@media (max-width: 768px) {
    .pros-cons {
        grid-template-columns: 1fr;
    }
}

.pros h4 i {
    color: #28a745;
}

.cons h4 i {
    color: #dc3545;
}

.next-steps h4 i {
    color: #17a2b8;
}

.fixes h4 i {
    color: #ffc107;
}

.competitor-ideas h4 i {
  color: #6f42c1;
}

.lp-mismatch h4 i {
  color: #fd7e14;
}

.analysis-content p {
    color: #6c757d;
    line-height: 1.6;
}

.analysis-content ul {
    list-style: none;
    padding-left: 0;
}

.analysis-content li {
    background: #f8f9fa;
    padding: 12px 15px;
    margin-bottom: 8px;
    border-radius: 8px;
    border-left: 4px solid #667eea;
    color: #495057;
}

/* Results Actions */
.results-actions {
    text-align: center;
    margin-top: 30px;
}

.btn-secondary {
    background: white;
    color: #667eea;
    border: 2px solid #667eea;
    padding: 15px 30px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-secondary:hover {
    background: #667eea;
    color: white;
    transform: translateY(-2px);
}

/* Loading State */
.loading-state {
    padding: 60px 40px;
    text-align: center;
    background: #f8f9fa;
}

.loading-content h3 {
    font-size: 1.8rem;
    color: #2c3e50;
    margin-bottom: 15px;
}

.loading-content p {
    color: #6c757d;
    font-size: 1.1rem;
}

.spinner {
    width: 60px;
    height: 60px;
    border: 4px solid #e9ecef;
    border-top: 4px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 30px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    .form-container,
    .results-section {
        padding: 25px 20px;
    }
    
    .logo h1 {
        font-size: 2.5rem;
    }
    
    .form-container h2 {
        font-size: 1.8rem;
    }
    
    .input-tabs {
        justify-content: center;
    }
    
    .tab-btn {
        padding: 10px 16px;
        font-size: 0.9rem;
    }
    
    .btn-primary {
        padding: 15px 30px;
        font-size: 1rem;
        width: 100%;
        justify-content: center;
    }
}

/* Success/Error Messages */
.success-message {
    background: #d4edda;
    color: #155724;
    padding: 15px;
    border-radius: 8px;
    border: 1px solid #c3e6cb;
    margin-top: 15px;
}

.error-message {
    background: #f8d7da;
    color: #721c24;
    padding: 15px;
    border-radius: 8px;
    border: 1px solid #f5c6cb;
    margin-top: 15px;
}

/* Upload Success Display */
.upload-success {
    background: #d1ecf1;
    border: 1px solid #bee5eb;
    color: #0c5460;
    padding: 20px;
    border-radius: 10px;
    margin-top: 20px;
}

.upload-success h4 {
    color: #0c5460;
    margin-bottom: 15px;
}

.upload-success pre {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
    margin: 10px 0;
    font-size: 0.9rem;
}

.upload-success code {
    background: #e9ecef;
    padding: 4px 8px;
    border-radius: 4px;
    font-family: monospace;
}