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

:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary-color: #8b5cf6;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --dark-color: #1f2937;
    --gray-color: #6b7280;
    --light-gray: #f3f4f6;
    --white: #ffffff;
    --border-radius: 12px;
    --transition: all 0.3s ease;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--light-gray);
    color: var(--dark-color);
    line-height: 1.6;
}

/* App Container */
.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    padding: 2rem 0;
    box-shadow: var(--shadow-md);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    text-align: center;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 0.5rem;
}

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

.logo h1 {
    font-size: 2rem;
    font-weight: 700;
}

.subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* Main Content */
.main-content {
    flex: 1;
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 2rem;
    width: 100%;
}

/* Tabs */
.tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.tab-button {
    flex: 1;
    padding: 1rem 2rem;
    border: none;
    background: var(--white);
    color: var(--gray-color);
    font-size: 1rem;
    font-weight: 500;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    box-shadow: var(--shadow-sm);
}

.tab-button.active {
    background: var(--primary-color);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.tab-button:hover:not(.active) {
    background: var(--light-gray);
}

/* Tab Content */
.tab-content {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    margin-bottom: 2rem;
}

.tab-pane {
    display: none;
}

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

/* Form Sections */
.form-section {
    margin-bottom: 2.5rem;
    padding-bottom: 2.5rem;
    border-bottom: 1px solid #e5e7eb;
}

.form-section:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.section-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 1.5rem;
}

.section-title i {
    color: var(--primary-color);
}

/* Form Grid */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

/* Form Groups */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 500;
    color: var(--dark-color);
}

/* Checkbox Groups */
.checkbox-group {
    flex-direction: row;
    align-items: center;
    gap: 0.75rem;
}

.checkbox-group input[type="checkbox"] {
    width: 1.25rem;
    height: 1.25rem;
    cursor: pointer;
    accent-color: var(--primary-color);
}

.checkbox-group label {
    cursor: pointer;
    user-select: none;
}

/* Input Fields */
input[type="number"],
select,
textarea {
    padding: 0.75rem 1rem;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    font-size: 1rem;
    transition: var(--transition);
    background: var(--white);
}

input[type="number"]:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

textarea {
    resize: vertical;
    min-height: 200px;
    font-family: inherit;
}

/* Range Input */
.range-input {
    display: flex;
    align-items: center;
    gap: 1rem;
}

input[type="range"] {
    flex: 1;
    -webkit-appearance: none;
    height: 8px;
    background: #e5e7eb;
    border-radius: 4px;
    outline: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    background: var(--primary-color);
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.range-value {
    min-width: 50px;
    text-align: center;
    font-weight: 600;
    color: var(--primary-color);
}

/* Submit Button */
.submit-button {
    width: 100%;
    padding: 1rem 2rem;
    border: none;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    box-shadow: var(--shadow-md);
    margin-top: 2rem;
}

.submit-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.submit-button:active {
    transform: translateY(0);
}

.submit-button:disabled {
    background: var(--gray-color);
    cursor: not-allowed;
}

/* Results Section */
.results-section {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    animation: fadeIn 0.5s ease;
}

.results-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 2rem;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

/* Result Cards */
.result-card {
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.result-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.card-header {
    padding: 1.5rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
}

.classification-badge {
    font-size: 1.5rem;
    font-weight: 700;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    letter-spacing: 1px;
}

.card-body {
    padding: 1.5rem;
    background: var(--white);
    min-height: 200px;
}

/* Loading State */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    color: var(--gray-color);
    font-size: 1.1rem;
    padding: 2rem;
}

.loading i {
    font-size: 1.5rem;
}

/* Full Analysis */
.full-analysis {
    background: #f9fafb;
    padding: 2rem;
    border-radius: var(--border-radius);
    border: 1px solid #e5e7eb;
}

.full-analysis h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.analysis-content {
    line-height: 1.8;
    white-space: pre-wrap;
}

/* New Analysis Button */
.new-analysis-button {
    margin-top: 2rem;
    padding: 1rem 2rem;
    border: 2px solid var(--primary-color);
    background: var(--white);
    color: var(--primary-color);
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-left: auto;
    margin-right: auto;
}

.new-analysis-button:hover {
    background: var(--primary-color);
    color: var(--white);
}

/* Footer */
.footer {
    background: var(--dark-color);
    color: var(--white);
    text-align: center;
    padding: 2rem;
    margin-top: auto;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-content {
        padding: 0 1rem;
    }
    
    .logo h1 {
        font-size: 1.5rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    .main-content {
        padding: 0 1rem;
    }
    
    .tabs {
        flex-direction: column;
    }
    
    .tab-button {
        width: 100%;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .results-grid {
        grid-template-columns: 1fr;
    }
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.mb-2 {
    margin-bottom: 2rem;
}

.mt-2 {
    margin-top: 2rem;
}