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

:root {
    --primary-color: #05386B;
    --secondary-color: #379683;
    --accent-color: #5CDB95;
    --light-accent: #8EE4AF;
    --background-color: #EDF5E1;
    --text-dark: #2c3e50;
    --text-light: #ffffff;
    --border-radius: 10px;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

/* Dark Mode Variables */
body.dark-mode {
    --background-color: #1a1a1a;
    --text-dark: #ffffff;
    --card-bg: #2d2d2d;
    --border-color: #404040;
}

/* Base Styles */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--background-color);
    transition: var(--transition);
}

/* Gradient Backgrounds */
.bg-primary-gradient {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
}

.bg-success-gradient {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--accent-color) 100%);
}

.bg-info-gradient {
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--light-accent) 100%);
}

.bg-warning-gradient {
    background: linear-gradient(135deg, #f39c12 0%, #f1c40f 100%);
}

.bg-secondary-gradient {
    background: linear-gradient(135deg, #95a5a6 0%, #7f8c8d 100%);
}

/* Navigation Styles */
.navbar {
    box-shadow: var(--box-shadow);
    backdrop-filter: blur(10px);
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
}

/* Offcanvas Styles */
.offcanvas {
    border: none;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
}

.offcanvas-body {
    padding: 0;
}

.list-group-item {
    border: none;
    padding: 15px 20px;
    transition: var(--transition);
}

.list-group-item:hover {
    background-color: var(--background-color);
    color: var(--primary-color);
    transform: translateX(5px);
}

/* Card Styles */
.card {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    background-color: var(--card-bg, white);
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.card-header {
    border-bottom: none;
    border-radius: var(--border-radius) var(--border-radius) 0 0;
    padding: 20px;
}

.card-body {
    padding: 25px;
}

/* Score Display Styles */
.score-card {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 50%, var(--accent-color) 100%);
    color: white;
    margin-bottom: 30px;
}

.score-display {
    padding: 20px 0;
}

.score-number {
    font-size: 4rem;
    font-weight: 700;
    display: block;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.score-bar {
    width: 100%;
    height: 20px;
    background-color: rgba(255, 255, 255, 0.3);
    border-radius: 10px;
    margin: 20px 0;
    overflow: hidden;
}

.score-progress {
    height: 100%;
    background: linear-gradient(90deg, #e74c3c 0%, #f39c12 50%, #27ae60 100%);
    border-radius: 10px;
    transition: width 0.8s ease;
    width: 0%;
}

.score-description {
    font-size: 1.2rem;
    margin-top: 15px;
    opacity: 0.9;
}

/* Question Group Styles */
.question-group {
    background-color: var(--card-bg, #f8f9fa);
    padding: 20px;
    border-radius: var(--border-radius);
    border-left: 4px solid var(--accent-color);
    margin-bottom: 25px;
}

.question-group h5 {
    color: var(--primary-color);
    margin-bottom: 15px;
    font-weight: 600;
}

.form-check {
    margin-bottom: 10px;
    padding: 10px;
    border-radius: 5px;
    transition: var(--transition);
}

.form-check:hover {
    background-color: var(--background-color);
}

.form-check-input {
    margin-top: 0.25em;
}

.form-check-input:checked {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
}

.form-check-label {
    font-weight: 500;
    cursor: pointer;
}

/* Button Styles */
.btn {
    border-radius: var(--border-radius);
    font-weight: 600;
    padding: 12px 24px;
    transition: var(--transition);
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--primary-color) 100%);
    transform: translateY(-2px);
}

.btn-success {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--accent-color) 100%);
}

.btn-outline-primary {
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-outline-primary:hover {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

/* Modal Styles */
.modal-content {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.modal-header {
    border-bottom: none;
    border-radius: var(--border-radius) var(--border-radius) 0 0;
}

.modal-body {
    padding: 30px;
}

.modal-footer {
    border-top: none;
    padding: 20px 30px;
}

/* Factor Item Styles */
.factor-item {
    padding: 15px;
    background-color: var(--card-bg, #f8f9fa);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--accent-color);
}

.factor-item h6 {
    margin-bottom: 8px;
    font-weight: 600;
}

.factor-item p {
    margin-bottom: 0;
    font-size: 0.9rem;
}

/* Canvas Styles */
canvas {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
}

/* Dark Mode Styles */
body.dark-mode {
    background-color: #1a1a1a;
    color: #ffffff;
}

body.dark-mode .card {
    background-color: #2d2d2d;
    color: #ffffff;
}

body.dark-mode .question-group {
    background-color: #3d3d3d;
}

body.dark-mode .form-check:hover {
    background-color: #4d4d4d;
}

body.dark-mode .factor-item {
    background-color: #3d3d3d;
}

body.dark-mode .modal-content {
    background-color: #2d2d2d;
    color: #ffffff;
}

body.dark-mode .list-group-item {
    background-color: transparent;
    color: #ffffff;
}

body.dark-mode .list-group-item:hover {
    background-color: #4d4d4d;
}

/* Responsive Design */
@media (max-width: 768px) {
    .score-number {
        font-size: 3rem;
    }
    
    .card-body {
        padding: 20px;
    }
    
    .question-group {
        padding: 15px;
    }
    
    .modal-body {
        padding: 20px;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
}

@media (max-width: 576px) {
    .score-number {
        font-size: 2.5rem;
    }
    
    .card-body {
        padding: 15px;
    }
    
    .question-group {
        padding: 12px;
    }
    
    .form-check {
        padding: 8px;
    }
    
    .navbar-brand {
        font-size: 1.3rem;
    }
}

/* Animation Classes */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

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

.scale-in {
    animation: scaleIn 0.3s ease-out;
}

@keyframes scaleIn {
    from {
        transform: scale(0.9);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

/* Loading Spinner */
.spinner {
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top: 3px solid var(--accent-color);
    width: 30px;
    height: 30px;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}

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

/* Accessibility Improvements */
.btn:focus,
.form-check-input:focus {
    box-shadow: 0 0 0 0.2rem rgba(92, 219, 149, 0.5);
    outline: none;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Print Styles */
@media print {
    .navbar,
    .btn,
    .modal,
    .offcanvas {
        display: none !important;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
    
    body {
        background-color: white;
        color: black;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #000000;
        --secondary-color: #333333;
        --accent-color: #0066cc;
        --background-color: #ffffff;
        --text-dark: #000000;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}