:root {
    --primary-color: #2c3e50;
    --primary-gradient: linear-gradient(135deg, #2c3e50, #1a252f);
    --secondary-color: #27ae60;
    --secondary-gradient: linear-gradient(135deg, #27ae60, #2ecc71);
    --accent-color: #e74c3c;
    --accent-gradient: linear-gradient(135deg, #e74c3c, #c0392b);
    --light-color: #ecf0f1;
    --dark-color: #34495e;
    --warning-color: #f39c12;
    --action-color: #3498db;
    --shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
    --border-radius: 8px;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    background-color: var(--light-color);
    background-image: linear-gradient(45deg, #f3f4f6 25%, transparent 25%, transparent 75%, #f3f4f6 75%, #f3f4f6), 
                      linear-gradient(45deg, #f3f4f6 25%, transparent 25%, transparent 75%, #f3f4f6 75%, #f3f4f6);
    background-size: 60px 60px;
    background-position: 0 0, 30px 30px;
    padding: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
    overflow: hidden;
    position: relative;
}

header {
    background: var(--primary-gradient);
    color: white;
    text-align: center;
    padding: 40px 20px;
    position: relative;
    overflow: hidden;
}

header::before {
    content: '';
    position: absolute;
    width: 200%;
    height: 200%;
    top: -50%;
    left: -50%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0) 70%);
    transform: rotate(45deg);
}

header h1 {
    font-size: 2.8rem;
    margin-bottom: 10px;
    text-shadow: 0 2px 4px rgba(0,0,0,0.2);
    position: relative;
}

header p {
    font-size: 1.2rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
    position: relative;
}

.steps-container {
    display: flex;
    min-height: 600px;
}

.steps-nav {
    width: 240px;
    background-color: var(--dark-color);
    display: flex;
    flex-direction: column;
    padding: 20px 0;
    box-shadow: inset -5px 0 15px rgba(0,0,0,0.1);
}

.step-button {
    background: none;
    border: none;
    color: white;
    padding: 18px 15px;
    text-align: left;
    font-size: 1rem;
    display: flex;
    align-items: center;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    border-left: 4px solid transparent;
}

.step-button i {
    margin-right: 12px;
    font-size: 1.3rem;
    width: 30px;
    text-align: center;
    transition: transform 0.3s ease;
}

.step-button.active {
    background: var(--secondary-gradient);
    border-left: 4px solid white;
}

.step-button.completed {
    border-left: 4px solid var(--secondary-color);
}

.step-button:hover:not(.active) {
    background-color: rgba(255, 255, 255, 0.1);
    border-left: 4px solid rgba(255, 255, 255, 0.3);
}

.step-button:hover i {
    transform: scale(1.2);
}

.steps-content {
    flex: 1;
    padding: 40px;
    position: relative;
    background-color: white;
}

.step-panel {
    display: none;
    animation: fadeIn 0.5s;
    max-width: 800px;
    margin: 0 auto;
}

.step-panel.active {
    display: block;
}

.step-panel h2 {
    color: var(--secondary-color);
    margin-bottom: 10px;
    font-size: 2rem;
    border-bottom: 2px solid var(--secondary-color);
    padding-bottom: 10px;
    display: inline-block;
}

.credit {
    font-style: italic;
    color: #777;
    margin-bottom: 20px;
    font-size: 0.9rem;
}

.step-content-main {
    font-size: 1.1rem;
    line-height: 1.7;
    margin-bottom: 30px;
}

.info-box {
    border-radius: var(--border-radius);
    padding: 20px;
    margin: 25px 0;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.info-box:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.info-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at top right, rgba(255,255,255,0.8) 0%, transparent 80%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.info-box:hover::before {
    opacity: 1;
}

.info-box h3 {
    display: flex;
    align-items: center;
    margin-bottom: 12px;
    font-size: 1.3rem;
    position: relative;
}

.info-box h3 i {
    margin-right: 12px;
    font-size: 1.5rem;
}

.info-box p {
    position: relative;
    font-size: 1.05rem;
}

.warning {
    background-color: rgba(243, 156, 18, 0.1);
    border-left: 4px solid var(--warning-color);
}

.warning h3 {
    color: var(--warning-color);
}

.action {
    background-color: rgba(52, 152, 219, 0.1);
    border-left: 4px solid var(--action-color);
}

.action h3 {
    color: var(--action-color);
}

.quote-box {
    background-color: rgba(155, 89, 182, 0.1);
    border-left: 4px solid #9b59b6;
    margin: 25px 0;
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.quote-box:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.quote-text {
    font-style: italic;
    font-size: 1.1rem;
    line-height: 1.6;
    position: relative;
    padding-left: 25px;
}

.quote-text::before {
    content: '"';
    font-size: 4rem;
    color: #9b59b6;
    opacity: 0.3;
    position: absolute;
    top: -30px;
    left: -10px;
}

.quote-author {
    text-align: right;
    font-weight: bold;
    color: #9b59b6;
    margin-top: 10px;
}

.resource-list {
    margin: 20px 0;
    list-style-type: none;
}

.resource-list li {
    padding: 12px 15px;
    margin-bottom: 10px;
    background-color: rgba(52, 152, 219, 0.05);
    border-radius: var(--border-radius);
    transition: var(--transition);
    display: flex;
    align-items: center;
}

.resource-list li:hover {
    transform: translateX(5px);
    background-color: rgba(52, 152, 219, 0.1);
}

.resource-list i {
    color: var(--action-color);
    margin-right: 10px;
    font-size: 1.2rem;
}

.progress-tracker {
    padding: 40px;
    background-color: rgba(0, 0, 0, 0.02);
    border-top: 1px solid #ddd;
}

.progress-tracker h3 {
    margin-bottom: 20px;
    color: var(--primary-color);
    font-size: 1.5rem;
    display: flex;
    align-items: center;
}

.progress-tracker h3 i {
    margin-right: 10px;
    color: var(--secondary-color);
}

.progress-bar-container {
    height: 10px;
    background-color: #ddd;
    border-radius: 5px;
    margin-bottom: 30px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: var(--secondary-gradient);
    width: 0;
    transition: width 1s ease;
    border-radius: 5px;
}

.progress-items {
    display: flex;
    flex-wrap: wrap;
}

.progress-item {
    width: 33.33%;
    padding: 10px 0;
    display: flex;
    align-items: center;
}

.progress-checkbox {
    margin-right: 10px;
    width: 20px;
    height: 20px;
    cursor: pointer;
    position: relative;
    appearance: none;
    border: 2px solid var(--primary-color);
    border-radius: 4px;
    transition: var(--transition);
}

.progress-checkbox:checked {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
}

.progress-checkbox:checked::after {
    content: '✓';
    color: white;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 12px;
}

.progress-item label {
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
}

.progress-item:hover label {
    color: var(--secondary-color);
}

.calculator-section {
    padding: 30px;
    background-color: #f9f9f9;
    border-top: 1px solid #ddd;
}

.calculator-container {
    max-width: 600px;
    margin: 0 auto;
    background: white;
    padding: 25px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.calculator-container h3 {
    text-align: center;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.calculator-form label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.calculator-form input {
    width: 100%;
    padding: 10px;
    margin-bottom: 15px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

.calculator-form button {
    background: var(--secondary-gradient);
    color: white;
    border: none;
    padding: 12px 20px;
    width: 100%;
    border-radius: 4px;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
}

.calculator-form button:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(39, 174, 96, 0.3);
}

.calculator-result {
    margin-top: 20px;
    padding: 15px;
    background-color: #f9f9f9;
    border-radius: 4px;
    text-align: center;
    display: none;
}

.calculator-result.show {
    display: block;
    animation: fadeIn 0.5s;
}

.toggle-dark-mode {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    z-index: 10;
    transition: var(--transition);
}

.toggle-dark-mode:hover {
    transform: rotate(30deg);
}

.dark-mode {
    --light-color: #1a1a2e;
    --dark-color: #16213e;
    --primary-color: #0f3460;
    --primary-gradient: linear-gradient(135deg, #0f3460, #16213e);
}

.dark-mode body {
    background-color: var(--light-color);
    background-image: linear-gradient(45deg, #1a1a2e 25%, transparent 25%, transparent 75%, #1a1a2e 75%, #1a1a2e), 
                      linear-gradient(45deg, #1a1a2e 25%, transparent 25%, transparent 75%, #1a1a2e 75%, #1a1a2e);
    color: #e1e1e1;
}

.dark-mode .container {
    background-color: #16213e;
}

.dark-mode .steps-content {
    background-color: #16213e;
    color: #e1e1e1;
}

.dark-mode .info-box {
    background-color: #1a1a2e;
}

.dark-mode .progress-tracker,
.dark-mode .calculator-section {
    background-color: #0f3460;
}

.dark-mode .calculator-container {
    background-color: #16213e;
    color: #e1e1e1;
}

.dark-mode .calculator-result {
    background-color: #1a1a2e;
    color: #e1e1e1;
}

.resources-section {
    padding: 30px;
    background-color: #f9f9f9;
    border-top: 1px solid #ddd;
}

.resources-container {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
}

.resource-card {
    width: calc(33.33% - 20px);
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: var(--transition);
}

.resource-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.resource-card-header {
    background: var(--primary-gradient);
    color: white;
    padding: 15px;
    text-align: center;
}

.resource-card-body {
    padding: 20px;
}

.resource-card p {
    margin-bottom: 15px;
    font-size: 0.95rem;
}

.resource-card a {
    display: inline-block;
    padding: 8px 15px;
    background: var(--secondary-gradient);
    color: white;
    text-decoration: none;
    border-radius: 4px;
    transition: var(--transition);
}

.resource-card a:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(39, 174, 96, 0.3);
}

footer {
    text-align: center;
    padding: 25px;
    background: var(--primary-gradient);
    color: white;
    font-size: 0.95rem;
}

.social-links {
    margin-top: 15px;
}

.social-links a {
    display: inline-block;
    margin: 0 10px;
    color: white;
    font-size: 1.5rem;
    transition: var(--transition);
}

.social-links a:hover {
    transform: translateY(-5px);
}

/* Tooltip styles */
.tooltip {
    position: relative;
    display: inline-block;
    margin-left: 5px;
    cursor: help;
}

.tooltip i {
    color: var(--action-color);
    font-size: 1rem;
}

.tooltip-text {
    visibility: hidden;
    width: 200px;
    background-color: #333;
    color: #fff;
    text-align: center;
    border-radius: 6px;
    padding: 10px;
    position: absolute;
    z-index: 1;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    opacity: 0;
    transition: opacity 0.3s;
    font-size: 0.9rem;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.tooltip-text::after {
    content: "";
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -5px;
    border-width: 5px;
    border-style: solid;
    border-color: #333 transparent transparent transparent;
}

.tooltip:hover .tooltip-text {
    visibility: visible;
    opacity: 1;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideInFromLeft {
    from { transform: translateX(-30px); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes slideInFromRight {
    from { transform: translateX(30px); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* Responsive styles */
@media (max-width: 900px) {
    .resource-card {
        width: calc(50% - 20px);
    }
}

@media (max-width: 768px) {
    .steps-container {
        flex-direction: column;
    }
    
    .steps-nav {
        width: 100%;
        flex-direction: row;
        overflow-x: auto;
        padding: 0;
    }
    
    .step-button {
        padding: 12px;
        flex-direction: column;
        justify-content: center;
        text-align: center;
        border-left: none;
        border-bottom: 4px solid transparent;
    }
    
    .step-button.active,
    .step-button.completed {
        border-left: none;
        border-bottom: 4px solid white;
    }
    
    .step-button:hover:not(.active) {
        border-left: none;
        border-bottom: 4px solid rgba(255, 255, 255, 0.3);
    }
    
    .step-button i {
        margin-right: 0;
        margin-bottom: 5px;
    }
    
    .progress-item {
        width: 50%;
    }
    
    .steps-content {
        padding: 20px;
    }
    
    .resource-card {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .progress-item {
        width: 100%;
    }
}