:root {
    /* Hunabkuh Theme Inspiration (Nature + Tech) */
    --primary-color: #2C5F2D; /* Forest Green */
    --primary-hover: #1F441F;
    --secondary-color: #1A535C; /* Deep Teal */
    --accent-color: #FF6B6B; /* Coral/Alert for "Loss" */
    --text-color: #333333;
    --text-light: #666666;
    --bg-color: #F7F9F7;
    --card-bg: #FFFFFF;
    --border-color: #E0E0E0;
    --success-color: #4CAF50;
    
    --font-main: 'Inter', system-ui, -apple-system, sans-serif;
}

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

body {
    font-family: var(--font-main);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.main-header {
    background-color: var(--secondary-color);
    color: white;
    padding: 2rem 0;
    text-align: center;
}

.main-header h1 {
    font-weight: 700;
    font-size: 2rem;
    letter-spacing: -0.5px;
}

.subtitle {
    font-weight: 300;
    opacity: 0.9;
    display: block;
    font-size: 1rem;
    margin-top: 0.5rem;
}

/* Layout */
.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 1.5rem;
    width: 100%;
}

main {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 3rem 0;
}

.calculator-card {
    background: var(--card-bg);
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    padding: 2.5rem;
    width: 100%;
    position: relative;
    overflow: hidden;
}

/* Progress Bar */
.progress-bar-container {
    background-color: #f0f0f0;
    height: 8px;
    border-radius: 4px;
    margin-bottom: 2rem;
    overflow: hidden;
}

.progress-bar {
    background-color: var(--primary-color);
    width: 25%;
    height: 100%;
    transition: width 0.4s ease;
}

/* Wizard Steps */
.wizard-step {
    display: none;
    animation: fadeIn 0.5s ease;
}

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

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

h2 {
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
    font-size: 1.75rem;
}

.step-description {
    color: var(--text-light);
    margin-bottom: 2rem;
}

/* Forms */
.input-group {
    margin-bottom: 2rem;
}

.input-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.input-group input {
    width: 100%;
    padding: 1rem;
    font-size: 1.1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    transition: border-color 0.2s;
}

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

.input-group small {
    display: block;
    margin-top: 0.5rem;
    color: var(--text-light);
    font-size: 0.85rem;
}

/* Buttons */
.actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

.center-actions {
    justify-content: center;
    margin-top: 2rem;
}

button {
    padding: 1rem 2rem;
    border-radius: 6px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: transform 0.1s, background-color 0.2s;
    border: none;
    font-family: var(--font-main);
}

button:active {
    transform: scale(0.98);
}

.btn-primary, .btn-submit {
    background-color: var(--primary-color);
    color: white;
}

.btn-primary:hover, .btn-submit:hover {
    background-color: var(--primary-hover);
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-light);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: #f5f5f5;
    color: var(--text-color);
}

/* Results */
.hidden {
    display: none;
}

.results-container {
    text-align: center;
}

.score-card {
    background-color: #FFF5F5;
    border-radius: 8px;
    padding: 2rem;
    margin-bottom: 2rem;
    border: 1px solid #FFE0E0;
}

.result-subtitle {
    margin-bottom: 1.5rem;
    color: var(--text-light);
}

.big-number {
    font-size: 3.5rem;
    font-weight: 800;
    margin: 1rem 0 2rem;
    line-height: 1;
}

.error-color {
    color: var(--accent-color);
}

.metrics-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    text-align: left;
    max-width: 500px;
    margin: 0 auto;
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.metric-item {
    display: flex;
    flex-direction: column;
}

.metric-item .label {
    font-size: 0.85rem;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.25rem;
}

.metric-item .value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--secondary-color);
}

/* Strategy Section */
.strategy-section {
    margin-top: 2rem;
    text-align: left;
    border-top: 1px solid var(--border-color);
    padding-top: 2rem;
}

.strategy-intro {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

.strategy-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.step-card {
    background: #f9fdf9;
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid #e0efe0;
}

.step-number {
    background-color: var(--primary-color);
    color: white;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    margin-bottom: 1rem;
}

.step-card h4 {
    margin-bottom: 0.5rem;
    color: var(--secondary-color);
}

.step-card p {
    font-size: 0.9rem;
    color: var(--text-light);
}

.main-footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-light);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 600px) {
    .metrics-grid {
        grid-template-columns: 1fr;
    }
    
    .big-number {
        font-size: 2.5rem;
    }
    
    .calculator-card {
        padding: 1.5rem;
    }
}