:root {
    --calc-primary: #1e3a8a;
    --calc-primary-light: #dbeafe;
    --calc-secondary: #ffa633;
    --calc-secondary-light: #fff3e0;
    --calc-bg: #f8fafc;
    --calc-card-bg: #ffffff;
    --calc-text: #1e293b;
    --calc-text-muted: #64748b;
    --calc-border: #e2e8f0;
    --calc-success: #22c55e;
    --calc-danger: #ef4444;
}

[data-theme='dark'], .dark-mode {
    --calc-bg: #0f172a;
    --calc-card-bg: #1e293b;
    --calc-text: #f8fafc;
    --calc-text-muted: #94a3b8;
    --calc-border: #334155;
    --calc-primary-light: rgba(30, 58, 138, 0.2);
}

.calculator-container {
    font-family: 'Cera Pro', 'Poppins', sans-serif;
    color: var(--calc-text);
}

.calc-card {
    background: var(--calc-card-bg);
    border: 1px solid var(--calc-border);
    border-radius: 1.25rem;
    padding: 2rem;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05);
    margin-bottom: 2rem;
    transition: transform 0.3s ease;
}

.calc-label {
    font-weight: 600;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: var(--calc-text);
}

.calc-input, .calc-select {
    border-radius: 0.75rem;
    padding: 0.75rem 1rem;
    border: 1px solid var(--calc-border);
    background-color: var(--calc-card-bg);
    color: var(--calc-text);
}

.calc-input:focus, .calc-select:focus {
    border-color: var(--calc-primary);
    box-shadow: 0 0 0 4px var(--calc-primary-light);
}

/* Vehicle Type Grid */
.vehicle-type-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.type-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1rem;
    border: 2px solid var(--calc-border);
    border-radius: 1rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.type-item i {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--calc-text-muted);
}

.type-item span {
    font-weight: 500;
    font-size: 0.85rem;
}

.type-item.active {
    border-color: var(--calc-primary);
    background-color: var(--calc-primary-light);
}

.type-item.active i {
    color: var(--calc-primary);
}

/* Results Section */
.results-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.result-summary-card {
    padding: 1.5rem;
    border-radius: 1rem;
    text-align: center;
}

.result-summary-card.primary {
    background-color: var(--calc-primary-light);
    color: var(--calc-primary);
}

.result-summary-card.secondary {
    background-color: var(--calc-secondary-light);
    color: #b45309;
}

.result-title {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.result-value {
    font-size: 1.75rem;
    font-weight: 800;
    margin-bottom: 0.25rem;
}

.result-subtitle {
    font-size: 0.8rem;
    font-weight: 500;
    opacity: 0.8;
}

/* Condition Badges */
.badge-condition {
    padding: 0.4rem 0.8rem;
    border-radius: 2rem;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
}

.badge-excellent { background: #dcfce7; color: #166534; }
.badge-good { background: #dbeafe; color: #1e40af; }
.badge-average { background: #fef9c3; color: #854d0e; }
.badge-poor { background: #fee2e2; color: #991b1b; }

/* Example Cards */
.example-card {
    background: var(--calc-card-bg);
    border: 1px solid var(--calc-border);
    padding: 1.25rem;
    border-radius: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.example-card:hover {
    border-color: var(--calc-primary);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    transform: translateY(-2px);
}

.example-icon {
    width: 48px;
    height: 48px;
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    margin-right: 1.25rem;
}

.bg-blue-soft { background-color: #e0f2fe; color: #0369a1; }
.bg-orange-soft { background-color: #ffedd5; color: #c2410c; }

/* SEO Content Styling */
.seo-article-content {
    background: var(--calc-card-bg);
    border: 1px solid var(--calc-border);
    border-radius: 1.25rem;
    padding: 3rem;
}

.section-title {
    color: var(--calc-primary);
    font-weight: 800;
    margin-bottom: 2rem;
}

.content-body h3 {
    margin-top: 2rem;
    font-weight: 700;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .results-grid {
        grid-template-columns: 1fr;
    }
    
    .seo-article-content {
        padding: 1.5rem;
    }
}


.info-box {
    background: #f1f5f9;
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    border-left: 4px solid var(--calc-primary);
}

.chart-wrapper {
    background: #ffffff;
    border-radius: 0.75rem;
    padding: 1rem;
}

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

.calc-card-animate {
  animation: fadeInUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}