/* Design Tokens */
:root {
    --primary-blue: #2563eb;
    --primary-blue-hover: #1d4ed8;
    --primary-teal: #0d9488;
    --primary-teal-hover: #0f766e;
    --bg-light: #f8fafc;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --card-bg: #ffffff;
    --border-color: #e2e8f0;
    --success-green: #22c55e;
    --error-red: #ef4444;
    --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --radius: 12px;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-light);
    color: var(--text-main);
    line-height: 1.6;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    background: linear-gradient(135deg, var(--primary-blue), #1e40af);
    color: white;
    padding: 60px 0;
    text-align: center;
    margin-bottom: -60px; /* Overlap with card */
}

.header h1 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 10px;
}

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

/* Calculator Card */
.calculator-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    padding: 30px;
    margin-top: 20px;
    border: 1px solid var(--border-color);
}

.calculator-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

@media (max-width: 900px) {
    .calculator-grid {
        grid-template-columns: 1fr;
    }
    .header {
        padding: 40px 0 80px;
    }
}

/* Inputs Section */
.input-group-header {
    border-bottom: 2px solid var(--bg-light);
    margin: 25px 0 15px;
    padding-bottom: 5px;
}

.input-group-header:first-child {
    margin-top: 0;
}

.input-group-header h3 {
    font-size: 1.1rem;
    color: var(--primary-blue);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.input-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.input-field {
    display: flex;
    flex-direction: column;
}

.input-field label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 5px;
}

.input-field input {
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.2s;
}

.input-field input:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Sliders */
.slider-grid {
    display: grid;
    gap: 20px;
}

.slider-field {
    display: flex;
    flex-direction: column;
}

.slider-label {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 8px;
}

input[type="range"] {
    width: 100%;
    accent-color: var(--primary-blue);
}

/* Results Section */
.metrics-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-bottom: 25px;
}

.metric-card {
    background: var(--bg-light);
    padding: 15px;
    border-radius: 10px;
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border-color);
}

.metric-card.buying {
    border-left: 4px solid var(--primary-blue);
}

.metric-card.renting {
    border-left: 4px solid var(--primary-teal);
}

.metric-card.highlight {
    background: #f0f9ff;
    border-left: 4px solid var(--primary-blue);
}

.metric-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    font-weight: 700;
    color: var(--text-muted);
    margin-bottom: 5px;
}

.metric-value {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--text-main);
}

/* Verdict Banner */
.verdict-banner {
    padding: 20px;
    border-radius: 10px;
    text-align: center;
    margin-bottom: 25px;
    transition: background-color 0.3s;
}

.verdict-banner.buy-wins {
    background-color: #f0fdf4;
    border: 1px solid #bbf7d0;
    color: #166534;
}

.verdict-banner.rent-wins {
    background-color: #f0f9ff;
    border: 1px solid #bae6fd;
    color: #075985;
}

.verdict-banner p {
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 15px;
}

.cta-button {
    display: inline-block;
    background-color: var(--primary-blue);
    color: white;
    padding: 10px 20px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 700;
    font-size: 0.9rem;
    transition: transform 0.2s, background-color 0.2s;
}

.cta-button:hover {
    background-color: var(--primary-blue-hover);
    transform: translateY(-2px);
}

/* Chart */
.chart-container {
    height: 300px;
    margin-top: 20px;
}

/* Table */
.details-section {
    margin-top: 40px;
}

.section-header {
    margin-bottom: 20px;
}

.section-header h2 {
    font-size: 1.5rem;
    color: var(--text-main);
}

.table-responsive {
    overflow-x: auto;
    background: white;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
}

table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.9rem;
}

th {
    background-color: #f1f5f9;
    padding: 12px 15px;
    font-weight: 700;
    color: var(--text-muted);
}

td {
    padding: 12px 15px;
    border-bottom: 1px solid var(--border-color);
}

tr:last-child td {
    border-bottom: none;
}

/* Ad Slots */
.ad-slot {
    background: #f1f5f9;
    border: 1px dashed var(--border-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin: 30px 0;
    border-radius: 8px;
    min-height: 90px;
}

.ad-label {
    font-size: 10px;
    text-transform: uppercase;
    color: #94a3b8;
    margin-bottom: 5px;
}

/* Content Section */
.content-section {
    margin-top: 60px;
    max-width: 800px;
}

.content-section section {
    margin-bottom: 40px;
}

.content-section h2 {
    font-size: 1.8rem;
    margin-bottom: 15px;
    color: var(--text-main);
}

.content-section p {
    color: #475569;
    margin-bottom: 20px;
    font-size: 1.05rem;
}

.faq-list {
    margin-top: 20px;
}

.faq-item {
    margin-bottom: 25px;
}

.faq-item h3 {
    font-size: 1.2rem;
    margin-bottom: 8px;
}

/* Footer */
.footer {
    margin-top: 80px;
    padding: 40px 0;
    background-color: #1e293b;
    color: #94a3b8;
    text-align: center;
}

.footer p {
    margin-bottom: 10px;
}

/* Mobile Adjustments */
@media (max-width: 600px) {
    .metrics-grid {
        grid-template-columns: 1fr;
    }
    .input-grid {
        grid-template-columns: 1fr;
    }
}