/* ===== BATTMOBILITY DESIGN SYSTEM - CSS Variables ===== */
:root {
    /* Colors - Primary */
    --b2c-key: #4F8459;
    --air-flow: #BDE3FF;
    --graphite-drive: #4F4F4F;
    --off-white: #F6F9FD;

    /* Colors - Supporting */
    --green-shift: #97D7A0;
    --soft-grove: #DFF4E1;
    --path-clay: #F0E1CE;
    --urban-mist: #D9D9D9;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Spacing */
    --space-xs: 8px;
    --space-sm: 16px;
    --space-md: 24px;
    --space-lg: 32px;
    --space-xl: 48px;

    /* Border Radius */
    --radius-pill: 999px;
    --radius-card: 24px;
    --radius-input: 16px;

    /* Shadows */
    --shadow-sm: 0 2px 16px rgba(79, 79, 79, 0.06);
    --shadow-md: 0 8px 24px rgba(79, 79, 79, 0.1);
    --shadow-lg: 0 12px 32px rgba(79, 79, 79, 0.12);

    /* Transitions */
    --transition-base: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== Base Typography ===== */
.content-wrapper {
    font-family: var(--font-family);
    color: var(--graphite-drive);
    background: var(--off-white);
    letter-spacing: -0.32px;
}

/* ===== Cards ===== */
.card {
    background: white;
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: all var(--transition-base);
}
.card:hover {
    box-shadow: var(--shadow-md);
}
.card-header {
    padding: var(--space-sm) var(--space-md);
    background: var(--soft-grove);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 500;
    font-size: 16px;
    letter-spacing: -0.32px;
    border-radius: var(--radius-card) var(--radius-card) 0 0;
}
.card-header.collapsed {
    background: var(--off-white);
    border-radius: var(--radius-card);
}
.card-body {
    padding: var(--space-md);
}
.section-content {
    transition: all 0.3s ease;
}
.toggle-icon {
    font-size: 12px;
    color: var(--graphite-drive);
    opacity: 0.6;
}

/* ===== Form Elements ===== */
.form-row {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
    margin-bottom: var(--space-sm);
}
.form-group {
    flex: 1;
    min-width: 180px;
}
.form-group.full-width {
    flex: 100%;
}
.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: var(--space-xs);
    font-size: 14px;
    letter-spacing: -0.28px;
    color: var(--graphite-drive);
}
.form-group input[type="text"],
.form-group input[type="number"],
.form-group select {
    width: 100%;
    padding: var(--space-sm) 20px;
    border: 2px solid transparent;
    border-radius: var(--radius-input);
    font-size: 16px;
    font-family: var(--font-family);
    letter-spacing: -0.32px;
    color: var(--graphite-drive);
    background: var(--soft-grove);
    outline: none;
    transition: all var(--transition-base);
}
.form-group input[type="text"]:focus,
.form-group input[type="number"]:focus,
.form-group select:focus {
    background: white;
    border-color: var(--b2c-key);
    box-shadow: 0 0 0 3px rgba(79, 132, 89, 0.15);
}
.form-group input[type="text"]::placeholder,
.form-group input[type="number"]::placeholder {
    color: var(--urban-mist);
}
.form-group input[type="range"] {
    width: 100%;
    accent-color: var(--b2c-key);
}
.form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%234F4F4F' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 48px;
}

/* ===== Input Euro Prefix ===== */
.input-euro {
    position: relative;
}
.input-euro::before {
    content: "\20AC";
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--graphite-drive);
    opacity: 0.6;
    font-weight: 500;
    font-size: 14px;
    z-index: 1;
    pointer-events: none;
}
.input-euro input {
    padding-left: 44px;
}

/* ===== Range Display ===== */
.range-display {
    display: inline-block;
    min-width: 80px;
    text-align: right;
    font-weight: 500;
    color: var(--b2c-key);
    font-size: 14px;
    letter-spacing: -0.28px;
}
.hint {
    color: var(--urban-mist);
    font-size: 12px;
    font-weight: 400;
    letter-spacing: -0.24px;
}
.warning-text {
    color: #D32F2F;
    font-size: 12px;
    margin-top: 8px;
    letter-spacing: -0.24px;
}

/* ===== Radio/Checkbox Groups ===== */
.radio-group {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}
.radio-label {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    cursor: pointer;
    padding: 12px var(--space-sm);
    border: 2px solid var(--urban-mist);
    border-radius: var(--radius-pill);
    font-size: 14px;
    font-weight: 500;
    letter-spacing: -0.28px;
    transition: all var(--transition-base);
}
.radio-label:hover {
    border-color: var(--b2c-key);
    background: var(--soft-grove);
}
.radio-label:has(input:checked) {
    background: var(--b2c-key);
    color: white;
    border-color: var(--b2c-key);
}
.radio-label input[type="radio"],
.radio-label input[type="checkbox"] {
    display: none;
}

/* ===== Computed Field ===== */
.computed-field {
    margin-top: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: var(--soft-grove);
    border-radius: var(--radius-input);
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.computed-value {
    font-weight: 500;
    color: var(--b2c-key);
    font-size: 18px;
    letter-spacing: -0.36px;
}

/* ===== Buttons ===== */
.btn-preset {
    height: 44px;
    padding: 0 20px;
    border: 2px solid var(--urban-mist);
    background: white;
    border-radius: var(--radius-pill);
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    font-family: var(--font-family);
    letter-spacing: -0.28px;
    color: var(--graphite-drive);
    transition: all var(--transition-base);
}
.btn-preset:hover {
    border-color: var(--b2c-key);
    color: var(--b2c-key);
    transform: translateY(-1px);
}
.btn-preset.active {
    background: var(--b2c-key);
    color: white;
    border-color: var(--b2c-key);
    box-shadow: 0 4px 16px rgba(79, 132, 89, 0.25);
}

.btn-secondary {
    height: 40px;
    padding: 0 20px;
    border: 1.5px solid var(--urban-mist);
    background: transparent;
    border-radius: var(--radius-pill);
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    font-family: var(--font-family);
    letter-spacing: -0.28px;
    color: var(--graphite-drive);
    transition: all var(--transition-base);
}
.btn-secondary:hover {
    border-color: var(--b2c-key);
    color: var(--b2c-key);
    transform: translateY(-1px);
}
.btn-secondary.active {
    background: var(--b2c-key);
    color: white;
    border-color: var(--b2c-key);
}

.btn-sm {
    height: 32px;
    padding: 0 12px;
    font-size: 12px;
}

.btn-ghost {
    height: 40px;
    padding: 0 16px;
    background: transparent;
    border: none;
    border-radius: var(--radius-pill);
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    font-family: var(--font-family);
    letter-spacing: -0.28px;
    color: var(--graphite-drive);
    transition: all var(--transition-base);
}
.btn-ghost:hover {
    background: var(--soft-grove);
    color: var(--b2c-key);
}

/* ===== Results Card ===== */
.results-card .card-body {
    padding: var(--space-lg);
}
.result-main {
    text-align: center;
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--urban-mist);
    margin-bottom: var(--space-md);
}
.result-label {
    font-size: 14px;
    letter-spacing: -0.28px;
    color: var(--graphite-drive);
    opacity: 0.7;
    margin-bottom: var(--space-xs);
}
.result-value {
    font-size: 36px;
    font-weight: 500;
    letter-spacing: -0.72px;
    color: var(--graphite-drive);
}
.result-subtitle {
    font-size: 12px;
    letter-spacing: -0.24px;
    color: var(--graphite-drive);
    opacity: 0.5;
    margin-top: var(--space-xs);
}

.result-metrics {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--urban-mist);
}
.metric {
    text-align: center;
    flex: 1;
}
.metric-value {
    font-size: 24px;
    font-weight: 500;
    letter-spacing: -0.48px;
    color: var(--b2c-key);
}
.metric-label {
    font-size: 12px;
    letter-spacing: -0.24px;
    color: var(--graphite-drive);
    opacity: 0.6;
}

/* ===== Breakdown Section ===== */
.breakdown-section h4 {
    font-size: 14px;
    font-weight: 500;
    letter-spacing: -0.28px;
    color: var(--graphite-drive);
    margin: 0 0 var(--space-sm) 0;
}
.breakdown-table {
    font-size: 14px;
    letter-spacing: -0.28px;
}
.breakdown-row {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid var(--off-white);
}
.breakdown-row:last-child {
    border-bottom: none;
}
.breakdown-row.credit {
    color: var(--b2c-key);
}
.breakdown-label {
    color: var(--graphite-drive);
    opacity: 0.7;
}
.breakdown-value {
    font-weight: 500;
}

/* ===== Chart Section ===== */
.chart-section h4 {
    font-size: 14px;
    font-weight: 500;
    letter-spacing: -0.28px;
    color: var(--graphite-drive);
    margin: 0 0 var(--space-sm) 0;
}

/* ===== Section Headers ===== */
h4 {
    font-size: 14px;
    font-weight: 500;
    letter-spacing: -0.28px;
    color: var(--graphite-drive);
    margin: var(--space-md) 0 var(--space-sm) 0;
    padding-top: var(--space-sm);
    border-top: 1px solid var(--urban-mist);
}
h4:first-child {
    margin-top: 0;
    padding-top: 0;
    border-top: none;
}

/* ===== Modal ===== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(79, 79, 79, 0.4);
    backdrop-filter: blur(4px);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
}
.modal-content {
    background: white;
    border-radius: var(--radius-card);
    padding: var(--space-lg);
    width: 90%;
    max-width: 600px;
    max-height: 85vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}
.detail-row {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid var(--off-white);
}
.detail-row:last-child {
    border-bottom: none;
}
.detail-label {
    color: var(--graphite-drive);
    opacity: 0.7;
    font-size: 14px;
    letter-spacing: -0.28px;
}
.detail-value {
    font-weight: 500;
    font-size: 14px;
    letter-spacing: -0.28px;
}
.detail-formula {
    font-size: 12px;
    letter-spacing: -0.24px;
    color: var(--graphite-drive);
    opacity: 0.5;
    font-style: italic;
    margin-top: 4px;
}
.detail-section {
    margin-bottom: var(--space-md);
    padding: var(--space-sm);
    background: var(--off-white);
    border-radius: var(--radius-input);
}
.detail-section-title {
    font-weight: 500;
    color: var(--b2c-key);
    margin-bottom: var(--space-xs);
    font-size: 14px;
    letter-spacing: -0.28px;
}

/* ===== Clickable Row ===== */
.clickable-row {
    cursor: pointer;
    transition: background-color var(--transition-base);
    border-radius: var(--radius-input);
}
.clickable-row:hover {
    background-color: var(--soft-grove);
}

/* ===== Info Box (for tweedehands) ===== */
.info-box {
    background: var(--path-clay);
    border-left: 4px solid var(--b2c-key);
    border-radius: var(--radius-input);
    padding: var(--space-sm);
    font-size: 13px;
    letter-spacing: -0.26px;
    color: var(--graphite-drive);
}

/* ===== Page Header ===== */
.page-header {
    margin-bottom: var(--space-lg);
}
.page-header h1 {
    font-size: 36px;
    font-weight: 500;
    letter-spacing: -0.72px;
    color: var(--graphite-drive);
    margin: 0 0 var(--space-xs) 0;
}
.page-header p {
    font-size: 16px;
    letter-spacing: -0.32px;
    color: var(--graphite-drive);
    opacity: 0.6;
    margin: 0;
}

/* ===== Section Label Badge ===== */
.section-label {
    display: inline-block;
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    color: var(--b2c-key);
    background: var(--soft-grove);
    padding: 6px 14px;
    border-radius: var(--radius-pill);
    margin-bottom: var(--space-sm);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .form-group {
        min-width: 100%;
    }
    .result-value {
        font-size: 28px;
        letter-spacing: -0.56px;
    }
    .metric-value {
        font-size: 20px;
    }
    .card-body {
        padding: var(--space-sm);
    }
    .modal-content {
        padding: var(--space-md);
        width: 95%;
    }
}