/* ===== Calculator Page Styles ===== */

.calc-page {
    padding: 40px 0 80px;
    min-height: 100vh;
}

.calc-header {
    text-align: center;
    margin-bottom: 48px;
}

.calc-header h1 {
    font-size: clamp(1.6rem, 4vw, 2.4rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 12px;
    background: linear-gradient(135deg, #fff 0%, #c0c0d0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.calc-header p {
    color: var(--color-text-muted);
    font-size: 16px;
    max-width: 600px;
    margin: 0 auto;
}

/* ===== Input Grid ===== */
.calc-inputs {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}

.calc-input-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 24px;
    transition: border-color var(--transition);
}

.calc-input-card:hover {
    border-color: var(--color-accent);
}

.calc-input-card.full-width {
    grid-column: 1 / -1;
}

.calc-input-card label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    margin-bottom: 10px;
}

.calc-input-card select,
.calc-input-card input[type="number"] {
    width: 100%;
    padding: 12px 16px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text);
    font-size: 16px;
    font-family: inherit;
    transition: border-color var(--transition);
    -webkit-appearance: none;
    appearance: none;
}

.calc-input-card select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%239a9aab' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
    cursor: pointer;
}

.calc-input-card input[type="number"]:focus,
.calc-input-card select:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(62, 104, 255, 0.15);
}

.calc-input-card input[type="number"]::-webkit-inner-spin-button,
.calc-input-card input[type="number"]::-webkit-outer-spin-button {
    opacity: 1;
}

.input-hint {
    display: block;
    font-size: 12px;
    color: var(--color-text-muted);
    margin-top: 6px;
    opacity: 0.7;
}

/* ===== Results Section ===== */
.calc-results {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 40px;
    border-left: 4px solid var(--color-green);
    margin-bottom: 40px;
}

.calc-results h2 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 28px;
    color: var(--color-text);
}

.calc-results-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 32px;
}

.calc-result-item {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 20px;
    text-align: center;
}

.calc-result-item .result-label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    margin-bottom: 8px;
}

.calc-result-item .result-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
}

.calc-result-item .result-value.cost-tesla {
    color: var(--color-accent);
}

.calc-result-item .result-value.cost-gas {
    color: var(--color-red);
}

.calc-result-item .result-value.savings {
    color: var(--color-green);
}

/* ===== Savings Highlight ===== */
.calc-highlight {
    text-align: center;
    padding: 32px 20px;
    background: rgba(34, 197, 94, 0.06);
    border: 1px solid rgba(34, 197, 94, 0.2);
    border-radius: var(--radius);
    margin-bottom: 32px;
}

.calc-highlight .highlight-label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-green);
    margin-bottom: 8px;
}

.calc-highlight .highlight-value {
    display: block;
    font-size: clamp(2.2rem, 5vw, 3.2rem);
    font-weight: 700;
    color: var(--color-green);
    line-height: 1.2;
}

.calc-highlight .highlight-sub {
    display: block;
    font-size: 14px;
    color: var(--color-text-muted);
    margin-top: 8px;
}

/* ===== Savings Bar ===== */
.calc-savings-bar {
    margin-bottom: 12px;
}

.calc-savings-bar .bar-label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
    font-size: 13px;
    font-weight: 500;
}

.calc-savings-bar .bar-label .bar-name {
    color: var(--color-text-muted);
}

.calc-savings-bar .bar-label .bar-amount {
    font-weight: 600;
}

.bar-track {
    height: 32px;
    background: var(--color-bg);
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--color-border);
    position: relative;
}

.bar-fill {
    height: 100%;
    border-radius: 16px;
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    padding: 0 12px;
    font-size: 12px;
    font-weight: 600;
    color: #fff;
    white-space: nowrap;
    min-width: 40px;
}

.bar-fill.bar-tesla {
    background: linear-gradient(90deg, var(--color-accent), #5a82ff);
}

.bar-fill.bar-gas {
    background: linear-gradient(90deg, var(--color-red), #ff5a5e);
}

/* ===== CTA Section ===== */
.calc-cta {
    text-align: center;
    padding: 48px 32px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    margin-bottom: 40px;
}

.calc-cta h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.calc-cta p {
    color: var(--color-text-muted);
    margin-bottom: 24px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

/* ===== Tip Box ===== */
.calc-tip {
    background: rgba(62, 104, 255, 0.08);
    border: 1px solid rgba(62, 104, 255, 0.2);
    border-radius: var(--radius-sm);
    padding: 16px 20px;
    font-size: 14px;
    color: var(--color-text-muted);
    margin-bottom: 40px;
}

.calc-tip strong {
    color: var(--color-text);
}

/* ===== Range Slider ===== */
.calc-range {
    width: 100%;
    margin-top: 10px;
    -webkit-appearance: none;
    appearance: none;
    height: 6px;
    background: var(--color-border);
    border-radius: 3px;
    outline: none;
    cursor: pointer;
}
.calc-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--color-accent);
    cursor: pointer;
    border: 2px solid var(--color-bg);
    box-shadow: 0 2px 6px rgba(0,0,0,0.3);
}
.calc-range::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--color-accent);
    cursor: pointer;
    border: 2px solid var(--color-bg);
}

/* ===== Pulse Animation ===== */
@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.03); }
    100% { transform: scale(1); }
}
.calc-highlight.pulse {
    animation: pulse 0.4s ease;
}

/* ===== Savings Percentage Badge ===== */
.savings-pct-badge {
    display: inline-block;
    margin-top: 12px;
    padding: 6px 16px;
    background: rgba(34, 197, 94, 0.15);
    color: var(--color-green);
    border: 1px solid rgba(34, 197, 94, 0.3);
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
}

/* ===== CO2 Extras ===== */
.calc-extras {
    display: flex;
    justify-content: center;
    margin-bottom: 28px;
}
.calc-extra-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 16px 24px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
}
.calc-extra-item .extra-icon { font-size: 24px; }
.calc-extra-item .extra-value { font-size: 18px; font-weight: 700; color: var(--color-green); }
.calc-extra-item .extra-label { font-size: 12px; color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 0.05em; }

/* ===== Footer ===== */
.calc-footer {
    border-top: 1px solid var(--color-border);
    padding-top: 32px;
    text-align: center;
}

.calc-footer p {
    font-size: 13px;
    color: var(--color-text-muted);
    margin-bottom: 8px;
}

.calc-footer-links {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
    margin-top: 16px;
}

.calc-footer-links a {
    font-size: 14px;
}

/* ===== Nav Links ===== */
.nav-links {
    display: flex;
    gap: 16px;
    align-items: center;
}

.nav-links a {
    font-size: 13px;
    color: var(--color-text-muted);
    white-space: nowrap;
    transition: color var(--transition);
}

.nav-links a:hover {
    color: var(--color-text);
}

.back-link {
    font-size: 14px;
    font-weight: 500;
    white-space: nowrap;
}

/* ===== Language Buttons ===== */
.calc-langs {
    display: flex;
    gap: 4px;
}

.lang-btn {
    padding: 5px 12px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text-muted);
    background: none;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    font-family: inherit;
}

.lang-btn:hover {
    color: var(--color-text);
    background: var(--color-surface-2);
}

.lang-btn.active {
    color: #fff;
    background: var(--color-accent);
    border-color: var(--color-accent);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .calc-inputs {
        grid-template-columns: 1fr;
    }

    .calc-results-grid {
        grid-template-columns: 1fr;
    }

    .calc-results {
        padding: 28px 20px;
    }

    .calc-highlight .highlight-value {
        font-size: 2rem;
    }

    .lang-bar-inner {
        flex-wrap: wrap;
    }

    .calc-langs {
        order: 3;
        width: 100%;
        justify-content: center;
        margin-top: 8px;
    }

    .nav-links {
        gap: 10px;
    }
}

@media (max-width: 480px) {
    .calc-input-card {
        padding: 18px;
    }

    .nav-links a {
        font-size: 12px;
    }

    .calc-cta {
        padding: 32px 20px;
    }
}

/* ===== Print Styles ===== */
@media print {
    .lang-bar,
    .calc-inputs,
    .calc-cta,
    .calc-tip,
    .calc-footer,
    .no-print {
        display: none !important;
    }

    .calc-page {
        padding: 0;
    }

    .calc-results {
        border: 2px solid #000;
        border-left-width: 4px;
        box-shadow: none;
    }

    .calc-highlight .highlight-value {
        color: #000;
        -webkit-text-fill-color: #000;
    }

    body {
        background: #fff;
        color: #000;
    }

    .calc-header h1 {
        background: none;
        -webkit-text-fill-color: #000;
        color: #000;
    }
}

/* ===== Range Value Display ===== */
.range-value-display {
    text-align: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-accent);
    margin-top: 8px;
}

/* ===== Single Charge Section ===== */
.calc-single-charge {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 40px;
    margin-bottom: 24px;
    border-left: 4px solid var(--color-accent);
}

.calc-single-charge h2 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--color-text);
}

/* ===== Battery Visual ===== */
.battery-visual {
    display: flex;
    align-items: center;
    margin-bottom: 28px;
}

.battery-body {
    position: relative;
    width: 100%;
    height: 48px;
    background: var(--color-bg);
    border: 2px solid var(--color-border);
    border-radius: 10px;
    overflow: hidden;
}

.battery-fill {
    position: absolute;
    top: 4px;
    bottom: 4px;
    border-radius: 6px;
    background: linear-gradient(90deg, #3b82f6, #22c55e);
    transition: left 0.4s cubic-bezier(0.4, 0, 0.2, 1), width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0.9;
}

.battery-labels {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

.battery-label-start,
.battery-label-end {
    position: absolute;
    top: 50%;
    transform: translate(-50%, -50%);
    font-size: 12px;
    font-weight: 700;
    color: var(--color-text);
    text-shadow: 0 0 4px var(--color-bg), 0 0 4px var(--color-bg);
    transition: left 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.battery-nub {
    width: 8px;
    height: 20px;
    background: var(--color-border);
    border-radius: 0 4px 4px 0;
    margin-left: 2px;
    flex-shrink: 0;
}

/* ===== Single Charge Results Grid ===== */
.single-charge-results {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.charge-result-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 20px;
    text-align: center;
}

.charge-result-card .charge-result-label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    margin-bottom: 8px;
}

.charge-result-card .charge-result-value {
    display: block;
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-accent);
}

/* ===== Cost per km Section ===== */
.calc-cost-per-km {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 40px;
    margin-bottom: 24px;
}

.calc-cost-per-km h2 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--color-text);
    text-align: center;
}

.cost-per-km-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.cost-km-card {
    text-align: center;
    padding: 28px 20px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    background: var(--color-bg);
}

.cost-km-card .cost-km-icon {
    display: block;
    font-size: 28px;
    margin-bottom: 8px;
}

.cost-km-card .cost-km-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    margin-bottom: 8px;
}

.cost-km-card .cost-km-value {
    display: block;
    font-size: 1.6rem;
    font-weight: 700;
}

.cost-km-card .cost-km-unit {
    display: block;
    font-size: 12px;
    color: var(--color-text-muted);
    margin-top: 4px;
}

.cost-km-card.tesla-card .cost-km-value {
    color: var(--color-accent);
}

.cost-km-card.gas-card .cost-km-value {
    color: var(--color-red);
}

/* ===== Responsive additions ===== */
@media (max-width: 768px) {
    .single-charge-results {
        grid-template-columns: 1fr;
    }

    .cost-per-km-cards {
        grid-template-columns: 1fr;
    }

    .calc-single-charge {
        padding: 28px 20px;
    }

    .calc-cost-per-km {
        padding: 28px 20px;
    }
}