.kalkulator {
    padding-top: clamp(104px, 13vw, 150px);
}

.calc-intro {
    text-align: center;
    max-width: 640px;
    margin: 0 auto clamp(28px, 4vw, 44px);
}

.calc-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    font-family: var(--font-mono);
    font-size: .72rem;
    font-weight: 600;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--link-accent);
}

.calc-spark {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--forsythia);
    box-shadow: 0 0 10px var(--deep-saffron);
}

.calc-title {
    font-family: var(--font-title);
    font-weight: 800;
    font-size: clamp(2rem, 6vw, 3.1rem);
    line-height: 1.08;
    margin: 14px 0 0;
    color: var(--ink);
}

.calc-title .hl {
    background: linear-gradient(transparent 58%, var(--highlight-wash) 58%);
    box-decoration-break: clone;
    -webkit-box-decoration-break: clone;
    padding: 0 .06em;
}

.calc-lede {
    margin: 16px auto 0;
    max-width: 56ch;
    color: var(--ink-soft);
    font-size: 1rem;
}

.calc-panel {
    max-width: 1000px;
    margin: 0 auto;
    background: var(--card-bg);
    backdrop-filter: blur(var(--card-blur));
    -webkit-backdrop-filter: blur(var(--card-blur));
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: clamp(24px, 4vw, 40px);
}

.calc-readout {
    display: flex;
    justify-content: center;
    align-items: baseline;
    gap: 12px;
    flex-wrap: wrap;
}

.calc-kwh {
    font-family: var(--font-mono);
    font-weight: 600;
    font-size: clamp(3.2rem, 11vw, 6rem);
    line-height: .92;
    letter-spacing: -.03em;
    color: var(--link-accent);
}

.calc-unit {
    font-family: var(--font-mono);
    font-size: clamp(1.1rem, 3vw, 1.6rem);
    font-weight: 600;
    color: var(--ink-faint);
}

.calc-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 36px;
    margin-top: 20px;
    background: transparent;
    cursor: pointer;
}

.calc-slider::-webkit-slider-runnable-track {
    height: 10px;
    border-radius: 999px;
    background-image: linear-gradient(90deg, var(--forsythia), var(--deep-saffron));
    background-repeat: no-repeat;
    background-size: var(--fill, 5%) 100%;
    background-color: rgba(23, 43, 54, .10);
    border: 1px solid var(--border-soft);
}

[data-theme="dark"] .calc-slider::-webkit-slider-runnable-track {
    background-color: rgba(241, 246, 244, .12);
}

.calc-slider::-moz-range-track {
    height: 10px;
    border-radius: 999px;
    background: rgba(23, 43, 54, .10);
    border: 1px solid var(--border-soft);
}

[data-theme="dark"] .calc-slider::-moz-range-track {
    background: rgba(241, 246, 244, .12);
}

.calc-slider::-moz-range-progress {
    height: 10px;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--forsythia), var(--deep-saffron));
}

.calc-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 26px;
    height: 26px;
    margin-top: -9px;
    border-radius: 50%;
    background: radial-gradient(circle at 34% 30%, #FFE9A3, var(--forsythia) 60%);
    box-shadow: 0 0 0 4px rgba(255, 200, 1, .22), var(--shadow);
}

.calc-scale {
    display: flex;
    justify-content: space-between;
    margin-top: 2px;
    font-family: var(--font-mono);
    font-size: .68rem;
    color: var(--ink-faint);
}

.calc-cost {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px 14px;
    margin-top: 16px;
}

.calc-cost-val {
    font-family: var(--font-mono);
    font-size: .9rem;
    color: var(--ink-soft);
}

.calc-cost-toggle {
    display: inline-flex;
    border: 1px solid var(--btn-border);
    border-radius: 10px;
    overflow: hidden;
}

.calc-cost-toggle button {
    font-family: var(--font-mono);
    font-size: .68rem;
    letter-spacing: .03em;
    color: var(--ink-soft);
    background: transparent;
    border: 0;
    padding: 7px 11px;
    cursor: pointer;
    transition: color .15s ease, background .15s ease;
}

.calc-cost-toggle button.on {
    background: var(--highlight-wash);
    color: var(--link-accent);
    font-weight: 600;
}

.calc-section {
    margin-top: clamp(32px, 5vw, 48px);
}

.calc-sec-head {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 14px;
    margin-bottom: 16px;
    max-width: 1000px;
    margin-inline: auto;
}

.calc-sec-title {
    font-family: var(--font-mono);
    font-size: .78rem;
    font-weight: 600;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--link-accent);
    white-space: nowrap;
}

.calc-sec-line {
    height: 2px;
    flex: 1;
    border-radius: 999px;
    background: linear-gradient(90deg, transparent, var(--divider-glow));
}

.calc-sec-line:last-child {
    background: linear-gradient(90deg, var(--divider-glow), transparent);
}

.calc-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
    max-width: 1000px;
    margin: 0 auto;
}

.calc-card {
    background: var(--card-bg);
    backdrop-filter: blur(var(--card-blur));
    -webkit-backdrop-filter: blur(var(--card-blur));
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 18px 16px 16px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: border-color .18s ease, transform .18s ease, box-shadow .18s ease;
}

.calc-card:hover {
    transform: translateY(-3px);
    border-color: var(--forsythia);
    box-shadow: var(--shadow-lift);
}

.calc-ic {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 11px;
    font-size: 19px;
    background: linear-gradient(135deg, rgba(255, 200, 1, .20), rgba(255, 153, 50, .12));
    border: 1px solid var(--border-soft);
}

.calc-name {
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 11px 0 7px;
    min-height: 2.6em;
    font-size: .9rem;
    line-height: 1.3;
    font-weight: 500;
    color: var(--ink-soft);
}

.calc-q {
    display: flex;
    justify-content: center;
    align-items: baseline;
    gap: 7px;
    min-height: 1.55em;
}

.calc-n {
    font-family: var(--font-mono);
    font-weight: 600;
    font-size: 1.55rem;
    letter-spacing: -.01em;
    color: var(--ink);
}

.calc-u {
    font-size: .86rem;
    font-weight: 500;
    color: var(--ink-soft);
}

.calc-note {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 9px;
    min-height: 2.7em;
    font-family: var(--font-mono);
    font-size: .68rem;
    line-height: 1.35;
    color: var(--ink-faint);
}

.calc-foot {
    margin-top: clamp(32px, 5vw, 44px);
    padding-top: 20px;
    border-top: 1px solid var(--border-soft);
    font-size: .8rem;
    line-height: 1.7;
    color: var(--ink-faint);
    text-align: center;
    max-width: 1000px;
    margin-inline: auto;
}

.calc-foot b {
    color: var(--ink-soft);
    font-weight: 600;
}

@media (max-width: 760px) {
    .calc-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 560px) {
    .calc-grid {
        gap: 12px;
    }

    .calc-card {
        padding: 15px 13px 13px;
    }
}