/* ============================================================
   ROI-CALCULATOR.CSS — Interaktywny kalkulator ROI
   ============================================================ */

.roi-calculator {
    background-color: var(--color-slate-950);
    position: sticky;
    top: calc(var(--navbar-height, 72px) + 20px);
    z-index: 10;
}

.roi-calculator__container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--space-16) var(--container-padding) calc(var(--space-20) + 10vh);
    position: relative;
    z-index: 1;
}

/* Główne Światło (Primary) */
.roi-calculator__container::before {
    content: '';
    position: absolute;
    top: -50%;
    left: 40%;
    transform: translateX(-50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.15) 0%, transparent 70%);
    pointer-events: none;
    border-radius: 50%;
    z-index: 0;
}

/* Dodatkowe Światło (Success/Green) */
.roi-calculator__container::after {
    content: '';
    position: absolute;
    bottom: -30%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.12) 0%, transparent 60%);
    pointer-events: none;
    border-radius: 50%;
    z-index: 0;
}

.roi-calculator__header,
.roi-calculator__body {
    position: relative;
    z-index: 2;
}

.roi-calculator__header {
    text-align: center;
    max-width: 580px;
    margin: 0 auto var(--space-12);
}

.roi-calculator__header h2 {
    color: var(--color-white);
    margin-bottom: var(--space-4);
}

.roi-calculator__header p {
    color: var(--color-slate-400, #94a3b8);
}

/* --- Layout: formularz + wynik --- */

.roi-calculator__body {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
    align-items: start;
}

/* --- Formularz --- */

.roi-form {
    background-color: var(--color-slate-800);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-lg);
    padding: var(--space-8);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.roi-form::before {
    content: '';
    position: absolute;
    bottom: -40px;
    right: -40px;
    width: 220px;
    height: 220px;
    background-image: url('../../assets/images/logo-mark.svg');
    background-repeat: no-repeat;
    background-size: contain;
    background-position: center;
    opacity: 0.2;
    transform: rotate(15deg);
    pointer-events: none;
    z-index: -1;
}

.roi-form__group {
    margin-bottom: var(--space-6);
}

.roi-form__label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--color-slate-300);
    margin-bottom: var(--space-3);
}

.roi-form__value {
    font-weight: var(--font-bold);
    color: var(--color-primary-light);
}

.roi-form__range {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 4px;
    background: var(--color-slate-700);
    border-radius: var(--radius-full);
    outline: none;
}

.roi-form__range::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--color-primary);
    cursor: pointer;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.roi-form__range::-webkit-slider-thumb:hover {
    transform: scale(1.15);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.25);
}

.roi-form__range::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border: none;
    border-radius: 50%;
    background: var(--color-primary);
    cursor: pointer;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.roi-form__range::-moz-range-thumb:hover {
    transform: scale(1.15);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.25);
}

/* --- Wynik --- */

.roi-result {
    background-color: var(--color-slate-800);
    border: 1px solid rgba(37, 99, 235, 0.3);
    border-radius: var(--radius-lg);
    padding: var(--space-8);
}

.roi-result.hidden {
    display: none;
}

.roi-result__title {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--color-slate-400, #94a3b8);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: var(--space-6);
}

.roi-result__row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-4) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.roi-result__row:last-of-type {
    border-bottom: none;
}

.roi-result__label {
    font-size: var(--text-sm);
    color: var(--color-slate-400, #94a3b8);
}

.roi-result__val {
    font-size: var(--text-lg);
    font-weight: var(--font-bold);
    color: var(--color-white);
}

.roi-result__val--accent {
    color: var(--color-primary-light);
}

.roi-result__val--success {
    color: var(--color-success);
}

.roi-result__val--error {
    color: var(--color-error);
}

.roi-result__cta {
    margin-top: var(--space-6);
}

/* --- Responsive --- */

@media (max-width: 768px) {
    .roi-calculator__body {
        grid-template-columns: 1fr;
    }
}