/*--------------------------------------------------------------
# ROI Calculator & Discovery Form Styles
--------------------------------------------------------------*/

.roi-section {
    padding: 120px 20px;
    background: transparent;
    width: 100%;
    position: relative;
    overflow: hidden;
}

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

/* ── Header ── */
.roi-header {
    text-align: center;
    margin-bottom: 56px;
}

.roi-heading {
    font-family: var(--font-primary);
    font-size: clamp(32px, 4vw, 48px);
    font-weight: 300;
    color: var(--ink);
    letter-spacing: -0.04em;
    margin-bottom: 20px;
}

.roi-sub {
    font-family: var(--font-primary);
    font-size: 18px;
    color: var(--ink-soft);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* ── Tab Strip ── */
.roi-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 32px;
    justify-content: center;
    flex-wrap: wrap;
}

.roi-tab {
    font-family: var(--font-primary);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.04em;
    padding: 10px 24px;
    border-radius: 50px !important;
    border: 1px solid rgba(255, 255, 255, 0.12) !important;
    background: rgba(255, 255, 255, 0.06) !important;
    color: var(--ink-soft) !important;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    text-transform: uppercase;
}

.roi-tab:hover {
    border-color: rgba(255, 255, 255, 0.25) !important;
    color: #ffffff !important;
    background: rgba(255, 255, 255, 0.1) !important;
}

.roi-tab.active {
    background: rgba(255, 255, 255, 0.15) !important;
    border: 1px solid rgba(255, 255, 255, 0.35) !important;
    box-shadow: 0 4px 15px rgba(255, 61, 138, 0.15) !important;
    color: #ffffff !important;
    font-weight: 700 !important;
}

/* ── Calculator Card ── */
.calc-card {
    background: var(--glass-bg-grad) !important;
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid rgba(255, 255, 255, 0.15) !important;
    border-radius: 20px !important;
    display: grid;
    grid-template-columns: 1fr 1fr;
    overflow: hidden;
    max-width: 1100px;
    margin: 0 auto;
    position: relative;
    box-shadow: var(--shadow-premium) !important;
}

.calc-card::after {
    content: "";
    position: absolute;
    inset: -1px;
    pointer-events: none;
    --corner: 24px;
    --line: 2px;
    border-radius: 20px !important;
    background:
        linear-gradient(var(--pink) 0 0) top left / var(--corner) var(--line) no-repeat,
        linear-gradient(var(--pink) 0 0) top left / var(--line) var(--corner) no-repeat,
        linear-gradient(var(--pink) 0 0) top right / var(--corner) var(--line) no-repeat,
        linear-gradient(var(--pink) 0 0) top right / var(--line) var(--corner) no-repeat,
        linear-gradient(var(--pink) 0 0) bottom left / var(--corner) var(--line) no-repeat,
        linear-gradient(var(--pink) 0 0) bottom left / var(--line) var(--corner) no-repeat,
        linear-gradient(var(--pink) 0 0) bottom right / var(--corner) var(--line) no-repeat,
        linear-gradient(var(--pink) 0 0) bottom right / var(--line) var(--corner) no-repeat !important;
    opacity: 0.15;
    transition: opacity 0.3s ease;
    z-index: 10;
}

.calc-card:hover::after {
    opacity: 0.8;
}

/* Tab Panels */
.calc-panel {
    display: none;
}

.calc-panel.active {
    display: contents;
}

/* Left: Sliders */
.calc-inputs {
    padding: 64px;
    border-right: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    flex-direction: column;
    gap: 40px;
    justify-content: center;
}

.slider-group {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.slider-label {
    font-family: var(--font-primary);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--ink-dim);
}

.slider-row {
    display: flex;
    align-items: center;
    gap: 24px;
}

.slider-track {
    flex: 1;
}

/* Range Input Styling */
input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 16px !important;
    outline: none;
    cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--pink);
    border: 2px solid rgba(255, 255, 255, 0.9);
    box-shadow: 0 0 10px rgba(255, 61, 138, 0.4);
    cursor: pointer;
    transition: transform 0.15s, background-color 0.15s;
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    background: var(--amber);
}

input[type="range"]::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--pink);
    border: 2px solid rgba(255, 255, 255, 0.9);
    cursor: pointer;
}

.slider-value {
    font-family: var(--font-primary);
    font-size: 20px;
    font-weight: 700;
    color: var(--ink);
    min-width: 90px;
    text-align: right;
    white-space: nowrap;
}

/* Right: Results */
.calc-results {
    padding: 64px;
    background: rgba(255, 255, 255, 0.01);
    display: flex;
    flex-direction: column;
    gap: 32px;
    justify-content: center;
}

.result-label {
    font-family: var(--font-primary);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--ink-dim);
    margin-bottom: 8px;
}

.result-value {
    font-family: var(--font-primary);
    font-size: clamp(36px, 4.5vw, 56px);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    background: linear-gradient(135deg, var(--ink) 30%, var(--pink) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.result-secondary {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 24px;
}

.result-secondary .result-value {
    font-size: clamp(24px, 3vw, 32px);
    background: var(--ink);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.result-footnote {
    font-family: var(--font-primary);
    font-size: 12px;
    color: rgba(255, 255, 255, 0.52);
    line-height: 1.6;
    margin-top: 8px;
}

/* ── Form Inputs Global Styling ── */
select.form-input {
    appearance: auto !important;
    /* Allow browser native arrow or handle cleanly */
    background-image: none !important;
}

/* ── Responsive ── */
@media (max-width: 900px) {
    .calc-card {
        grid-template-columns: 1fr;
    }

    .calc-inputs {
        padding: 48px 24px;
        border-right: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .calc-results {
        padding: 48px 24px;
    }
}