/* ═══════════════════════════════════════════════════
   ROI CALCULATOR MODULE CSS — Gamified Copper
   ═══════════════════════════════════════════════════ */

.roi-section {
    position: relative;
    padding: clamp(60px, 10vh, 120px) 20px;
    overflow: hidden;
    user-select: none; /* Prevents text selection while dragging like a game */
}

/* Ambient glowing orbs */
.roi-ambient-ball {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    z-index: 0;
    pointer-events: none;
    opacity: 0.15;
    animation: roiFloat 12s infinite ease-in-out alternate;
}

.roi-ambient-1 {
    width: 400px; height: 400px;
    background: var(--copper);
    top: 10%; left: 10%;
}

.roi-ambient-2 {
    width: 300px; height: 300px;
    background: #22d3ee;
    bottom: -10%; right: 10%;
    animation-delay: -3s;
}

@keyframes roiFloat {
    to { transform: translate(60px, 40px) scale(1.1); }
}

.roi-container {
    position: relative;
    z-index: 2;
    max-width: 1100px;
    margin: 0 auto;
}

.roi-header {
    text-align: center;
    margin-bottom: 50px;
}

.roi-header h2 {
    font-family: 'Playfair Display', serif;
    font-size: clamp(32px, 5vw, 52px);
    color: #f0ece4;
    margin-bottom: 12px;
}

.roi-header h2 span {
    background: linear-gradient(135deg, var(--copper), #b76e79, #22d3ee);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.roi-card {
    background: rgba(10, 14, 26, 0.45);
    border: 1px solid rgba(var(--copper-rgb), 0.15);
    border-radius: 32px;
    padding: clamp(20px, 5vw, 50px);
    backdrop-filter: blur(40px);
    -webkit-backdrop-filter: blur(40px);
    box-shadow: 0 40px 100px rgba(0,0,0,0.6), inset 0 2px 20px rgba(255,255,255,0.03);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

/* Controls Side */
.roi-controls {
    display: flex;
    flex-direction: column;
    gap: 40px;
    justify-content: center;
}

.roi-slider-group {
    position: relative;
}

.roi-slider-controls {
    display: grid;
    grid-template-columns: 42px 1fr 42px;
    gap: 10px;
    align-items: center;
}

.roi-stepper-btn {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    border: 1px solid rgba(var(--copper-rgb), 0.28);
    background: linear-gradient(165deg, rgba(12, 18, 34, 0.95), rgba(8, 12, 24, 0.95));
    color: #f0ece4;
    font-size: 24px;
    line-height: 1;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.12s ease, border-color 0.2s ease, box-shadow 0.2s ease;
    user-select: none;
}

.roi-stepper-btn:hover {
    transform: translateY(-1px);
    border-color: rgba(var(--copper-rgb), 0.58);
    box-shadow: 0 8px 18px rgba(0, 0, 0, 0.35), 0 0 18px rgba(var(--copper-rgb), 0.24);
}

.roi-stepper-btn:active {
    transform: scale(0.96);
}

.roi-slider-label {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 16px;
}

.roi-slider-title {
    font-size: 15px;
    font-weight: 600;
    color: #9ca3af;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.roi-slider-value {
    font-size: 28px;
    font-weight: 800;
    font-family: 'JetBrains Mono', monospace;
    color: #f0ece4;
    background: rgba(0,0,0,0.3);
    padding: 4px 12px;
    border-radius: 8px;
    border: 1px solid rgba(255,255,255,0.05);
}

/* Custom Gamified Range Slider */
.roi-range {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 12px;
    padding: 0;
    border: 0;
    background: rgba(0,0,0,0.5);
    border-radius: 12px;
    outline: none;
    box-shadow: inset 0 2px 6px rgba(0,0,0,0.4);
    position: relative;
    cursor: grab;
}

.roi-range:active {
    cursor: grabbing;
}

.roi-range::-webkit-slider-runnable-track {
    height: 12px;
    background: linear-gradient(90deg, rgba(200,117,51,0.28), rgba(34,211,238,0.18));
    border-radius: 12px;
}

.roi-range::-moz-range-track {
    height: 12px;
    background: linear-gradient(90deg, rgba(200,117,51,0.28), rgba(34,211,238,0.18));
    border-radius: 12px;
    border: 0;
}

.roi-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--copper), #e8a96a);
    border: 2px solid rgba(255,255,255,0.28);
    box-shadow: 0 0 20px rgba(var(--copper-rgb),0.6), inset 0 2px 2px rgba(255,255,255,0.4);
    cursor: pointer;
    transition: transform 0.1s;
    margin-top: -10px;
}

.roi-range:active::-webkit-slider-thumb {
    transform: scale(1.2);
    box-shadow: 0 0 30px rgba(var(--copper-rgb),0.8), inset 0 2px 5px rgba(255,255,255,0.6);
}

.roi-range::-moz-range-thumb {
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--copper), #e8a96a);
    border: 2px solid rgba(255,255,255,0.28);
    box-shadow: 0 0 20px rgba(var(--copper-rgb),0.6), inset 0 2px 2px rgba(255,255,255,0.4);
    cursor: pointer;
    transition: transform 0.1s;
}

.roi-range:active::-moz-range-thumb {
    transform: scale(1.2);
}

/* Results Side */
.roi-results {
    background: rgba(0,0,0,0.2);
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: 24px;
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

/* Digital Grid Background inside results */
.roi-results::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: linear-gradient(rgba(34, 211, 238, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(34, 211, 238, 0.05) 1px, transparent 1px);
    background-size: 20px 20px;
    mask-image: radial-gradient(circle at center, black 40%, transparent 80%);
    pointer-events: none;
    z-index: 0;
}

.roi-stat-box {
    text-align: center;
    position: relative;
    z-index: 1;
    margin-bottom: 30px;
}

.roi-stat-box:last-child {
    margin-bottom: 0;
    padding-top: 30px;
    border-top: 1px dashed rgba(255,255,255,0.1);
}

.roi-stat-label {
    font-size: 14px;
    color: #9ca3af;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
}

.roi-stat-value {
    font-family: 'JetBrains Mono', monospace;
    font-size: 42px;
    font-weight: 800;
    color: #ef4444; /* Initial bad cost */
}

.roi-stat-box.highlight .roi-stat-value {
    font-size: 56px;
    background: linear-gradient(135deg, #22d3ee, #3b82f6);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 40px rgba(34,211,238,0.4);
}

.roi-currency {
    font-size: 24px;
    vertical-align: super;
    opacity: 0.6;
}

@media (max-width: 900px) {
    .roi-card {
        grid-template-columns: 1fr;
        padding: clamp(16px, 4vw, 30px);
        gap: clamp(24px, 5vw, 40px);
    }
    .roi-stat-box.highlight .roi-stat-value { font-size: 42px; }
}

@media (pointer: coarse) {
    .roi-stepper-btn { width: 48px; height: 48px; font-size: 26px; }
    .roi-range::-webkit-slider-thumb { width: 44px; height: 44px; }
    .roi-range::-moz-range-thumb { width: 44px; height: 44px; }
}