/* =========================================================
   TGM Interactive Degree of Difficulty (DD) Calibration Sandbox
   Compact 2x2 Grid Architecture (Maximum Space Compression)
   ========================================================= */

.dd-sandbox-section {
    background: linear-gradient(135deg, rgba(17, 24, 39, 0.95) 0%, rgba(10, 15, 26, 0.98) 100%);
    border: 1px solid rgba(1, 245, 187, 0.22);
    border-radius: 14px;
    padding: 16px 22px 18px 22px;
    margin-bottom: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.08);
    position: relative;
    overflow: hidden;
}

.dd-sandbox-section::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #01F5BB, #3B82F6, #8B5CF6, #F59E0B);
}

/* --- Compact Header Bar --- */
.dd-sandbox-header-compact {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 8px;
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.dd-sandbox-heading {
    font-size: 0.95rem;
    font-weight: 800;
    color: #FFFFFF;
    margin: 0;
    letter-spacing: -0.2px;
    font-family: 'Inter', sans-serif;
}

.dd-sandbox-divider {
    color: rgba(255, 255, 255, 0.25);
    margin: 0 4px;
    font-weight: 400;
}

/* --- Sandbox 2-Column Split Layout --- */
.dd-sandbox-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 18px;
    align-items: stretch;
}

@media (max-width: 980px) {
    .dd-sandbox-layout {
        grid-template-columns: 1fr;
        gap: 14px;
    }
}

/* --- 2x2 Slider Grid (Left Column) --- */
.dd-sliders-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

@media (max-width: 640px) {
    .dd-sliders-grid {
        grid-template-columns: 1fr;
    }
}

.dd-slider-card {
    background: rgba(15, 23, 42, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 10px;
    padding: 10px 14px 10px 14px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    transition: border-color 0.15s ease, background 0.15s ease;
}

.dd-slider-card:hover {
    border-color: rgba(1, 245, 187, 0.35);
    background: rgba(15, 23, 42, 0.9);
}

.dd-slider-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
    margin-bottom: 4px;
}

.dd-pillar-tag {
    font-family: 'JetBrains Mono', monospace, sans-serif;
    font-size: 0.72rem;
    font-weight: 800;
    color: #94A3B8;
    letter-spacing: 0.5px;
    flex-shrink: 0;
}

.dd-selected-label {
    font-size: 0.80rem;
    font-weight: 700;
    color: #01F5BB;
    text-align: right;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: color 0.2s ease;
}

/* Custom Compact Range Slider */
.dd-range-wrapper {
    position: relative;
    padding: 2px 0;
}

.dd-range-input {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: #1E293B;
    outline: none;
    cursor: pointer;
    margin: 4px 0 0 0;
    display: block;
}

.dd-range-input:focus {
    outline: none;
}

.dd-range-input::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 17px;
    height: 17px;
    border-radius: 50%;
    background: #01F5BB;
    cursor: pointer;
    border: 2px solid #0B0F1A;
    box-shadow: 0 0 10px rgba(1, 245, 187, 0.6);
    transition: transform 0.12s ease, background-color 0.12s ease;
}

.dd-range-input::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 0 14px rgba(1, 245, 187, 0.9);
}

.dd-range-input::-webkit-slider-thumb:active {
    transform: scale(1.25);
    background: #FFFFFF;
}

.dd-range-input::-moz-range-thumb {
    width: 17px;
    height: 17px;
    border-radius: 50%;
    background: #01F5BB;
    cursor: pointer;
    border: 2px solid #0B0F1A;
    box-shadow: 0 0 10px rgba(1, 245, 187, 0.6);
}

/* --- Right Column: Compact Readout Gauge Card --- */
.dd-gauge-card {
    background: linear-gradient(180deg, #0F172A 0%, #0B0F1A 100%);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 10px;
    padding: 16px 18px;
    text-align: center;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
}

.dd-gauge-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    gap: 10px;
    margin-bottom: 4px;
}

.dd-gauge-label {
    font-family: 'JetBrains Mono', monospace, sans-serif;
    font-size: 0.95rem;
    font-weight: 900;
    color: #FFFFFF;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.dd-gauge-tier-pill {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 999px;
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.6px;
    text-transform: uppercase;
    background: rgba(245, 158, 11, 0.15);
    border: 1px solid rgba(245, 158, 11, 0.4);
    color: #F59E0B;
    transition: all 0.25s ease;
}

.dd-gauge-score-display {
    font-size: 3.4rem;
    font-weight: 900;
    color: #F59E0B;
    font-family: 'JetBrains Mono', monospace, sans-serif;
    line-height: 1;
    margin: 8px 0 12px 0;
    letter-spacing: -2px;
    text-shadow: 0 0 24px rgba(245, 158, 11, 0.35);
    transition: color 0.25s ease, text-shadow 0.25s ease;
}

.dd-gauge-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    width: 100%;
    margin-top: auto;
}

.dd-btn-register {
    background: #F59E0B;
    color: #0B0F1A;
    font-weight: 800;
    font-size: 0.78rem;
    padding: 7px 10px;
    border-radius: 6px;
    text-decoration: none;
    transition: all 0.15s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    white-space: nowrap;
}

.dd-btn-register:hover {
    background: #D97706;
    color: #FFFFFF;
}

.dd-btn-calibrate {
    background: rgba(1, 245, 187, 0.12);
    border: 1px solid #01F5BB;
    color: #01F5BB;
    font-weight: 700;
    font-size: 0.78rem;
    padding: 6px 10px;
    border-radius: 6px;
    text-decoration: none;
    transition: all 0.15s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    white-space: nowrap;
}

.dd-btn-calibrate:hover {
    background: rgba(1, 245, 187, 0.22);
}

/* --- Streamlined Registry Metadata Ticker Bar (Moved Below Hero) --- */
.registry-kpi-ticker {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 14px;
    background: rgba(15, 23, 42, 0.55);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 8px;
    padding: 8px 16px;
    margin-bottom: 18px;
    font-size: 0.80rem;
    color: #94A3B8;
}

.kpi-ticker-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.kpi-ticker-item strong {
    color: #01F5BB;
    font-family: 'JetBrains Mono', monospace, sans-serif;
    font-size: 0.88rem;
}

.kpi-ticker-dot {
    color: rgba(255, 255, 255, 0.2);
    user-select: none;
}