/* ==========================================================================
   Calculadora de Flujo Volumétrico 3D (mm³/s)
   iDiUtils.com - /assets/css/calculadora-flujo-volumetrico-3d.css
   ========================================================================== */

.vol-grid {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 2rem;
    align-items: start;
}

@media (max-width: 992px) {
    .vol-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}

.vol-mode-tabs {
    display: flex;
    background: var(--color-bg-secondary, rgba(255, 255, 255, 0.05));
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 4px;
    margin-bottom: 1.75rem;
    gap: 6px;
}

.vol-mode-btn {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 0.75rem 1rem;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--color-text-secondary);
    background: transparent;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.vol-mode-btn:hover {
    color: var(--color-text-primary);
}

.vol-mode-btn.active {
    background: var(--color-primary, #3b38eb);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(59, 56, 235, 0.35);
}

.vol-section {
    background: var(--color-card-bg, rgba(255, 255, 255, 0.02));
    border: 1px solid var(--color-border);
    border-radius: 14px;
    padding: 1.25rem 1.5rem;
    margin-bottom: 1.5rem;
}

.vol-section-title {
    font-size: 1rem;
    font-weight: 800;
    color: var(--color-text-primary);
    margin: 0 0 1rem 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

.vol-section-title i {
    color: var(--color-primary);
}

.vol-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1rem;
}

.vol-row:last-child {
    margin-bottom: 0;
}

.vol-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.vol-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-secondary);
}

.vol-input-wrap {
    position: relative;
    display: flex;
    align-items: center;
}

.vol-input {
    width: 100%;
    padding: 0.7rem 0.9rem;
    font-size: 0.95rem;
    font-family: inherit;
    color: var(--color-text-primary);
    background: var(--color-input-bg, rgba(0, 0, 0, 0.2));
    border: 1px solid var(--color-border);
    border-radius: 8px;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.vol-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(59, 56, 235, 0.2);
}

.vol-input-unit {
    position: absolute;
    right: 0.9rem;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--color-text-muted);
    pointer-events: none;
}

.vol-input.has-unit {
    padding-right: 3.5rem;
}

.vol-help {
    font-size: 0.76rem;
    color: var(--color-text-muted);
    line-height: 1.4;
}

/* Presets */
.vol-chips {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    margin-top: 6px;
}

.vol-chip {
    background: var(--color-bg-secondary, rgba(255, 255, 255, 0.05));
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 4px 8px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.15s ease;
}

.vol-chip:hover {
    background: var(--color-primary);
    color: #ffffff;
    border-color: var(--color-primary);
}

/* Panel Lateral */
.vol-results-panel {
    position: sticky;
    top: 2rem;
    background: var(--color-card-bg, #1e293b);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 1.75rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.vol-res-hero-card {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.12) 0%, rgba(59, 130, 246, 0.12) 100%);
    border: 1px solid rgba(139, 92, 246, 0.3);
    border-radius: 14px;
    padding: 1.5rem;
    text-align: center;
    margin-bottom: 1.5rem;
}

.vol-hero-val {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--color-text-primary);
    line-height: 1.1;
    margin-bottom: 4px;
}

.vol-hero-sub {
    font-size: 0.92rem;
    color: var(--color-text-secondary);
}

.vol-status-card {
    border-radius: 12px;
    padding: 1rem 1.25rem;
    margin-top: 1rem;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.88rem;
    line-height: 1.5;
}

.vol-status-card.safe {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: #10b981;
}

.vol-status-card.warning {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.3);
    color: #f59e0b;
}

.vol-status-card.danger {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #ef4444;
}

.vol-gauge-bar {
    width: 100%;
    height: 12px;
    background: var(--color-border);
    border-radius: 6px;
    overflow: hidden;
    margin: 1rem 0;
}

.vol-gauge-fill {
    height: 100%;
    transition: width 0.3s ease, background 0.3s ease;
}