/* =========================================================
   Calculadora de Capacidad de Alberca v1.1.0
   Estilos autocontenidos — prefijo "calc-alberca" / "calc-"
   ========================================================= */

.calc-alberca-wrapper *,
.calc-alberca-wrapper *::before,
.calc-alberca-wrapper *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* ── Contenedor principal ── */
.calc-alberca-wrapper {
    display: flex;
    flex-wrap: wrap;
    background: #ffffff;
    border-radius: 20px;
    box-shadow: 0 4px 32px rgba(0,60,140,0.10), 0 1px 4px rgba(0,0,0,0.06);
    overflow: hidden;
    max-width: 960px;
    margin: 32px auto;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* ── Paneles ── */
.calc-panel { padding: 36px 32px; }

.calc-panel--controls {
    flex: 1 1 55%;
    min-width: 300px;
    background: #f7f9fc;
    border-right: 1px solid #e8edf5;
}

.calc-panel--result {
    flex: 1 1 40%;
    min-width: 260px;
    background: linear-gradient(145deg, #1a5fc8 0%, #0e3d8a 60%, #0a2d6a 100%);
    color: #ffffff;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

/* ── Badge ── */
.calc-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: #e8f0fe;
    color: #1a5fc8;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.08em;
    padding: 5px 12px;
    border-radius: 20px;
    margin-bottom: 16px;
}

/* ── Textos controles ── */
.calc-titulo {
    font-size: clamp(17px, 2.5vw, 21px);
    font-weight: 800;
    color: #0d1f3c;
    line-height: 1.3;
    margin-bottom: 8px;
}

.calc-subtitulo {
    font-size: 13px;
    color: #6b7a99;
    margin-bottom: 24px;
    line-height: 1.5;
}

/* ── Selector de forma ── */
.calc-forma-group {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.calc-forma-label {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.08em;
    color: #6b7a99;
    white-space: nowrap;
}

.calc-forma-btns { display: flex; gap: 6px; flex-wrap: wrap; }

.calc-forma-btn {
    padding: 7px 16px;
    border-radius: 8px;
    border: 1.5px solid #d0d9ea;
    background: #fff;
    color: #3a4a6b;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.18s, color 0.18s, border-color 0.18s;
    line-height: 1;
}

.calc-forma-btn.active,
.calc-forma-btn:hover {
    background: #1a5fc8;
    color: #fff;
    border-color: #1a5fc8;
}

/* ── Divider ── */
.calc-divider {
    height: 1px;
    background: #e3e9f2;
    margin: 4px 0 20px;
}

/* ── Sliders ── */
.calc-slider-group { margin-bottom: 22px; }

.calc-slider-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 10px;
}

.calc-slider-label { font-size: 13px; font-weight: 600; color: #2a3a5c; }

.calc-slider-value { font-size: 13px; font-weight: 700; color: #1a5fc8; white-space: nowrap; }

.calc-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 5px;
    border-radius: 99px;
    background: linear-gradient(to right, #1a5fc8 var(--pct, 26%), #d0d9ea var(--pct, 26%));
    outline: none;
    cursor: pointer;
}

.calc-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #ffffff;
    border: 3px solid #1a5fc8;
    box-shadow: 0 2px 6px rgba(26,95,200,0.25);
    cursor: pointer;
    transition: transform 0.15s;
}
.calc-slider::-webkit-slider-thumb:hover { transform: scale(1.15); }

.calc-slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #ffffff;
    border: 3px solid #1a5fc8;
    box-shadow: 0 2px 6px rgba(26,95,200,0.25);
    cursor: pointer;
}

/* ── Panel resultado ── */
.calc-result-eyebrow {
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.12em;
    color: #ffffff;
    margin-bottom: 8px;
    text-transform: uppercase;
    text-align: center;
}

.calc-result-volumen {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 8px;
    margin-bottom: 32px;
}

.calc-result-num {
    font-size: 58px;
    font-weight: 900;
    color: #ffffff;
    letter-spacing: -1px;
    line-height: 1;
}

.calc-result-unit {
    font-size: 18px;
    font-weight: 500;
    color: rgba(255,255,255,0.75);
}

/* ── Botón CTA ── */
.calc-cta-btn {
    display: block;
    width: 100%;
    padding: 15px 20px;
    background: linear-gradient(135deg, #f47c20 0%, #e05a00 100%);
    color: #ffffff !important;
    font-size: 14px;
    font-weight: 800;
    letter-spacing: 0.02em;
    text-align: center;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(244,124,32,0.35);
    transition: transform 0.15s, box-shadow 0.15s, filter 0.15s;
    text-decoration: none !important;
}

.calc-cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 22px rgba(244,124,32,0.50);
    filter: brightness(1.06);
    color: #ffffff !important;
    text-decoration: none !important;
}

.calc-cta-btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(244,124,32,0.30);
}

/* ── Responsive ── */
@media (max-width: 640px) {
    .calc-panel { padding: 24px 20px; }
    .calc-panel--controls { border-right: none; border-bottom: 1px solid #e8edf5; }
    .calc-result-num { font-size: 42px; }
}

/* ── Animación número ── */
@keyframes calc-pulse {
    0%   { opacity: 0.5; transform: scale(0.97); }
    100% { opacity: 1;   transform: scale(1); }
}
.calc-result-num.animating {
    animation: calc-pulse 0.22s ease-out forwards;
}

/* ── Accesibilidad ── */
.calc-slider:focus-visible,
.calc-forma-btn:focus-visible,
.calc-cta-btn:focus-visible {
    outline: 3px solid #f47c20;
    outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
    .calc-cta-btn,
    .calc-slider::-webkit-slider-thumb { transition: none; }
    .calc-result-num.animating { animation: none; }
}