.intro {
    max-width: 700px;
    margin: 0 auto 25px;
    line-height: 1.55;
    font-size: 1.05em;
    color: var(--demo-neutral);
}

/* Panel explicativo */
.how-it-works {
    background: linear-gradient(145deg, var(--demo-surface-alt), color-mix(in srgb, var(--demo-accent) 6%, var(--demo-surface-alt)));
    border: 1px solid color-mix(in srgb, var(--demo-accent) 25%, var(--demo-border));
    border-radius: var(--demo-radius-lg);
    padding: var(--demo-spacing-lg);
    margin-bottom: 2rem;
    text-align: left;
}

.how-it-works h2 {
    text-align: center;
    margin: 0 0 1rem;
    color: var(--demo-accent);
    font-size: 1.45em;
    letter-spacing: .5px;
}

.explanation-columns {
    display: flex;
    gap: clamp(1rem, 3vw, 1.6rem);
    justify-content: space-between;
    flex-wrap: wrap;
}

.explanation-columns .column {
    flex: 1 1 240px;
    min-width: 230px;
}

.explanation-columns h3 {
    font-size: 1.02em;
    color: var(--demo-accent);
    border-bottom: 2px solid color-mix(in srgb, var(--demo-accent) 35%, var(--demo-border));
    padding-bottom: 4px;
    margin: 0 0 .6rem;
    font-weight: 600;
}

.explanation-columns p {
    font-size: .9em;
    line-height: 1.5;
    color: var(--demo-text);
}

h1 {
    color: var(--demo-accent);
    margin: 0 0 1.25rem;
    font-size: clamp(1.65rem, 3vw, 2rem);
    letter-spacing: .5px;
}

#app-container {
    max-width: 960px;
    margin: 0 auto 2.5rem;
    background: var(--demo-surface);
    border: 1px solid var(--demo-border);
    border-radius: var(--demo-radius-lg);
    box-shadow: var(--demo-shadow-sm);
    transition: transform var(--demo-transition), box-shadow var(--demo-transition);
    overflow: hidden;
}

#app-container:hover {
    transform: translateY(-3px);
    box-shadow: var(--demo-shadow);
}

#patient-container {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
    margin: 0 0 2rem;
    padding: 1.15rem;
    border: 1px solid var(--demo-border);
    border-radius: calc(var(--demo-radius) + 4px);
    background: linear-gradient(135deg, color-mix(in srgb, var(--demo-surface-alt) 90%, #fff 10%), var(--demo-surface));
    min-height: 160px;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, .04), inset 0 -12px 35px rgba(0, 0, 0, .05);
}

.patient {
    width: 35px;
    height: 35px;
    border-radius: 50%;
    background: var(--demo-surface-muted);
    transition: .35s background-color, var(--demo-transition);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: .7rem;
    font-weight: 600;
    box-shadow: 0 2px 4px -1px rgba(0, 0, 0, .25);
    border: 2px solid color-mix(in srgb, var(--demo-text) 15%, var(--demo-surface));
}

.predicted-attend {
    background: var(--demo-accent);
}

.predicted-miss {
    background: var(--demo-danger);
}

.explanation {
    font-size: .85em;
    color: var(--demo-neutral);
    max-width: 520px;
    margin: -.4rem auto 1rem;
    line-height: 1.5;
}

/* (Legacy original blocks eliminados) */

.color-box {
    display: inline-block;
    width: 12px;
    height: 12px;
    border-radius: 3px;
    vertical-align: middle;
    margin: 0 2px;
    box-shadow: 0 0 0 1px var(--demo-border);
}

.controls-panel {
    padding: clamp(1.5rem, 2.5vw, 2rem);
    border-top: 1px solid var(--demo-border);
    background: color-mix(in srgb, var(--demo-surface) 88%, var(--demo-accent) 12%);
    display: flex;
    flex-direction: column;
    gap: clamp(1.2rem, 2vw, 1.8rem);
}

#threshold-slider {
    width: min(640px, 100%);
    cursor: pointer;
    margin: .6rem auto 0;
}

.button-group {
    display: flex;
    gap: .9rem;
    justify-content: center;
    margin: 0 0 2rem;
    flex-wrap: wrap;
}

#reset-btn,
#find-optimal-btn {
    margin: 0;
}

#dashboard {
    margin: 0 auto;
    width: 100%;
    background: var(--demo-surface);
    border: 1px solid var(--demo-border);
    border-radius: var(--demo-radius-lg);
    box-shadow: var(--demo-shadow-sm);
    padding: clamp(1.2rem, 2vw, 1.6rem);
    display: grid;
    grid-template-columns: minmax(280px, 1fr) minmax(240px, 1fr);
    gap: clamp(1.1rem, 2vw, 1.6rem);
    align-items: stretch;
}

#confusion-matrix {
    display: grid;
    grid-template-columns: auto repeat(2, minmax(100px, 1fr));
    gap: .55rem;
    align-items: center;
    background: var(--demo-surface-alt);
    border: 1px solid color-mix(in srgb, var(--demo-border) 80%, transparent);
    border-radius: var(--demo-radius);
    padding: clamp(.9rem, 2vw, 1.2rem);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, .04);
}

#confusion-matrix .cell {
    padding: .75rem;
    border: 1px solid color-mix(in srgb, var(--demo-border) 80%, transparent);
    background: var(--demo-surface);
    border-radius: var(--demo-radius-sm);
    text-align: center;
    font-weight: 600;
    min-width: 88px;
    cursor: help;
    font-size: .85rem;
    box-shadow: 0 6px 14px -8px rgba(0, 0, 0, .35);
    transition: transform var(--demo-transition), box-shadow var(--demo-transition);
}

#confusion-matrix .header {
    background: linear-gradient(145deg, var(--demo-surface-muted), var(--demo-surface-alt));
    font-weight: 600;
    cursor: default;
    letter-spacing: .3px;
    text-transform: uppercase;
    font-size: .72rem;
    color: color-mix(in srgb, var(--demo-text) 72%, var(--demo-bg));
}

#confusion-matrix .empty {
    background: transparent;
    cursor: default;
    border: none;
}

.fn-cell {
    background: color-mix(in srgb, var(--demo-danger) 22%, var(--demo-surface));
    color: var(--demo-danger);
    font-weight: 600;
    box-shadow: 0 10px 20px -12px rgba(220, 53, 69, .55);
}

.fn-cell,
#confusion-matrix .cell:not(.header):not(.empty) {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 64px;
    font-size: 1.1rem;
}

#confusion-matrix .cell:not(.header):not(.empty):hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 22px -10px rgba(0, 0, 0, .38);
}

#outcomes {
    border-left: none;
    padding: clamp(1rem, 2vw, 1.3rem);
    min-width: 250px;
    background: var(--demo-surface-alt);
    border: 1px solid color-mix(in srgb, var(--demo-border) 82%, transparent);
    border-radius: var(--demo-radius);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, .04), 0 6px 14px -10px rgba(0, 0, 0, .32);
}

#outcomes h4 {
    margin: 0 0 1.1rem;
    color: var(--demo-accent);
    font-size: 1.1rem;
}

#outcomes p {
    margin: .55rem 0;
    font-size: .9rem;
}

#outcomes span {
    font-weight: 700;
}

.total-cost {
    margin-top: 1.2rem !important;
    padding-top: .85rem;
    border-top: 1px solid color-mix(in srgb, var(--demo-border) 65%, transparent);
    font-size: 1.15rem !important;
    color: var(--demo-accent);
    font-weight: 700;
}

.formula {
    font-size: .78rem;
    color: var(--demo-neutral);
    margin-top: 1.1rem;
    background: linear-gradient(135deg, var(--demo-surface), var(--demo-surface-alt));
    padding: .55rem .75rem;
    border-radius: var(--demo-radius-sm);
    text-align: center;
}

#optimal-graph-container {
    display: none;
    margin-top: 2rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--demo-border);
}

#threshold-value {
    color: var(--demo-accent);
    font-weight: 700;
}

@media (max-width:800px) {
    #dashboard {
        grid-template-columns: 1fr;
    }
}