/* Reglas de Botones Senior (Bloque DASH-1 442) */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 30px; /* Mediano por defecto (90% de la app) */
    padding: 0 15px;
    gap: 8px; /* Icono seguido de título */
    border-radius: 3px; /* Esquinas semiredondeadas (Reducción 50% aplicada) */
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
    line-height: 1;
    white-space: nowrap;
    user-select: none;
}

/* --- Tamaños Estándar --- */
.btn-sm {
    height: 24px;
    padding: 0 10px;
    font-size: var(--font-size-xs);
    gap: 4px;
}

.btn-md {
    height: 30px;
    padding: 0 15px;
    font-size: var(--font-size-sm);
    gap: 8px;
}

.btn-lg {
    height: 40px;
    padding: 0 20px;
    font-size: var(--font-size-base);
    gap: 10px;
}

/* --- Ancho completo --- */
.btn-block {
    width: 100%;
    justify-content: center;
}

/* --- Variantes de Color --- */
.btn-primary {
    background-color: var(--primary-color);
    color: #ffffff;
}
.btn-primary:hover {
    background-color: #2980b9;
}

.btn-secondary {
    background-color: #f1f5f9;
    color: #475569;
    border-color: #e2e8f0;
}
.btn-secondary:hover {
    background-color: #e2e8f0;
    color: #1e293b;
}

.btn-danger {
    background-color: var(--danger-color);
    color: #ffffff;
}
.btn-danger:hover {
    background-color: #c0392b;
}

.btn-success {
    background-color: var(--success-color);
    color: #ffffff;
}
.btn-success:hover {
    background-color: #27ae60;
}

.btn-warning {
    background-color: var(--warning-color);
    color: #000000;
}
.btn-warning:hover {
    background-color: #f39c12;
}

.btn-dark {
    background-color: var(--dark-color);
    color: #ffffff;
}
.btn-dark:hover {
    background-color: #1a252f;
}

.btn-outline {
    background-color: transparent;
    border-color: #e2e8f0;
    color: #64748b;
}
.btn-outline:hover {
    background-color: #f8fafc;
    border-color: #cbd5e1;
    color: #334155;
}

/* ── btn-ghost: solo icono sin fondo ni borde — para botones de topbar ──────── */
/* Combinar siempre con btn-icon. Tamaños: btn-sm (24px) · normal (30px) · btn-lg (40px) */
.btn-ghost {
    background-color: transparent;
    border-color: transparent;
    color: #64748b;
    box-shadow: none;
}
.btn-ghost:hover {
    background-color: #f1f5f9;
    border-color: transparent;
    color: #334155;
}
.btn-ghost:active {
    background-color: #e2e8f0;
}
.dark .btn-ghost {
    color: #94a3b8;
}
.dark .btn-ghost:hover {
    background-color: #1e293b;
    color: #f1f5f9;
}
.dark .btn-ghost:active {
    background-color: #334155;
}

/* Estados */
.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* Iconos en botones */
.btn i, .btn svg.lucide {
    /* El tamaño lo controla layout.css globalmente */
}

/* Botón sólo icono — cuadrado (ancho = alto) */
.btn-icon {
    width: 30px;
    padding: 0;
}
.btn-icon.btn-sm {
    width: 24px;
    padding: 0;
}
.btn-icon.btn-lg {
    width: 40px;
    padding: 0;
}

/* --- Soporte Modo Oscuro (DASH-1 442) --- */
.dark .btn-secondary {
    background-color: #1e293b; /* Slate 800 */
    color: #f1f5f9; /* Slate 100 */
    border-color: #334155; /* Slate 700 */
}
.dark .btn-secondary:hover {
    background-color: #334155; /* Slate 700 */
    color: #ffffff;
    border-color: #475569; /* Slate 600 */
}

.dark .btn-outline {
    background-color: transparent;
    border-color: #334155; /* Slate 700 */
    color: #94a3b8; /* Slate 400 */
}
.dark .btn-outline:hover {
    background-color: #1e293b; /* Slate 800 */
    border-color: #475569; /* Slate 600 */
    color: #f1f5f9; /* Slate 100 */
}

.dark .btn-primary:hover {
    background-color: #2980b9;
}

.dark .btn-danger:hover {
    background-color: #c0392b;
}

.dark .btn-success:hover {
    background-color: #27ae60;
}

.dark .btn-warning:hover {
    background-color: #f39c12;
}

.dark .btn-dark {
    background-color: #0f172a;
    border-color: #1e293b;
    color: #f8fafc;
}