/* ============================================================================
   Botones (tema noxtr) — rediseño 2026-06
   - Cada variante solo define --btn-bg / --btn-color; el resto lo hereda de .btn.
   - Hover/active por filter:brightness → funciona con cualquier color de variante.
   - Colores desde las variables del tema (style.css), con fallback.
   - btn-light usa las vars --theme-surface* → se adapta solo al tema oscuro.
   - OJO: .disabled NO lleva pointer-events:none (hay JS que escucha el click
     sobre botones .disabled para avisar al usuario).
   ========================================================================== */

form .btn { min-width: 176px; }   /* compat: ancho mínimo histórico en formularios */

.btn {
    --btn-bg: var(--primary, #007bff);
    --btn-color: #fff;

    box-sizing: border-box;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45em;
    padding: 8px 18px;
    font-family: var(--font-family-sans-serif, 'Montserrat', sans-serif);
    font-size: 0.95em;
    font-weight: 500;
    line-height: 1.35;
    color: var(--btn-color);
    background-color: var(--btn-bg);
    border: 1px solid transparent;
    border-radius: 9px;
    cursor: pointer;
    white-space: nowrap;
    text-decoration: none;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.12), inset 0 1px 0 rgba(255, 255, 255, 0.12);
    transition: filter 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease,
                background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.btn:hover:not(.disabled):not(:disabled) {
    filter: brightness(1.08);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.18), inset 0 1px 0 rgba(255, 255, 255, 0.12);
}
.btn:active:not(.disabled):not(:disabled) {
    filter: brightness(0.96);
    transform: translateY(0);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.15);
}
.btn:focus-visible {
    outline: 2px solid var(--btn-bg);
    outline-offset: 2px;
}

.btn .fa { color: inherit; }

/* ------------------------------ Variantes ------------------------------ */

.btn.btn-primary   { --btn-bg: var(--primary, #007bff); }
.btn.btn-secondary,
.btn.secondary     { --btn-bg: var(--secondary, #6c757d); }
.btn.btn-danger    { --btn-bg: var(--danger, #dc3545); }
.btn.btn-success,
.btn.btn-ok        { --btn-bg: var(--success, #28a745); }
.btn.btn-info      { --btn-bg: var(--cyan, #17a2b8); }
.btn.btn-dark      { --btn-bg: var(--gray-dark, #343a40); }
.btn.btn-reset     { --btn-bg: var(--gray, #6c757d); }
.btn.btn-link-o    { --btn-bg: #3a84de; }

.btn.btn-warning {
    --btn-bg: var(--warning, #ffc107);
    --btn-color: #3a2d00;
}

/* Botón "claro": superficie del tema → correcto también en tema oscuro */
.btn.btn-light {
    --btn-bg: var(--theme-surface, #f8f9fa);
    --btn-color: var(--theme-text, #333);
    border-color: var(--theme-surface-border, #d8dee6);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.07);
}

/* Outline/ghost: transparente con borde; se rellena al hover */
.btn.btn-outline {
    background-color: transparent;
    color: var(--btn-bg);
    border-color: var(--btn-bg);
    box-shadow: none;
}
.btn.btn-outline:hover:not(.disabled):not(:disabled) {
    background-color: var(--btn-bg);
    color: var(--btn-color, #fff);
    filter: none;
}

/* Botón-enlace (también se usa como pestaña: subrayado + .active) */
.btn.btn-link {
    background-color: transparent;
    color: var(--link, #2077a2);
    border: 0;
    border-bottom: 2px solid transparent;
    border-radius: 0;
    padding: 7px 10px;
    box-shadow: none;
}
.btn.btn-link:hover:not(.disabled):not(:disabled) {
    color: var(--link-hover, #e8576c);
    border-bottom-color: currentColor;
    filter: none;
    transform: none;
    box-shadow: none;
}
.btn-link.active {
    border-bottom-color: var(--primary, #0089c7);
    color: var(--theme-text, #222);
    font-weight: 600;
}

/* ------------------------------- Tamaños ------------------------------- */

.btn.btn-small { font-size: 0.8em;  padding: 4px 10px;  border-radius: 7px;  gap: 0.35em; }
.btn.btn-large { font-size: 1.15em; padding: 12px 24px; border-radius: 12px; }
.btn.btn-block { display: flex; width: 100%; }

/* ------------------------------ Deshabilitado -------------------------- */

.btn.disabled,
.btn:disabled {
    --btn-bg: #c3cad3;
    --btn-color: #5d6671;
    cursor: not-allowed;
    box-shadow: none;
    filter: none;
    transform: none;
}