/**
 * GlobalCSS — Buttons
 * Botones reutilizables: primario, secundario, sm, icon-only, export, load-more.
 * Ref: design-style-guide.md §6 Botones
 */

/* ── Primario — LA acción principal ── */

.gs-btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-lg);
    border: none;
    border-radius: 6px;
    background: var(--color-primary, #007aff);
    color: #fff;
    font-size: var(--gs-font-body);
    font-weight: 500;
    line-height: 1;
    cursor: pointer;
    white-space: nowrap;
    box-sizing: border-box;
    transition: filter 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                transform 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.gs-btn-primary:hover {
    filter: brightness(1.08);
    transform: translateY(-0.5px);
}

.gs-btn-primary:active {
    transform: translateY(0);
    filter: brightness(0.95);
}

.gs-btn-primary:focus-visible {
    outline: 3px solid var(--color-primary-subtle, rgba(0,122,255,0.35));
    outline-offset: 1px;
}

/* ── Secundario — acciones de soporte ── */

.gs-btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-lg);
    border: 1px solid var(--color-border, #d2d2d7);
    border-radius: 6px;
    background: transparent;
    color: var(--color-text-secondary, #6e6e73);
    font-size: var(--gs-font-body);
    font-weight: 500;
    line-height: 1;
    cursor: pointer;
    white-space: nowrap;
    box-sizing: border-box;
    transition: color 0.18s ease,
                border-color 0.18s ease,
                background-color 0.18s ease;
}

.gs-btn-secondary:hover {
    border-color: var(--color-primary, #007aff);
    color: var(--color-primary, #007aff);
}

.gs-btn-secondary:active {
    opacity: 0.65;
    transition-duration: 0.06s;
}

.gs-btn-secondary:focus-visible {
    outline: 3px solid var(--color-primary-subtle, rgba(0,122,255,0.35));
    outline-offset: 1px;
}

/* ── Pequeño ── */

.gs-btn-sm {
    height: 30px;
    padding: 0 var(--space-md);
    font-size: var(--gs-font-label);
}

/* ── Icon button (cuadrado, solo icono) ── */

.gs-btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    padding: 0;
    border: none;
    border-radius: 8px;
    background: var(--color-primary, #007aff);
    color: #fff;
    font-size: var(--gs-font-label);
    cursor: pointer;
    flex-shrink: 0;
    box-sizing: border-box;
    transition: filter 0.15s ease,
                transform 0.15s ease;
}

.gs-btn-icon:hover {
    filter: brightness(1.1);
}

.gs-btn-icon:active {
    transform: scale(0.92);
    filter: brightness(0.92);
}

.gs-btn-icon:focus-visible {
    outline: 3px solid var(--color-primary-subtle, rgba(0,122,255,0.35));
    outline-offset: 2px;
}

/* ── Icon button ghost (transparente, para toolbars y subheaders) ── */

.gs-btn-icon--ghost {
    background: transparent;
    color: var(--color-text-tertiary, #aeaeb2);
    border: 1px solid var(--color-border-light, #e5e5ea);
}

.gs-btn-icon--ghost:hover {
    border-color: var(--color-primary, #007aff);
    color: var(--color-primary, #007aff);
    background: transparent;
    filter: none;
}

.gs-btn-icon--ghost:active {
    opacity: 0.65;
    transform: none;
    filter: none;
}

/* ── Export button (borde + icono + texto) ── */

.gs-btn-export {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    height: 30px;
    padding: 0 var(--space-lg);
    border: 1px solid var(--color-border-light, #d2d2d7);
    border-radius: 8px;
    background: var(--color-bg, #fff);
    color: var(--color-text-secondary, #6e6e73);
    font-size: var(--gs-font-caption);
    font-weight: 500;
    cursor: pointer;
    white-space: nowrap;
    box-sizing: border-box;
    transition: color 0.18s ease,
                border-color 0.18s ease,
                background-color 0.18s ease;
}

.gs-btn-export i {
    font-size: var(--gs-font-label);
}

.gs-btn-export:hover {
    color: var(--color-success, #34c759);
    border-color: var(--color-success, #34c759);
    background: color-mix(in srgb, var(--color-success, #34c759) 5%, var(--color-bg, #fff));
}

.gs-btn-export:active {
    opacity: 0.65;
    transition-duration: 0.06s;
}

.gs-btn-export:focus-visible {
    outline: 3px solid var(--color-primary-subtle, rgba(0,122,255,0.35));
    outline-offset: 1px;
}

/* ── Load more (botón de carga paginada) ── */

.gs-btn-load-more {
    padding: var(--space-sm) var(--space-2xl);
    border: 1px solid var(--color-border-light, #d2d2d7);
    border-radius: 8px;
    background: var(--color-bg, #fff);
    color: var(--color-text-secondary, #6e6e73);
    font-size: var(--gs-font-label);
    font-weight: 500;
    cursor: pointer;
    transition: color 0.18s ease,
                border-color 0.18s ease,
                background-color 0.18s ease;
}

.gs-btn-load-more:hover {
    color: var(--color-primary, #007aff);
    border-color: var(--color-primary, #007aff);
    background: color-mix(in srgb, var(--color-primary, #007aff) 4%, var(--color-bg, #fff));
}

.gs-btn-load-more:disabled {
    opacity: 0.5;
    cursor: default;
}

/* ── Variantes de color semántico ── */

.gs-btn-primary--danger {
    background: var(--color-error, #ff3b30);
}

.gs-btn-secondary--success:hover {
    border-color: var(--color-success, #34c759);
    color: var(--color-success, #34c759);
}