.esquina-fa {
    position: fixed;
    z-index: 99999;
    display: flex;
    align-items: flex-end;
    gap: 12px;
    opacity: 0;
    transition: opacity 0.3s ease;
    font-family: inherit;
    line-height: 1.4;
}

.esquina-fa[hidden] {
    display: none;
}

.esquina-fa *,
.esquina-fa *::before,
.esquina-fa *::after {
    box-sizing: border-box;
}

/* Posiciones */

.esquina-fa--bottom-right {
    right: var(--esquina-fa-x, 20px);
    bottom: var(--esquina-fa-y, 20px);
    flex-direction: row-reverse;
}

.esquina-fa--bottom-left {
    left: var(--esquina-fa-x, 20px);
    bottom: var(--esquina-fa-y, 20px);
    flex-direction: row;
}

.esquina-fa--top-right {
    right: var(--esquina-fa-x, 20px);
    top: var(--esquina-fa-y, 20px);
    flex-direction: row-reverse;
    align-items: flex-start;
}

.esquina-fa--top-left {
    left: var(--esquina-fa-x, 20px);
    top: var(--esquina-fa-y, 20px);
    flex-direction: row;
    align-items: flex-start;
}

/* Botón */

.esquina-fa__toggle {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    margin: 0;
    padding: 0;
    border: 0;
    border-radius: 50%;
    background: #2563eb;
    color: #fff;
    font-size: 24px;
    line-height: 1;
    cursor: pointer;
    box-shadow: 0 6px 16px rgba(37, 99, 235, 0.35);
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.esquina-fa__toggle:hover {
    transform: scale(1.08);
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.45);
}

.esquina-fa__toggle:focus-visible,
.esquina-fa__close:focus-visible,
.esquina-fa__link:focus-visible {
    outline: 2px solid #2563eb;
    outline-offset: 2px;
}

.esquina-fa--rounded .esquina-fa__toggle {
    border-radius: 14px;
}

.esquina-fa__toggle-icon {
    display: inline-flex;
    color: #fff;
}

.esquina-fa__toggle-icon svg,
.esquina-fa__reopen svg {
    display: block;
}

/* Panel */

.esquina-fa__panel {
    width: 300px;
    max-width: calc(100vw - 48px);
    overflow: hidden;
    border-radius: 14px;
    background: #fff;
    color: #111827;
    box-shadow: 0 20px 45px rgba(0, 0, 0, 0.22);
    opacity: 0;
    visibility: hidden;
    transform: scale(0.9);
    transition: transform 0.2s ease, opacity 0.2s ease, visibility 0.2s ease;
}

.esquina-fa--bottom-right .esquina-fa__panel {
    transform-origin: bottom right;
}

.esquina-fa--bottom-left .esquina-fa__panel {
    transform-origin: bottom left;
}

.esquina-fa--top-right .esquina-fa__panel {
    transform-origin: top right;
}

.esquina-fa--top-left .esquina-fa__panel {
    transform-origin: top left;
}

.esquina-fa.is-open .esquina-fa__panel {
    opacity: 1;
    visibility: visible;
    transform: scale(1);
}

/* Header */

.esquina-fa__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: #f3f4f6;
    font-size: 15px;
    font-weight: 600;
}

.esquina-fa__close {
    margin: 0;
    padding: 0 4px;
    border: 0;
    background: none;
    color: #4b5563;
    font-size: 22px;
    line-height: 1;
    cursor: pointer;
}

.esquina-fa__close:hover {
    color: #111827;
}

/* Lista */

.esquina-fa__list {
    margin: 0;
    padding: 8px;
    list-style: none;
}

.esquina-fa__item {
    margin: 0;
    padding: 0;
}

.esquina-fa__item + .esquina-fa__item {
    border-top: 1px solid #f3f4f6;
}

.esquina-fa__link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px;
    border-radius: 8px;
    color: inherit;
    text-decoration: none;
    transition: background-color 0.15s ease;
}

.esquina-fa__link:hover {
    background: #f9fafb;
}

.esquina-fa__icon {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    object-fit: cover;
    border-radius: 8px;
}

.esquina-fa__icon--svg {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #fff;
}

.esquina-fa__icon--svg svg {
    display: block;
}

.esquina-fa__meta {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.esquina-fa__meta strong {
    font-size: 14px;
    color: #111827;
}

.esquina-fa__meta small {
    font-size: 12px;
    color: #6b7280;
}

/* Pestaña para reabrir tras cerrar con la X */

.esquina-fa__reopen {
    display: none;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 44px;
    margin: 0;
    padding: 0;
    border: 0;
    background: #2563eb;
    color: #fff;
    font-size: 14px;
    line-height: 1;
    cursor: pointer;
    opacity: 0.7;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.18);
    transition: opacity 0.15s ease, width 0.15s ease;
}

.esquina-fa__reopen:hover,
.esquina-fa__reopen:focus-visible {
    width: 34px;
    opacity: 1;
}

.esquina-fa__reopen:focus-visible {
    outline: 2px solid #2563eb;
    outline-offset: 2px;
}

.esquina-fa--bottom-right .esquina-fa__reopen,
.esquina-fa--top-right .esquina-fa__reopen {
    margin-right: calc(var(--esquina-fa-x, 20px) * -1);
    border-radius: 8px 0 0 8px;
}

.esquina-fa--bottom-left .esquina-fa__reopen,
.esquina-fa--top-left .esquina-fa__reopen {
    margin-left: calc(var(--esquina-fa-x, 20px) * -1);
    border-radius: 0 8px 8px 0;
}

.esquina-fa.is-dismissed .esquina-fa__toggle,
.esquina-fa.is-dismissed .esquina-fa__panel {
    display: none;
}

.esquina-fa.is-dismissed .esquina-fa__reopen {
    display: inline-flex;
}

/* Móvil */

@media (max-width: 600px) {
    .esquina-fa__panel {
        width: calc(100vw - 40px);
    }

    .esquina-fa__toggle {
        width: 48px;
        height: 48px;
        font-size: 20px;
    }
}