/* ═══ Gerbi — baila por la web ═══ */
.ep-gerbi-root {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 85;
    overflow: hidden;
}

.ep-sound-toggle {
    position: fixed;
    right: max(0.75rem, env(safe-area-inset-right, 0px));
    bottom: calc(10.5rem + env(safe-area-inset-bottom, 0px));
    left: auto;
    width: 2.55rem;
    height: 2.55rem;
    margin: 0;
    padding: 0;
    border: 1.5px solid rgba(0, 96, 152, 0.16);
    border-radius: 9999px;
    background: #fff;
    box-shadow: 0 6px 16px rgba(0, 96, 152, 0.1);
    cursor: pointer;
    pointer-events: auto;
    z-index: 88;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.05rem;
    line-height: 1;
    transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.ep-sound-toggle:hover {
    transform: translateY(-2px);
    border-color: rgba(224, 128, 0, 0.5);
}

.ep-sound-toggle:focus-visible {
    outline: 2px solid var(--blue, #2563eb);
    outline-offset: 3px;
}

.ep-sound-toggle.is-sound-on {
    background: linear-gradient(135deg, #fff8e6, #e8f5fc);
    border-color: rgba(0, 112, 176, 0.35);
}

.ep-sound-toggle.is-sound-off {
    opacity: 0.92;
}

.ep-gerbi {
    position: fixed;
    left: 0;
    bottom: calc(0.65rem + env(safe-area-inset-bottom, 0px));
    right: auto;
    margin: 0;
    padding: 0;
    border: none;
    background: transparent;
    cursor: pointer;
    pointer-events: auto;
    width: 9.5rem;
    height: auto;
    z-index: 86;
    will-change: transform;
    transform: translate3d(-160px, 0, 0);
}

.ep-gerbi.ep-gerbi--static {
    left: max(0.35rem, env(safe-area-inset-left, 0px));
    right: auto;
    bottom: calc(5.5rem + env(safe-area-inset-bottom, 0px));
    width: 10.5rem;
    height: 10.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transform: none;
    will-change: auto;
    background: transparent;
    border: none;
    box-shadow: none;
    border-radius: 0;
    overflow: visible;
}
.ep-gerbi.ep-gerbi--static .ep-gerbi-glow {
    display: none;
}
.ep-gerbi.ep-gerbi--static .ep-gerbi-img {
    border: none;
    border-radius: 0;
    box-shadow: none;
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
    filter: drop-shadow(0 4px 14px rgba(0, 96, 152, 0.18))
            drop-shadow(0 2px 8px rgba(224, 128, 0, 0.12));
}

@media (min-width: 768px) {
    .ep-gerbi.ep-gerbi--static {
        width: 12rem;
        height: 12rem;
        bottom: calc(1rem + env(safe-area-inset-bottom, 0px));
    }
}

.ep-gerbi:focus-visible {
    outline: 2px solid var(--blue, #2563eb);
    outline-offset: 4px;
    border-radius: 0.75rem;
}

.ep-gerbi.is-facing-left .ep-gerbi-img {
    transform: scaleX(-1);
}

.ep-gerbi-glow {
    position: absolute;
    inset: 12% 8% 10%;
    border-radius: 50%;
    background: radial-gradient(ellipse at 50% 55%,
        rgba(255, 255, 255, 0.8) 0%,
        rgba(191, 219, 254, 0.25) 55%,
        transparent 78%);
    filter: blur(5px);
    z-index: 0;
    pointer-events: none;
}

.ep-gerbi-img {
    position: relative;
    z-index: 1;
    display: block;
    width: 100%;
    height: auto;
    object-fit: contain;
    filter: brightness(1.03) saturate(1.06) drop-shadow(0 5px 12px rgba(100, 116, 139, 0.24));
    pointer-events: none;
    user-select: none;
    -webkit-user-drag: none;
}

.ep-gerbi.is-energized .ep-gerbi-img {
    filter: brightness(1.07) saturate(1.12)
        drop-shadow(0 6px 14px rgba(37, 99, 235, 0.25));
}

.ep-gerbi.is-moving .ep-gerbi-img {
    filter: brightness(1.05) saturate(1.08)
        drop-shadow(0 8px 16px rgba(37, 99, 235, 0.22));
}

.ep-gerbi.is-dancing .ep-gerbi-img {
    transition: filter 0.2s ease;
}

/* ═══ Gerbi profesor TeX (curso LaTeX) ═══ */
.ep-gerbi-tex-root {
    position: fixed;
    right: max(0.75rem, env(safe-area-inset-right, 0px));
    bottom: calc(0.85rem + env(safe-area-inset-bottom, 0px));
    z-index: 80;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.45rem;
    pointer-events: none;
}

.ep-gerbi-tex-ask {
    pointer-events: auto;
    appearance: none;
    border: 1px solid rgba(13, 148, 136, 0.35);
    background: #fff;
    color: #0f766e;
    font: inherit;
    font-size: 0.72rem;
    font-weight: 800;
    padding: 0.35rem 0.7rem;
    border-radius: 999px;
    cursor: pointer;
    box-shadow: 0 6px 16px rgba(13, 148, 136, 0.12);
}

.ep-gerbi-tex-ask:hover { border-color: #0d9488; background: #f0fdfa; }

.ep-gerbi-tex {
    pointer-events: auto;
    appearance: none;
    border: none;
    background: transparent;
    padding: 0;
    cursor: pointer;
    width: 6.5rem;
    position: relative;
}

.ep-gerbi-tex:focus-visible {
    outline: 2px solid #0d9488;
    outline-offset: 3px;
    border-radius: 0.75rem;
}

.ep-gerbi-tex-img {
    display: block;
    width: 100%;
    height: auto;
    filter: drop-shadow(0 6px 14px rgba(15, 118, 110, 0.22));
    user-select: none;
    -webkit-user-drag: none;
}

.ep-gerbi-tex.is-energized .ep-gerbi-tex-img {
    filter: brightness(1.06) saturate(1.1)
        drop-shadow(0 8px 16px rgba(13, 148, 136, 0.3));
}

.ep-gerbi-tex-bubble {
    pointer-events: auto;
    max-width: min(15rem, 72vw);
    padding: 0.6rem 0.8rem;
    background: #fff;
    border: 2px solid rgba(13, 148, 136, 0.28);
    border-radius: 1rem 1rem 0.25rem 1rem;
    box-shadow: 0 10px 24px rgba(15, 118, 110, 0.12);
    opacity: 0;
    transform: translateY(6px) scale(0.94);
    transition: opacity 0.25s ease, transform 0.3s cubic-bezier(0.34, 1.4, 0.64, 1);
}

.ep-gerbi-tex-bubble.is-open {
    opacity: 1;
    transform: translateY(0) scale(1);
}

.ep-gerbi-tex-bubble[hidden] { display: none !important; }

.ep-gerbi-tex-bubble-text {
    margin: 0;
    font-size: 0.78rem;
    font-weight: 650;
    line-height: 1.45;
    color: #134e4a;
}

.ep-gerbi-tex-mood {
    pointer-events: none;
    font-size: 0.72rem;
    font-weight: 800;
    padding: 0.2rem 0.55rem;
    border-radius: 999px;
    background: #fff;
    border: 1px solid rgba(13, 148, 136, 0.3);
    color: #0f766e;
    box-shadow: 0 4px 12px rgba(15, 118, 110, 0.12);
}

.ep-gerbi-tex-root.is-ok .ep-gerbi-tex {
    animation: ep-gerbi-tex-bounce 0.55s ease;
}
.ep-gerbi-tex-root.is-ok .ep-gerbi-tex-mood {
    background: #ecfdf5;
    border-color: #6ee7b7;
    color: #047857;
}
.ep-gerbi-tex-root.is-ko .ep-gerbi-tex-mood {
    background: #fff8e6;
    border-color: #fdba74;
    color: #e08000;
}
.ep-gerbi-tex-root.is-ko .ep-gerbi-tex-img {
    filter: grayscale(0.15) drop-shadow(0 6px 14px rgba(15, 118, 110, 0.18));
}

@keyframes ep-gerbi-tex-bounce {
    0%   { transform: translateY(0) scale(1); }
    35%  { transform: translateY(-10px) scale(1.06); }
    70%  { transform: translateY(2px) scale(0.98); }
    100% { transform: translateY(0) scale(1); }
}

@media (max-width: 720px) {
    .ep-gerbi-tex { width: 5.4rem; }
}

@media (prefers-reduced-motion: reduce) {
    .ep-gerbi-tex-root.is-ok .ep-gerbi-tex { animation: none; }
}

.ep-gerbi-bubble {
    position: fixed;
    left: 12px;
    bottom: calc(11.25rem + env(safe-area-inset-bottom, 0px));
    max-width: min(17.5rem, 82vw);
    padding: 0.75rem 0.9rem;
    background: #fff;
    border: 2px solid #f0c000;
    border-radius: 1rem;
    box-shadow: 0 12px 28px rgba(0, 112, 176, 0.16);
    pointer-events: auto;
    z-index: 87;
    opacity: 0;
    transform: translateY(8px) scale(0.92);
    transition: opacity 0.28s ease, transform 0.35s cubic-bezier(0.34, 1.4, 0.64, 1);
}
/* Flecha del bocadillo apuntando hacia fuera (abajo, hacia Gerbi) */
.ep-gerbi-bubble::after {
    content: '';
    position: absolute;
    left: 1.35rem;
    bottom: -10px;
    width: 14px;
    height: 14px;
    background: #fff;
    border-right: 2px solid #f0c000;
    border-bottom: 2px solid #f0c000;
    transform: rotate(45deg);
    border-radius: 0 0 2px 0;
}

.ep-gerbi-bubble.is-open {
    opacity: 1;
    transform: translateY(0) scale(1);
}

.ep-gerbi-bubble[hidden] { display: none !important; }

.ep-gerbi-bubble-text {
    margin: 0 0 0.4rem;
    font-size: 0.875rem;
    font-weight: 650;
    line-height: 1.45;
    color: #1e3a5f;
}

.ep-gerbi-bubble-link {
    display: inline-block;
    font-size: 0.78rem;
    font-weight: 800;
    color: #0070b0;
    text-decoration: none;
    padding: 0.15rem 0;
}

.ep-gerbi-bubble-link:hover { color: #e08000; text-decoration: underline; }

html[data-theme="dark"] .ep-gerbi-bubble {
    background: #1e293b;
    border-color: #f0c000;
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.45);
}
html[data-theme="dark"] .ep-gerbi-bubble::after {
    background: #1e293b;
    border-right-color: #f0c000;
    border-bottom-color: #f0c000;
}
html[data-theme="dark"] .ep-gerbi-bubble-text { color: #f1f5f9; }
html[data-theme="dark"] .ep-gerbi-bubble-link { color: #f0c000; }
html[data-theme="dark"] .ep-gerbi-bubble-link:hover { color: #fde68a; }
html[data-theme="dark"] .ep-sound-toggle {
    background: #1e293b;
    border-color: rgba(240, 192, 0, 0.45);
    color: #f1f5f9;
}

@media (max-width: 720px) {
    .ep-gerbi { width: 7.5rem; }
    .ep-sound-toggle {
        width: 2.35rem;
        height: 2.35rem;
        bottom: calc(8.6rem + env(safe-area-inset-bottom, 0px));
        font-size: 0.95rem;
    }
    .ep-gerbi-bubble { bottom: calc(9.5rem + env(safe-area-inset-bottom, 0px)); }
}

@media (prefers-reduced-motion: reduce) {
    .ep-gerbi-bubble { transition: none; }
    .ep-sound-toggle { transition: none; }
}

html[data-theme="dark"] .ep-gerbi-glow {
    background: radial-gradient(ellipse at 50% 55%,
        rgba(255, 255, 255, 0.08) 0%, rgba(59, 130, 246, 0.12) 55%, transparent 78%);
}

html[data-theme="dark"] .ep-gerbi-bubble {
    background: #1e293b;
    border-color: #f0c000;
}
html[data-theme="dark"] .ep-gerbi-bubble::after {
    background: #1e293b;
    border-right-color: #f0c000;
    border-bottom-color: #f0c000;
}

html[data-theme="dark"] .ep-gerbi-bubble-text { color: #f1f5f9; }

html[data-theme="dark"] .ep-sound-toggle {
    background: #1e293b;
    border-color: #475569;
    color: #f1f5f9;
}

html[data-theme="dark"] .ep-sound-toggle.is-sound-on {
    background: linear-gradient(135deg, #1e3a5f, #1e293b);
    border-color: #60a5fa;
}