#drom-ai-btn {
    position: fixed;
    bottom: 36px;
    right: 16px;
    width: 64px;
    height: 64px;
    cursor: pointer;
    z-index: 2000;
    filter: drop-shadow(0 4px 16px rgba(0, 229, 255, .4));
    transition: transform .2s, filter .2s;
    user-select: none
}

#drom-ai-btn:hover {
    transform: scale(1.08);
    filter: drop-shadow(0 4px 24px rgba(0, 229, 255, .7))
}

#drom-ai-btn.hablando {
    filter: drop-shadow(0 4px 24px rgba(0, 229, 255, .9))
}

.robot-sprite {
    position: relative;
    width: 64px;
    height: 64px
}

.robot-sprite img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain
}

.robot-boca-abierta {
    display: none
}

.robot-ojos-cerrados {
    display: none
}

.robot-parpadeo {
    animation: parpadeo 4s infinite;
    display: block !important
}

.hablando .robot-boca-abierta {
    display: block;
    animation: boca .18s steps(1) infinite
}

.hablando .robot-boca-cerrada {
    display: none
}

@keyframes boca {
    0% {
        display: block
    }

    50% {
        display: none
    }

    100% {
        display: block
    }
}

@keyframes parpadeo {

    0%,
    92%,
    100% {
        opacity: 0
    }

    94%,
    98% {
        opacity: 1
    }
}

#drom-ai-panel {
    position: fixed;
    bottom: 110px;
    right: 16px;
    width: 300px;
    max-height: 420px;
    background: rgba(10, 13, 20, .96);
    border: 1px solid rgba(0, 229, 255, .3);
    border-radius: 14px;
    display: none;
    flex-direction: column;
    z-index: 2000;
    backdrop-filter: blur(12px);
    box-shadow: 0 8px 32px rgba(0, 229, 255, .15);
    overflow: hidden;
    font-family: 'JetBrains Mono', monospace
}

#drom-ai-panel.open {
    display: flex
}

.ai-panel-header {
    padding: 10px 14px;
    border-bottom: 1px solid rgba(0, 229, 255, .15);
    font-size: 10px;
    color: var(--drom);
    letter-spacing: .15em;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 8px
}

.ai-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--drom);
    box-shadow: 0 0 6px var(--drom);
    animation: pulse 2s infinite
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1
    }

    50% {
        opacity: .3
    }
}

.ai-messages {
    flex: 1;
    overflow-y: auto;
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 8px
}

.ai-messages::-webkit-scrollbar {
    width: 3px
}

.ai-messages::-webkit-scrollbar-thumb {
    background: rgba(0, 229, 255, .2)
}

.ai-msg {
    font-size: 11px;
    line-height: 1.5;
    padding: 8px 10px;
    border-radius: 8px;
    max-width: 90%
}

.ai-msg.bot {
    background: rgba(0, 229, 255, .08);
    border: 1px solid rgba(0, 229, 255, .15);
    color: #e8ecf5;
    align-self: flex-start
}

.ai-msg.user {
    background: rgba(245, 200, 66, .08);
    border: 1px solid rgba(245, 200, 66, .15);
    color: var(--gold);
    align-self: flex-end;
    text-align: right
}

.ai-msg.thinking {
    color: var(--muted);
    font-style: italic;
    border: none;
    background: none;
    font-size: 10px
}

.ai-input-row {
    display: flex;
    gap: 6px;
    padding: 10px 12px;
    border-top: 1px solid rgba(0, 229, 255, .1)
}

.ai-input {
    flex: 1;
    background: rgba(255, 255, 255, .05);
    border: 1px solid rgba(0, 229, 255, .2);
    color: var(--text);
    padding: 7px 10px;
    border-radius: 7px;
    font-size: 11px;
    font-family: 'JetBrains Mono', monospace;
    outline: none;
    transition: border-color .15s
}

.ai-input:focus {
    border-color: var(--drom)
}

.ai-send-btn {
    background: var(--drom);
    border: none;
    color: #0a0d14;
    padding: 7px 12px;
    border-radius: 7px;
    cursor: pointer;
    font-size: 12px;
    font-weight: 700;
    transition: opacity .15s
}

.ai-send-btn:hover {
    opacity: .85
}

.ai-send-btn:disabled {
    opacity: .4;
    cursor: default
}

/* ── Sistema de Skins ── */
#drom-ai-btn .skin-robot {
    display: block;
}

#drom-ai-btn .skin-kogane {
    display: none;
}

#drom-ai-btn.skin-kogane-active .skin-robot {
    display: none;
}

#drom-ai-btn.skin-kogane-active .skin-kogane {
    display: block;
}

/* Kogane sprite */
.kogane-sprite {
    position: relative;
    width: 64px;
    height: 64px;
}

.kogane-sprite img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: opacity .1s;
}

.kogane-frente {
    opacity: 1;
}

.kogane-izq {
    opacity: 0;
}

.kogane-der {
    opacity: 0;
}

/* Idle — frente */
.kogane-sprite.idle .kogane-frente {
    opacity: 1;
}

.kogane-sprite.idle .kogane-izq {
    opacity: 0;
}

.kogane-sprite.idle .kogane-der {
    opacity: 0;
}

/* Hablando — alterna izq/der */
.kogane-sprite.hablando .kogane-frente {
    opacity: 0;
}

.kogane-sprite.hablando .kogane-izq {
    animation: kogane-habla .3s steps(1) infinite;
}

.kogane-sprite.hablando .kogane-der {
    animation: kogane-habla .3s steps(1) infinite .15s;
}

@keyframes kogane-habla {
    0% {
        opacity: 1;
    }

    50% {
        opacity: 0;
    }

    100% {
        opacity: 1;
    }
}

/* Pensando — mira a la izquierda */
.kogane-sprite.pensando .kogane-frente {
    opacity: 0;
}

.kogane-sprite.pensando .kogane-izq {
    opacity: 1;
}

.kogane-sprite.pensando .kogane-der {
    opacity: 0;
}

/* Selector de skin en panel */
.ai-skin-selector {
    display: flex;
    gap: 6px;
    padding: 6px 12px;
    border-bottom: 1px solid rgba(0, 229, 255, .1);
    align-items: center;
}

.ai-skin-btn {
    width: 28px;
    height: 28px;
    border-radius: 6px;
    border: 1px solid var(--border);
    background: var(--surface2);
    cursor: pointer;
    overflow: hidden;
    padding: 2px;
    transition: border-color .15s;
}

.ai-skin-btn:hover {
    border-color: var(--drom);
}

.ai-skin-btn.active {
    border-color: var(--drom);
    background: rgba(0, 229, 255, .1);
}

.ai-skin-btn img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.ai-skin-label {
    font-size: 8px;
    color: #fff;
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: .1em;
    text-transform: uppercase;
}

/* Bot draggable */
#drom-ai-btn {
    cursor: grab;
}

#drom-ai-btn.dragging {
    cursor: grabbing;
    opacity: .85;
    transition: none !important;
}

/* ── Skin Kusakabe ── */
#drom-ai-btn .skin-kusakabe {
    display: none;
}

#drom-ai-btn.skin-kusakabe-active .skin-robot {
    display: none;
}

#drom-ai-btn.skin-kusakabe-active .skin-kogane {
    display: none;
}

#drom-ai-btn.skin-kusakabe-active .skin-kusakabe {
    display: block;
}

/* Estados Kusakabe — usando opacity para evitar conflicto con display inline */
.skin-kusakabe img {
    opacity: 0;
    transition: opacity .05s;
}

/* Idle — solo frente */
.skin-kusakabe.idle .kogane-frente {
    opacity: 1;
}

/* Pensando — solo izq */
.skin-kusakabe.pensando .kogane-izq {
    opacity: 1;
}

/* Hablando — grit alterna */
.skin-kusakabe.hablando .kogane-grit-izq {
    animation: kusa-grit .4s steps(1) infinite;
}

.skin-kusakabe.hablando .kogane-grit-der {
    animation: kusa-grit .4s steps(1) infinite .2s;
}

@keyframes kusa-grit {
    0% {
        opacity: 1;
    }

    50% {
        opacity: 0;
    }

    100% {
        opacity: 1;
    }
}