/* Shared tokens — overridden per widget via inline CSS vars */
.usl-chatbot-widget {
    --usl-cw-primary: #1e3a8a;
    --usl-cw-secondary: #7c3aed;
    --usl-cw-accent: #fbbf24;
    --usl-cw-text: #ffffff;
    --usl-cw-mid: #6366f1;
    --usl-cw-shadow: rgba(30, 58, 138, 0.42);
    --usl-cw-shadow-deep: rgba(30, 58, 138, 0.35);
    --usl-cw-pulse: rgba(124, 58, 237, 0.45);
    --usl-cw-icon: #4338ca;
    --usl-cw-tooltip-bg: #0f172a;

    position: fixed;
    bottom: calc(var(--usl-fab-bottom, 1.5rem) + env(safe-area-inset-bottom, 0px));
    right: var(--usl-fab-right, 1.5rem);
    z-index: 999;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.2rem;
    width: 4.25rem;
    height: 4.25rem;
    padding: 0;
    border: none;
    border-radius: 999px;
    background: linear-gradient(145deg, var(--usl-cw-primary) 0%, var(--usl-cw-mid) 42%, var(--usl-cw-secondary) 100%);
    color: var(--usl-cw-text);
    text-decoration: none;
    box-shadow:
        0 4px 0 var(--usl-cw-shadow-deep),
        0 14px 28px var(--usl-cw-shadow),
        0 0 0 1px rgba(255, 255, 255, 0.12) inset;
    transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.35s ease;
    animation: uslChatbotFloat 4s ease-in-out infinite;
    overflow: visible;
}

.usl-chatbot-widget:hover {
    animation: none;
    transform: translateY(-4px) scale(1.06);
    box-shadow:
        0 6px 0 var(--usl-cw-shadow-deep),
        0 20px 40px var(--usl-cw-shadow),
        0 0 0 1px rgba(255, 255, 255, 0.2) inset;
    color: var(--usl-cw-text);
}

.usl-chatbot-widget:focus-visible {
    outline: 3px solid var(--usl-cw-accent);
    outline-offset: 4px;
}

.usl-chatbot-widget--preview {
    position: relative !important;
    bottom: auto !important;
    right: auto !important;
    animation: none !important;
    flex-shrink: 0;
}

/* ── AI Assistant design ── */
.usl-chatbot-widget--ai-assistant .usl-chatbot-widget__ring {
    position: absolute;
    inset: -3px;
    border-radius: inherit;
    background: conic-gradient(from 210deg, var(--usl-cw-accent), var(--usl-cw-secondary), var(--usl-cw-mid), var(--usl-cw-accent));
    opacity: 0.85;
    z-index: -2;
    animation: uslChatbotRingSpin 8s linear infinite;
}

.usl-chatbot-widget--ai-assistant .usl-chatbot-widget__ring::after {
    content: "";
    position: absolute;
    inset: 2px;
    border-radius: inherit;
    background: linear-gradient(145deg, var(--usl-cw-primary) 0%, var(--usl-cw-mid) 42%, var(--usl-cw-secondary) 100%);
}

.usl-chatbot-widget--ai-assistant .usl-chatbot-widget__pulse,
.usl-chatbot-widget--classic .usl-chatbot-widget__pulse {
    position: absolute;
    inset: -6px;
    border-radius: inherit;
    background: radial-gradient(circle, var(--usl-cw-pulse) 0%, transparent 70%);
    animation: uslChatbotPulse 2.8s ease-out infinite;
    z-index: -3;
    pointer-events: none;
}

.usl-chatbot-widget--ai-assistant .usl-chatbot-widget__shine {
    position: absolute;
    inset: 0;
    border-radius: inherit;
    overflow: hidden;
    pointer-events: none;
}

.usl-chatbot-widget--ai-assistant .usl-chatbot-widget__shine::before {
    content: "";
    position: absolute;
    top: -50%;
    left: -120%;
    width: 60%;
    height: 200%;
    background: linear-gradient(105deg, transparent 40%, rgba(255, 255, 255, 0.35) 50%, transparent 60%);
    transform: skewX(-18deg);
    animation: uslChatbotShine 5s ease-in-out infinite;
}

.usl-chatbot-widget--ai-assistant .usl-chatbot-widget__icon-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.35rem;
    height: 2.35rem;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.96);
    box-shadow: 0 2px 8px rgba(15, 23, 42, 0.15);
    transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.usl-chatbot-widget--ai-assistant:hover .usl-chatbot-widget__icon-wrap {
    transform: scale(1.08) rotate(-4deg);
}

.usl-chatbot-widget--ai-assistant .usl-chatbot-widget__icon {
    width: 1.65rem;
    height: 1.65rem;
    display: block;
}

.usl-chatbot-widget--ai-assistant .usl-chatbot-widget__bubble {
    color: var(--usl-cw-icon);
}

.usl-chatbot-widget--ai-assistant .usl-chatbot-widget__spark--1 {
    animation: uslChatbotSpark 2.2s ease-in-out infinite;
    transform-origin: 38px 13px;
}

.usl-chatbot-widget--ai-assistant .usl-chatbot-widget__spark--2 {
    animation: uslChatbotSpark 2.2s ease-in-out infinite 0.9s;
    transform-origin: 8px 30px;
}

.usl-chatbot-widget--ai-assistant .usl-chatbot-widget__eye {
    animation: uslChatbotBlink 5s ease-in-out infinite;
}

.usl-chatbot-widget--ai-assistant .usl-chatbot-widget__tooltip {
    position: absolute;
    right: calc(100% + 0.85rem);
    top: 50%;
    transform: translateY(-50%) translateX(8px);
    padding: 0.45rem 0.75rem;
    border-radius: 0.65rem;
    background: var(--usl-cw-tooltip-bg);
    color: #f8fafc;
    font-size: 0.78rem;
    font-weight: 600;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.35);
    transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
}

.usl-chatbot-widget--ai-assistant .usl-chatbot-widget__tooltip::after {
    content: "";
    position: absolute;
    left: 100%;
    top: 50%;
    transform: translateY(-50%);
    border: 6px solid transparent;
    border-left-color: var(--usl-cw-tooltip-bg);
}

.usl-chatbot-widget--ai-assistant:hover .usl-chatbot-widget__tooltip,
.usl-chatbot-widget--ai-assistant:focus-visible .usl-chatbot-widget__tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateY(-50%) translateX(0);
}

/* ── Classic design ── */
.usl-chatbot-widget--classic {
    gap: 0.15rem;
}

.usl-chatbot-widget--classic .usl-chatbot-widget__fa {
    font-size: 1.45rem;
    line-height: 1;
    filter: drop-shadow(0 1px 2px rgba(15, 23, 42, 0.2));
}

/* ── Minimal design ── */
.usl-chatbot-widget--minimal {
    width: 3.75rem;
    height: 3.75rem;
    animation: none;
    box-shadow: 0 8px 24px var(--usl-cw-shadow);
}

.usl-chatbot-widget--minimal:hover {
    transform: translateY(-3px) scale(1.05);
}

.usl-chatbot-widget--minimal .usl-chatbot-widget__fa {
    font-size: 1.55rem;
    line-height: 1;
}

/* ── Pill design ── */
.usl-chatbot-widget--pill {
    flex-direction: row;
    width: auto;
    min-width: 9.5rem;
    height: auto;
    padding: 0.65rem 1.15rem 0.65rem 0.75rem;
    gap: 0.55rem;
    border-radius: 999px;
    animation: none;
}

.usl-chatbot-widget--pill:hover {
    transform: translateY(-3px) scale(1.03);
}

.usl-chatbot-widget--pill .usl-chatbot-widget__pill-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    font-size: 0.95rem;
}

.usl-chatbot-widget--pill .usl-chatbot-widget__pill-text {
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    white-space: nowrap;
}

.usl-chatbot-widget--pill .usl-chatbot-widget__status {
    top: 0.15rem;
    right: 0.35rem;
}

/* ── Bubble design ── */
.usl-chatbot-widget--bubble {
    width: 4.5rem;
    height: 4rem;
    border-radius: 1.35rem 1.35rem 0.35rem 1.35rem;
    animation: uslChatbotBubbleFloat 3.5s ease-in-out infinite;
    gap: 0.1rem;
}

.usl-chatbot-widget--bubble:hover {
    animation: none;
}

.usl-chatbot-widget--bubble .usl-chatbot-widget__bubble-tail {
    position: absolute;
    bottom: -0.45rem;
    right: 0.85rem;
    width: 0;
    height: 0;
    border-left: 0.55rem solid transparent;
    border-right: 0.55rem solid transparent;
    border-top: 0.65rem solid var(--usl-cw-secondary);
    filter: drop-shadow(0 2px 2px var(--usl-cw-shadow-deep));
}

.usl-chatbot-widget--bubble .usl-chatbot-widget__fa {
    font-size: 1.35rem;
    line-height: 1;
}

.usl-chatbot-widget--bubble .usl-chatbot-widget__label {
    font-size: 0.72rem;
    font-weight: 800;
}

/* Shared label + status */
.usl-chatbot-widget__label {
    font-size: 0.58rem;
    font-weight: 800;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    line-height: 1;
    text-shadow: 0 1px 2px rgba(15, 23, 42, 0.25);
}

.usl-chatbot-widget__status {
    position: absolute;
    top: 0.35rem;
    right: 0.35rem;
    width: 0.72rem;
    height: 0.72rem;
    border-radius: 50%;
    background: #22c55e;
    border: 2px solid #fff;
    box-shadow: 0 0 0 2px rgba(34, 197, 94, 0.35);
    animation: uslChatbotStatusPulse 2s ease-in-out infinite;
}

@keyframes uslChatbotFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

@keyframes uslChatbotBubbleFloat {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-4px) rotate(-2deg); }
}

@keyframes uslChatbotRingSpin {
    to { transform: rotate(360deg); }
}

@keyframes uslChatbotPulse {
    0% { opacity: 0.55; transform: scale(1); }
    70% { opacity: 0; transform: scale(1.45); }
    100% { opacity: 0; transform: scale(1.45); }
}

@keyframes uslChatbotShine {
    0%, 72% { left: -120%; }
    100% { left: 140%; }
}

@keyframes uslChatbotSpark {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.45; transform: scale(0.75); }
}

@keyframes uslChatbotBlink {
    0%, 92%, 100% { transform: scaleY(1); }
    95% { transform: scaleY(0.12); }
}

@keyframes uslChatbotStatusPulse {
    0%, 100% { box-shadow: 0 0 0 2px rgba(34, 197, 94, 0.35); }
    50% { box-shadow: 0 0 0 5px rgba(34, 197, 94, 0.15); }
}

/* Stack back-to-top above chatbot when both are present */
body:has(#usl-chatbot-widget) {
    --usl-fab-bottom: 1.5rem;
    --usl-fab-right: 1.5rem;
    --usl-fab-gap: 0.85rem;
    --usl-fab-chatbot-h: 5.5rem;
}

body:has(#usl-chatbot-widget.usl-chatbot-widget--classic) {
    --usl-fab-chatbot-h: 5.25rem;
}

body:has(#usl-chatbot-widget.usl-chatbot-widget--pill) {
    --usl-fab-chatbot-h: 3.25rem;
}

body:has(#usl-chatbot-widget.usl-chatbot-widget--bubble) {
    --usl-fab-chatbot-h: 5.25rem;
}

body:has(#usl-chatbot-widget.usl-chatbot-widget--minimal) {
    --usl-fab-chatbot-h: 4rem;
}

body:has(#usl-chatbot-widget):has(#back-to-top) #back-to-top {
    bottom: calc(
        var(--usl-fab-bottom)
        + env(safe-area-inset-bottom, 0px)
        + var(--usl-fab-chatbot-h)
        + var(--usl-fab-gap)
    );
    right: calc(var(--usl-fab-right) + 0.625rem);
    z-index: 998;
}

@media (max-width: 767px) {
    body:has(#usl-chatbot-widget) {
        --usl-fab-bottom: 1.1rem;
        --usl-fab-right: 1.1rem;
        --usl-fab-gap: 0.75rem;
        --usl-fab-chatbot-h: 4.25rem;
    }

    body:has(#usl-chatbot-widget.usl-chatbot-widget--pill) {
        --usl-fab-chatbot-h: 3rem;
    }

    body:has(#usl-chatbot-widget):has(#back-to-top) #back-to-top {
        right: calc(var(--usl-fab-right) + 0.375rem);
    }

    .usl-chatbot-widget:not(.usl-chatbot-widget--pill):not(.usl-chatbot-widget--preview) {
        width: 3.75rem;
        height: 3.75rem;
        gap: 0;
    }

    .usl-chatbot-widget--ai-assistant:not(.usl-chatbot-widget--preview) .usl-chatbot-widget__icon-wrap {
        width: 2.1rem;
        height: 2.1rem;
    }

    .usl-chatbot-widget--ai-assistant:not(.usl-chatbot-widget--preview) .usl-chatbot-widget__icon {
        width: 1.45rem;
        height: 1.45rem;
    }

    .usl-chatbot-widget--pill:not(.usl-chatbot-widget--preview) {
        min-width: auto;
        padding: 0.55rem 0.85rem 0.55rem 0.65rem;
    }

    .usl-chatbot-widget--pill:not(.usl-chatbot-widget--preview) .usl-chatbot-widget__pill-text {
        font-size: 0.75rem;
    }

    .usl-chatbot-widget__label,
    .usl-chatbot-widget__tooltip {
        display: none;
    }

    .usl-chatbot-widget__status {
        top: 0.2rem;
        right: 0.2rem;
        width: 0.6rem;
        height: 0.6rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    .usl-chatbot-widget,
    .usl-chatbot-widget__ring,
    .usl-chatbot-widget__pulse,
    .usl-chatbot-widget__shine::before,
    .usl-chatbot-widget__spark--1,
    .usl-chatbot-widget__spark--2,
    .usl-chatbot-widget__eye,
    .usl-chatbot-widget__status {
        animation: none;
    }

    .usl-chatbot-widget:hover {
        transform: translateY(-2px);
    }
}

@media print {
    .usl-chatbot-widget {
        display: none !important;
    }
}

/* Admin design picker cards */
.chatbot-design-card {
    position: relative;
    display: block;
    cursor: pointer;
    border: 2px solid #e5e7eb;
    border-radius: 0.75rem;
    padding: 1rem;
    background: #fff;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.chatbot-design-card:hover {
    border-color: #c7d2fe;
    background: #fafafe;
}

.chatbot-design-card.is-selected {
    border-color: #6366f1;
    background: #eef2ff;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.chatbot-design-card input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.chatbot-design-card__icon {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 999px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--preview-primary, #1e3a8a), var(--preview-secondary, #7c3aed));
    color: #fff;
    font-size: 1rem;
    margin-bottom: 0.65rem;
}

.chatbot-design-card__pill-icon {
    border-radius: 999px;
    width: auto;
    padding: 0 0.75rem;
    font-size: 0.75rem;
    height: 2rem;
}

.chatbot-design-card__bubble-icon {
    border-radius: 0.75rem 0.75rem 0.2rem 0.75rem;
}

.chatbot-preview-stage {
    position: relative;
    min-height: 11rem;
    border-radius: 0.75rem;
    background:
        linear-gradient(135deg, rgba(99, 102, 241, 0.06), rgba(124, 58, 237, 0.04)),
        repeating-linear-gradient(-45deg, transparent, transparent 8px, rgba(99, 102, 241, 0.03) 8px, rgba(99, 102, 241, 0.03) 16px);
    border: 1px dashed #c7d2fe;
    display: flex;
    align-items: flex-end;
    justify-content: flex-end;
    padding: 1.5rem;
    overflow: hidden;
}

.chatbot-color-field {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.chatbot-color-field input[type="color"] {
    width: 3rem;
    height: 2.5rem;
    padding: 0.15rem;
    border: 1px solid #d1d5db;
    border-radius: 0.5rem;
    cursor: pointer;
    background: #fff;
}

.chatbot-color-field input[type="text"] {
    flex: 1;
    font-family: ui-monospace, monospace;
    font-size: 0.875rem;
}