.dcb-widget {
    --dcb-primary: #2c3e50;
    --dcb-user-bg: #e8f1ff;
    --dcb-assistant-bg: #f4f4f4;
    --dcb-surface: #ffffff;
    --dcb-text: #1f2937;
    color: var(--dcb-text);
}

.dcb-widget-shell {
    max-width: 420px;
    border: 1px solid #d9d9d9;
    border-radius: 14px;
    overflow: hidden;
    background: var(--dcb-surface);
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.12);
}

.dcb-widget-floating {
    position: fixed;
    right: 20px;
    bottom: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 12px;
}

.dcb-widget-floating .dcb-widget-shell {
    width: min(420px, calc(100vw - 32px));
}

.dcb-widget-floating .dcb-widget-shell[hidden] {
    display: none !important;
}

.dcb-widget-embedded {
    margin: 24px 0;
}

.dcb-widget-embedded .dcb-widget-shell {
    width: 100%;
    max-width: 100%;
}

.dcb-widget-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 14px 16px;
    background: var(--dcb-primary);
    color: #fff;
}

.dcb-widget-header strong {
    font-size: 15px;
    line-height: 1.3;
}

.dcb-widget-header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.dcb-widget-toggle,
.dcb-widget-close,
.dcb-new-chat,
.dcb-form button,
.dcb-suggested-item {
    appearance: none;
    border: 0;
    cursor: pointer;
    transition: transform 0.18s ease, background-color 0.18s ease, color 0.18s ease, box-shadow 0.18s ease, opacity 0.18s ease;
}

.dcb-widget-toggle:hover,
.dcb-widget-close:hover,
.dcb-new-chat:hover,
.dcb-form button:hover,
.dcb-suggested-item:hover {
    transform: translateY(-1px);
}

.dcb-widget-toggle:focus-visible,
.dcb-widget-close:focus-visible,
.dcb-new-chat:focus-visible,
.dcb-form button:focus-visible,
.dcb-suggested-item:focus-visible,
.dcb-form textarea:focus-visible {
    outline: 2px solid color-mix(in srgb, var(--dcb-primary) 65%, white 35%);
    outline-offset: 2px;
}

.dcb-widget-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 52px;
    padding: 12px 18px;
    border-radius: 999px;
    background: var(--dcb-primary);
    color: #fff;
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.18);
    font-weight: 600;
}

.dcb-widget-toggle:hover {
    background: color-mix(in srgb, var(--dcb-primary) 88%, white 12%);
    box-shadow: 0 16px 30px rgba(0, 0, 0, 0.22);
}

.dcb-widget-toggle-label {
    font-size: 14px;
    line-height: 1.2;
}

.dcb-new-chat,
.dcb-widget-close {
    border-radius: 8px;
}

.dcb-new-chat {
    background: rgba(255, 255, 255, 0.16);
    color: #fff;
    padding: 8px 10px;
    font-size: 13px;
}

.dcb-new-chat:hover {
    background: rgba(255, 255, 255, 0.26);
}

.dcb-widget-close {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    background: rgba(255, 255, 255, 0.16);
    color: #fff;
    font-size: 20px;
    line-height: 1;
}

.dcb-widget-close:hover {
    background: rgba(255, 255, 255, 0.26);
}

.dcb-messages {
    height: 320px;
    overflow-y: auto;
    padding: 14px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    background: var(--dcb-surface);
}

.dcb-message {
    padding: 10px 12px;
    border-radius: 12px;
    line-height: 1.45;
    white-space: pre-wrap;
    max-width: 88%;
}

.dcb-message-user {
    background: var(--dcb-user-bg);
    align-self: flex-end;
}

.dcb-message-assistant {
    background: var(--dcb-assistant-bg);
    align-self: flex-start;
}

.dcb-message a {
    color: inherit;
    font-weight: 600;
    text-decoration: underline;
    overflow-wrap: anywhere;
}

.dcb-message a:hover,
.dcb-message a:focus-visible {
    text-decoration-thickness: 2px;
}

.dcb-form {
    padding: 0 14px 14px;
    background: var(--dcb-surface);
}

.dcb-form textarea {
    width: 100%;
    resize: vertical;
    min-height: 92px;
    margin: 0;
    padding: 12px;
    border: 1px solid #d0d7de;
    border-radius: 10px;
    color: var(--dcb-text);
    background: #fff;
    box-sizing: border-box;
    transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.dcb-form textarea:hover,
.dcb-form textarea:focus {
    border-color: color-mix(in srgb, var(--dcb-primary) 45%, #d0d7de 55%);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--dcb-primary) 12%, transparent 88%);
}

.dcb-form-actions {
    display: flex;
    justify-content: flex-end;
    margin-top: 10px;
}

.dcb-form button {
    background: var(--dcb-primary);
    color: #fff;
    padding: 10px 16px;
    font-weight: 600;
    border-radius: 8px;
}

.dcb-form button:hover {
    background: color-mix(in srgb, var(--dcb-primary) 88%, white 12%);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.14);
}

.dcb-suggested {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 0 16px 12px;
}

.dcb-suggested[hidden] {
    display: none;
}

.dcb-suggested-item {
    border: 1px solid var(--dcb-primary);
    background: transparent;
    color: var(--dcb-primary);
    border-radius: 999px;
    padding: 7px 12px;
    font: inherit;
}

.dcb-suggested-item:hover {
    background: color-mix(in srgb, var(--dcb-primary) 10%, white 90%);
    box-shadow: 0 8px 18px rgba(0, 0, 0, 0.08);
}

.dcb-suggested-item:disabled,
.dcb-new-chat:disabled,
.dcb-form button:disabled,
.dcb-widget-toggle:disabled,
.dcb-widget-close:disabled {
    opacity: .6;
    cursor: default;
    transform: none;
    box-shadow: none;
}

.dcb-message-typing {
    display: flex;
    align-items: center;
    gap: 10px;
}

.dcb-typing-dots {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.dcb-typing-dots span {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: currentColor;
    opacity: .35;
    animation: dcbTypingPulse 1.2s infinite ease-in-out;
}

.dcb-typing-dots span:nth-child(2) {
    animation-delay: .15s;
}

.dcb-typing-dots span:nth-child(3) {
    animation-delay: .3s;
}

.dcb-typing-text {
    font-size: 13px;
    opacity: .85;
}

@keyframes dcbTypingPulse {
    0%, 80%, 100% { transform: scale(.8); opacity: .3; }
    40% { transform: scale(1); opacity: .9; }
}

@media (max-width: 640px) {
    .dcb-widget-floating {
        right: 12px;
        bottom: 12px;
        left: 12px;
        align-items: stretch;
    }

    .dcb-widget-floating .dcb-widget-shell {
        width: 100%;
    }

    .dcb-widget-toggle {
        width: fit-content;
        max-width: 100%;
        align-self: flex-end;
    }

    .dcb-widget-header {
        flex-wrap: wrap;
    }

    .dcb-widget-header-actions {
        width: 100%;
        justify-content: space-between;
    }

    .dcb-message {
        max-width: 94%;
    }
}