:root {
    --pp-chat-z-index: 1085;
    --pp-chat-bg: #ffffff;
    --pp-chat-panel: #f5f7fb;
    --pp-chat-border: #d8dee8;
    --pp-chat-text: #1f2937;
    --pp-chat-muted: #6b7280;
    --pp-chat-primary: #1f4fd6;
    --pp-chat-primary-dark: #173aa0;
    --pp-chat-user: #1f4fd6;
    --pp-chat-agent: #ffffff;
    --pp-chat-danger: #b42318;
    --pp-chat-success: #027a48;
    --pp-chat-shadow: 0 24px 64px rgba(15, 23, 42, 0.18);
}

.pp-chat-root {
    position: fixed;
    right: 24px;
    bottom: 24px;
    z-index: var(--pp-chat-z-index);
    font-family: "Space Grotesk", sans-serif;
    color: var(--pp-chat-text);
}

.pp-chat-root * {
    box-sizing: border-box;
}

.pp-chat-button {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    border: 0;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--pp-chat-primary), #4f7df7);
    color: #fff;
    padding: 14px 18px;
    box-shadow: var(--pp-chat-shadow);
    cursor: pointer;
    font-weight: 600;
}

.pp-chat-button:hover {
    background: linear-gradient(135deg, var(--pp-chat-primary-dark), var(--pp-chat-primary));
}

.pp-chat-button-badge {
    position: absolute;
    top: -6px;
    right: -4px;
    min-width: 20px;
    height: 20px;
    padding: 0 6px;
    border-radius: 999px;
    background: #f04438;
    color: #fff;
    font-size: 12px;
    line-height: 20px;
    text-align: center;
}

.pp-chat-panel {
    width: min(380px, calc(100vw - 24px));
    height: min(620px, calc(100vh - 110px));
    display: none;
    flex-direction: column;
    background: var(--pp-chat-bg);
    border: 1px solid rgba(216, 222, 232, 0.9);
    border-radius: 22px;
    box-shadow: var(--pp-chat-shadow);
    overflow: hidden;
}

.pp-chat-root.pp-chat-open .pp-chat-panel {
    display: flex;
}

.pp-chat-root.pp-chat-open .pp-chat-button {
    display: none;
}

.pp-chat-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    padding: 18px 18px 14px;
    background: linear-gradient(180deg, #eef4ff 0%, #f9fbff 100%);
    border-bottom: 1px solid var(--pp-chat-border);
}

.pp-chat-title {
    margin: 0;
    font-size: 16px;
    font-weight: 700;
}

.pp-chat-subtitle {
    margin: 4px 0 0;
    font-size: 13px;
    color: var(--pp-chat-muted);
}

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

.pp-chat-secondary-button {
    border: 1px solid var(--pp-chat-border);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.92);
    color: var(--pp-chat-text);
    padding: 8px 12px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
}

.pp-chat-icon-button {
    width: 34px;
    height: 34px;
    border: 1px solid var(--pp-chat-border);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.9);
    color: var(--pp-chat-text);
    cursor: pointer;
}

.pp-chat-status {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    background: var(--pp-chat-panel);
    border-bottom: 1px solid var(--pp-chat-border);
    font-size: 13px;
    color: var(--pp-chat-muted);
}

.pp-chat-status-dot {
    width: 10px;
    height: 10px;
    border-radius: 999px;
    background: var(--pp-chat-success);
    flex: 0 0 auto;
}

.pp-chat-status[data-status="closed"] .pp-chat-status-dot {
    background: var(--pp-chat-danger);
}

.pp-chat-status[data-status="loading"] .pp-chat-status-dot {
    background: #f79009;
}

.pp-chat-status[data-status="error"] .pp-chat-status-dot {
    background: var(--pp-chat-danger);
}

.pp-chat-closed-actions,
.pp-chat-error,
.pp-chat-create-error {
    display: none;
    padding: 12px 18px;
    border-bottom: 1px solid var(--pp-chat-border);
    background: #fff7ed;
}

.pp-chat-error {
    background: #fef3f2;
    color: var(--pp-chat-danger);
}

.pp-chat-create-error {
    background: #fef3f2;
    color: var(--pp-chat-danger);
}

.pp-chat-root.pp-chat-closed .pp-chat-closed-actions,
.pp-chat-root.pp-chat-has-error .pp-chat-error,
.pp-chat-root.pp-chat-create-failed .pp-chat-create-error {
    display: block;
}

.pp-chat-closed-button {
    border: 0;
    border-radius: 12px;
    background: var(--pp-chat-primary);
    color: #fff;
    padding: 10px 14px;
    font-weight: 600;
    cursor: pointer;
}

.pp-chat-retry-button {
    border: 1px solid rgba(31, 79, 214, 0.18);
    border-radius: 10px;
    background: #fff;
    color: var(--pp-chat-primary);
    padding: 8px 12px;
    font-weight: 600;
    cursor: pointer;
}

.pp-chat-create-error-text {
    margin: 0 0 10px;
    font-size: 13px;
    line-height: 1.45;
}

.pp-chat-create-error-text a {
    color: var(--pp-chat-primary);
    font-weight: 600;
}

.pp-chat-body {
    flex: 1 1 auto;
    overflow-y: auto;
    padding: 18px;
    background:
        radial-gradient(circle at top, rgba(79, 125, 247, 0.08), transparent 35%),
        linear-gradient(180deg, #f8faff 0%, #f4f6fb 100%);
}

.pp-chat-root.pp-chat-create-failed .pp-chat-body,
.pp-chat-root.pp-chat-create-failed .pp-chat-composer {
    opacity: 0.48;
}

.pp-chat-root.pp-chat-create-failed .pp-chat-body {
    pointer-events: none;
}

.pp-chat-empty,
.pp-chat-loader {
    text-align: center;
    color: var(--pp-chat-muted);
    font-size: 14px;
    padding: 24px 12px;
}

.pp-chat-message {
    display: flex;
    margin-bottom: 14px;
}

.pp-chat-history-marker {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin: 0 0 16px;
    color: var(--pp-chat-muted);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.pp-chat-history-marker::before,
.pp-chat-history-marker::after {
    content: "";
    flex: 1 1 auto;
    height: 1px;
    background: rgba(107, 114, 128, 0.25);
}

.pp-chat-history-marker-loading {
    text-transform: none;
    letter-spacing: 0;
}

.pp-chat-spinner {
    width: 14px;
    height: 14px;
    border: 2px solid rgba(31, 79, 214, 0.18);
    border-top-color: var(--pp-chat-primary);
    border-radius: 999px;
    animation: pp-chat-spin 0.75s linear infinite;
}

.pp-chat-message[data-sender="EXTERNAL"] {
    justify-content: flex-end;
}

.pp-chat-message-stack {
    max-width: 84%;
}

.pp-chat-message-bubble {
    border-radius: 18px;
    padding: 12px 14px;
    background: var(--pp-chat-agent);
    border: 1px solid var(--pp-chat-border);
    color: var(--pp-chat-text);
}

.pp-chat-message-author {
    display: block;
    margin: 0 0 6px;
    padding: 0 6px;
    font-size: 12px;
    font-weight: 700;
    color: var(--pp-chat-muted);
    line-height: 1.3;
}

.pp-chat-message[data-sender="EXTERNAL"] .pp-chat-message-bubble {
    background: var(--pp-chat-user);
    color: #fff;
    border-color: transparent;
}

.pp-chat-message[data-sender="SYSTEM"] .pp-chat-message-bubble {
    background: #fff7ed;
}

.pp-chat-message-meta {
    margin-top: 8px;
    font-size: 11px;
    color: inherit;
    opacity: 0.72;
}

.pp-chat-message-retry {
    padding: 0;
    border: 0;
    background: transparent;
    color: inherit;
    font: inherit;
    text-decoration: underline;
    cursor: pointer;
}

.pp-chat-image-link {
    display: block;
    width: 100%;
    padding: 0;
    border: 0;
    background: transparent;
    color: inherit;
    text-decoration: none;
    text-align: left;
    cursor: zoom-in;
}

.pp-chat-image {
    display: block;
    max-width: 100%;
    max-height: 220px;
    border-radius: 12px;
    margin-bottom: 8px;
    object-fit: cover;
}

.pp-chat-composer {
    border-top: 1px solid var(--pp-chat-border);
    background: #fff;
    padding: 14px 16px 16px;
}

.pp-chat-composer-form {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.pp-chat-composer-row {
    display: flex;
    gap: 10px;
    align-items: flex-end;
}

.pp-chat-textarea {
    width: 100%;
    min-height: 84px;
    max-height: 160px;
    resize: vertical;
    border-radius: 16px;
    border: 1px solid var(--pp-chat-border);
    background: #fff;
    padding: 12px 14px;
    color: var(--pp-chat-text);
    font: inherit;
}

.pp-chat-textarea:focus {
    outline: 2px solid rgba(31, 79, 214, 0.18);
    border-color: rgba(31, 79, 214, 0.32);
}

.pp-chat-action {
    width: 44px;
    height: 44px;
    border: 1px solid var(--pp-chat-border);
    border-radius: 14px;
    background: #fff;
    color: var(--pp-chat-text);
    cursor: pointer;
    flex: 0 0 auto;
}

.pp-chat-action-primary {
    background: var(--pp-chat-primary);
    color: #fff;
    border-color: transparent;
}

.pp-chat-action:disabled,
.pp-chat-closed-button:disabled,
.pp-chat-secondary-button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.pp-chat-hint {
    margin: 0;
    font-size: 12px;
    color: var(--pp-chat-muted);
}

.pp-chat-lightbox {
    position: fixed;
    inset: 0;
    z-index: 1200;
}

.pp-chat-lightbox-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.72);
    backdrop-filter: blur(4px);
}

.pp-chat-lightbox-dialog {
    position: absolute;
    inset: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.pp-chat-lightbox-image {
    max-width: min(100%, 1100px);
    max-height: 100%;
    border-radius: 18px;
    box-shadow: 0 24px 64px rgba(15, 23, 42, 0.32);
    background: #fff;
}

.pp-chat-lightbox-close {
    position: absolute;
    top: 0;
    right: 0;
    width: 44px;
    height: 44px;
    border: 0;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.92);
    color: #111827;
    cursor: pointer;
}

@keyframes pp-chat-spin {
    to {
        transform: rotate(360deg);
    }
}

@media (max-width: 767px) {
    .pp-chat-root {
        right: 12px;
        bottom: 12px;
        left: 12px;
    }

    .pp-chat-panel {
        width: 100%;
        height: min(70vh, 620px);
    }

    .pp-chat-root.pp-chat-open .pp-chat-panel {
        width: 100%;
    }

    .pp-chat-root.pp-chat-open .pp-chat-button {
        display: none;
    }

    .pp-chat-lightbox-dialog {
        inset: 12px;
    }
}