/* ─── Chat Widget CSS Variables (light / dark mode) ─── */
#ppz-chat-widget {
    --ppz-chat-brand: var(--ppz-color-brand-primary, #E91E63);
    --ppz-chat-bg: #fff;
    --ppz-chat-text: #1f2937;
    --ppz-chat-text-secondary: #374151;
    --ppz-chat-text-muted: #6b7280;
    --ppz-chat-text-subtle: #9ca3af;
    --ppz-chat-border: #e5e7eb;
    --ppz-chat-border-light: #d1d5db;
    --ppz-chat-surface: #f9fafb;
    --ppz-chat-msg-bg: #f3f4f6;
    --ppz-chat-accent-subtle: #fce4ec;
    --ppz-chat-accent-dark: #c2185b;
    --ppz-chat-tool-bg: #fef3c7;
    --ppz-chat-tool-text: #92400e;
    --ppz-chat-tool-spinner: #fbbf24;
    --ppz-chat-code-bg: #1f2937;
    --ppz-chat-code-text: #e5e7eb;
    --ppz-chat-shadow-md: var(--ppz-shadow-md, 0 8px 24px rgba(15, 23, 42, 0.18));
    --ppz-chat-surface-elevated: var(--ppz-bg-surface, #fff);
    --ppz-chat-surface-subtle: var(--ppz-bg-subtle, #f5f6f7);
    --ppz-chat-border-default: var(--ppz-border-default, #d1d5db);
    --ppz-chat-text-primary: var(--ppz-text-primary, #111827);
    --ppz-chat-text-secondary-strong: var(--ppz-text-secondary, #6b7280);
}
@media (prefers-color-scheme: dark) {
    #ppz-chat-widget {
        --ppz-chat-bg: #1e293b;
        --ppz-chat-text: #f1f5f9;
        --ppz-chat-text-secondary: #cbd5e1;
        --ppz-chat-text-muted: #94a3b8;
        --ppz-chat-text-subtle: #64748b;
        --ppz-chat-border: #334155;
        --ppz-chat-border-light: #475569;
        --ppz-chat-surface: #0f172a;
        --ppz-chat-msg-bg: #334155;
        --ppz-chat-accent-subtle: #3d1129;
        --ppz-chat-accent-dark: #f06292;
        --ppz-chat-tool-bg: #2a1f00;
        --ppz-chat-tool-text: #fbbf24;
        --ppz-chat-tool-spinner: #92400e;
        --ppz-chat-code-bg: #0f172a;
        --ppz-chat-code-text: #e2e8f0;
    }
}

/* ─── Chat Widget Styles ─── */
#ppz-chat-widget {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 9999;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--ppz-chat-text);
}

#ppz-chat-toggle {
    width: 56px; height: 56px; border-radius: 50%; border: none; cursor: pointer;
    background: var(--ppz-chat-brand); color: #fff;
    box-shadow: 0 4px 12px rgba(233,30,99,0.4);
    display: flex; align-items: center; justify-content: center;
    transition: transform 0.2s, box-shadow 0.2s;
    animation: ppz-pulse 2s ease-in-out infinite;
}
#ppz-chat-toggle:hover { transform: scale(1.08); box-shadow: 0 6px 16px rgba(233,30,99,0.5); animation: none; }

@keyframes ppz-pulse {
    0%, 100% { box-shadow: 0 4px 12px rgba(233,30,99,0.4); }
    50% { box-shadow: 0 4px 20px rgba(233,30,99,0.6); }
}

#ppz-chat-panel {
    position: absolute; bottom: 68px; right: 0;
    width: 440px; height: 620px; border-radius: 16px; overflow: hidden;
    background: var(--ppz-chat-bg); box-shadow: 0 8px 32px rgba(0,0,0,0.18);
    display: flex; flex-direction: column;
    transition: opacity 0.25s ease, transform 0.25s ease;
    border: 1px solid rgba(15, 23, 42, 0.06);
}
#ppz-chat-panel.ppz-chat-hidden { display: none; }

#ppz-chat-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 14px 16px; background: var(--ppz-chat-brand); color: #fff;
    flex-shrink: 0;
    min-height: 56px;
}
.ppz-chat-header-left { display: flex; align-items: center; gap: 8px; font-weight: 600; font-size: 15px; }
.ppz-chat-header-actions { display: flex; gap: 4px; }
.ppz-chat-header-actions button {
    background: none; border: none; color: #fff; cursor: pointer; padding: 6px;
    border-radius: 6px; opacity: 0.85;
}
.ppz-chat-header-actions button:hover { opacity: 1; background: rgba(255,255,255,0.15); }

#ppz-chat-messages {
    flex: 1; overflow-y: auto; padding: 16px; min-height: 0;
    display: flex; flex-direction: column; gap: 10px;
    background: var(--ppz-chat-bg);
}

/* Welcome screen */
.ppz-chat-welcome { text-align: center; padding: 20px 8px; }
.ppz-chat-welcome-icon { margin-bottom: 12px; }
.ppz-chat-welcome-title { font-size: 16px; font-weight: 600; color: var(--ppz-chat-text); margin: 0 0 4px; }
.ppz-chat-welcome-sub { font-size: 13px; color: var(--ppz-chat-text-muted); margin: 0 0 20px; }

/* Example question chips */
.ppz-chat-examples { display: flex; flex-direction: column; gap: 8px; margin-top: 8px; }
.ppz-chat-example-btn {
    display: flex; align-items: center; gap: 8px; width: 100%; padding: 10px 14px; border-radius: 10px;
    border: 1px solid var(--ppz-chat-border); background: var(--ppz-chat-surface); cursor: pointer;
    font-size: 13px; color: var(--ppz-chat-text-secondary); text-align: left;
    transition: all 0.15s;
}
.ppz-chat-example-btn svg { flex-shrink: 0; opacity: 0.6; }
.ppz-chat-example-btn:hover svg { opacity: 1; stroke: var(--ppz-chat-brand); }
.ppz-chat-example-btn:hover {
    background: var(--ppz-chat-accent-subtle); border-color: var(--ppz-chat-brand); color: var(--ppz-chat-brand);
}
.ppz-chat-example-btn--write {
    border-color: #f59e0b; color: #92400e;
}
.ppz-chat-example-btn--write:hover {
    background: #fef3c7; border-color: #d97706; color: #78350f;
}
.ppz-chat-example-btn--write:hover svg { opacity: 1; stroke: #d97706; }

/* Messages */
.ppz-chat-msg {
    max-width: 88%; padding: 10px 14px; border-radius: 14px; font-size: 14px; line-height: 1.55;
    word-wrap: break-word;
}
.ppz-chat-msg-user {
    align-self: flex-end; background: var(--ppz-chat-brand); color: #fff;
    border-bottom-right-radius: 4px; white-space: pre-wrap;
}
.ppz-chat-msg-assistant {
    align-self: flex-start; background: var(--ppz-chat-msg-bg); color: var(--ppz-chat-text);
    border-bottom-left-radius: 4px;
}
.ppz-chat-msg-assistant p { margin: 4px 0; }
.ppz-chat-msg-assistant p:first-child { margin-top: 0; }
.ppz-chat-msg-assistant p:last-child { margin-bottom: 0; }
.ppz-chat-msg-assistant ul, .ppz-chat-msg-assistant ol { margin: 4px 0; padding-left: 18px; }
.ppz-chat-msg-assistant li { margin: 2px 0; }
.ppz-chat-msg-assistant h1, .ppz-chat-msg-assistant h2, .ppz-chat-msg-assistant h3 { margin: 8px 0 4px; font-size: 14px; font-weight: 700; }
.ppz-chat-msg-assistant code { background: var(--ppz-chat-border); padding: 1px 4px; border-radius: 3px; font-size: 12px; color: var(--ppz-chat-text); }
.ppz-chat-msg-assistant pre { background: var(--ppz-chat-code-bg); color: var(--ppz-chat-code-text); padding: 8px; border-radius: 6px; overflow-x: auto; margin: 6px 0; }
.ppz-chat-msg-assistant pre code { background: none; color: inherit; }
.ppz-chat-msg-assistant table { border-collapse: collapse; width: 100%; margin: 6px 0; font-size: 13px; }
.ppz-chat-msg-assistant th, .ppz-chat-msg-assistant td { border: 1px solid var(--ppz-chat-border-light); padding: 4px 8px; text-align: left; }
.ppz-chat-msg-assistant th { background: var(--ppz-chat-border); font-weight: 600; color: var(--ppz-chat-text); }
.ppz-chat-msg-assistant tr:nth-child(even) td { background: var(--ppz-chat-surface); }
.ppz-chat-msg-assistant a { color: var(--ppz-chat-brand); text-decoration: underline; }
.ppz-chat-msg-assistant a:hover { color: var(--ppz-chat-accent-dark); }

/* Typing indicator */
#ppz-chat-typing {
    display: flex; align-items: center; gap: 8px; padding: 8px 16px;
    font-size: 12px; color: var(--ppz-chat-text-subtle); flex-shrink: 0;
    background: var(--ppz-chat-bg);
}
#ppz-chat-typing.ppz-chat-hidden { display: none; }
.ppz-chat-typing-dots { display: flex; gap: 4px; }
.ppz-chat-typing-dots span {
    width: 6px; height: 6px; border-radius: 50%; background: var(--ppz-chat-brand);
    animation: ppz-typing-bounce 1.4s infinite ease-in-out both;
}
.ppz-chat-typing-dots span:nth-child(1) { animation-delay: -0.32s; }
.ppz-chat-typing-dots span:nth-child(2) { animation-delay: -0.16s; }
.ppz-chat-typing-dots span:nth-child(3) { animation-delay: 0s; }
@keyframes ppz-typing-bounce {
    0%, 80%, 100% { transform: scale(0.4); opacity: 0.4; }
    40% { transform: scale(1); opacity: 1; }
}
.ppz-chat-typing-text { font-style: italic; }

/* Tool indicator */
#ppz-chat-tool-indicator {
    display: flex; align-items: center; gap: 8px; padding: 8px 16px;
    font-size: 12px; color: var(--ppz-chat-tool-text); background: var(--ppz-chat-tool-bg); flex-shrink: 0;
}
#ppz-chat-tool-indicator.ppz-chat-hidden { display: none; }
.ppz-chat-tool-spinner {
    width: 14px; height: 14px; border: 2px solid var(--ppz-chat-tool-spinner); border-top-color: var(--ppz-chat-brand);
    border-radius: 50%; animation: ppz-spin 0.8s linear infinite;
}
@keyframes ppz-spin { to { transform: rotate(360deg); } }
#ppz-chat-tool-indicator.ppz-chat-tool-write {
    --ppz-chat-tool-bg: #fff7ed; --ppz-chat-tool-text: #9a3412;
}
#ppz-chat-tool-indicator.ppz-chat-tool-write .ppz-chat-tool-spinner {
    border-color: #fed7aa; border-top-color: #ea580c;
}

/* Input area */
#ppz-chat-input-area {
    position: relative;
    display: flex; align-items: flex-end; gap: 8px; padding: 12px 14px;
    border-top: 1px solid var(--ppz-chat-border); flex-shrink: 0;
    background: var(--ppz-chat-bg);
}
#ppz-chat-input {
    flex: 1; border: 1px solid var(--ppz-chat-border-light); border-radius: 10px; padding: 10px 14px;
    font-size: 14px; resize: none; max-height: 80px; outline: none;
    font-family: inherit; line-height: 1.4;
    background: var(--ppz-chat-bg); color: var(--ppz-chat-text);
    min-height: 44px;
}
#ppz-chat-input:focus { border-color: var(--ppz-chat-brand); box-shadow: 0 0 0 2px rgba(233,30,99,0.1); }
#ppz-chat-send {
    width: 38px; height: 38px; border-radius: 10px; border: none; cursor: pointer;
    background: var(--ppz-chat-brand); color: #fff;
    display: flex; align-items: center; justify-content: center;
    transition: opacity 0.15s;
}
#ppz-chat-send:disabled { opacity: 0.4; cursor: not-allowed; }

#ppz-chat-mentions {
    position: absolute;
    left: 14px;
    right: 60px;
    bottom: calc(100% + 8px);
    max-height: 220px;
    overflow-y: auto;
    border: 1px solid var(--ppz-chat-border-default);
    border-radius: 12px;
    background: var(--ppz-chat-surface-elevated);
    box-shadow: var(--ppz-chat-shadow-md);
    padding: 6px;
    z-index: 3;
}
#ppz-chat-mentions.ppz-chat-hidden { display: none; }
.ppz-chat-mention-item {
    width: 100%;
    display: flex;
    align-items: flex-start;
    gap: var(--ppz-space-2);
    border: 0;
    background: transparent;
    border-radius: 10px;
    padding: 10px;
    cursor: pointer;
    text-align: left;
}
.ppz-chat-mention-item:hover,
.ppz-chat-mention-item.is-active {
    background: var(--ppz-chat-surface-subtle);
}
.ppz-chat-mention-item__icon {
    width: 28px;
    height: 28px;
    flex: 0 0 28px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    background: var(--ppz-chat-surface-subtle);
    color: var(--ppz-chat-brand);
}
.ppz-chat-mention-item__body {
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.ppz-chat-mention-item__label {
    color: var(--ppz-chat-text-primary);
    font-size: 13px;
    font-weight: 600;
    line-height: 1.35;
}
.ppz-chat-mention-item__meta {
    color: var(--ppz-chat-text-secondary-strong);
    font-size: 12px;
    line-height: 1.35;
}
.ppz-chat-mention-empty {
    padding: 10px;
    color: var(--ppz-chat-text-secondary-strong);
    font-size: 12px;
}

/* Conversations panel */
#ppz-chat-conversations { position: absolute; top: 50px; left: 0; right: 0; bottom: 0; background: var(--ppz-chat-bg); z-index: 1; overflow-y: auto; }
#ppz-chat-conversations.ppz-chat-hidden { display: none; }
.ppz-chat-conv-header { display: flex; justify-content: space-between; align-items: center; padding: 12px 16px; border-bottom: 1px solid var(--ppz-chat-border); font-size: 14px; font-weight: 600; color: var(--ppz-chat-text); }
.ppz-chat-conv-header button { background: none; border: none; cursor: pointer; color: var(--ppz-chat-text-muted); padding: 4px; }
#ppz-chat-conv-list { padding: 8px; }
.ppz-chat-conv-item {
    padding: 12px 14px; border-radius: 10px; cursor: pointer; font-size: 13px;
    margin-bottom: 4px; transition: background 0.15s;
}
.ppz-chat-conv-item:hover { background: var(--ppz-chat-msg-bg); }
.ppz-chat-conv-item-title { font-weight: 500; color: var(--ppz-chat-text); }
.ppz-chat-conv-item-date { font-size: 11px; color: var(--ppz-chat-text-subtle); margin-top: 2px; }

/* Responsive */
@media (max-width: 520px) {
    #ppz-chat-panel { width: calc(100vw - 24px); right: -8px; bottom: 64px; height: 75vh; }
}
/* ─── Demo mode: full-screen modal overlay (www landing page) ─── */
#ppz-chat-widget[data-demo="1"] {
    position: fixed !important; inset: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,.6); display: flex; align-items: center;
    justify-content: center; padding: 1rem; bottom: auto; right: auto; z-index: 10000;
}
#ppz-chat-widget[data-demo="1"] #ppz-chat-toggle { display: none !important; }
#ppz-chat-widget[data-demo="1"] #ppz-chat-panel {
    position: relative !important; bottom: auto !important; right: auto !important;
    width: 100% !important; max-width: 520px !important;
    height: 85vh !important; max-height: 680px !important;
}