/* ============================================
   UniCreation AI Chatbot v1.3 — Frontend CSS
   With: Lead form, Template cards, Zalo button, Streaming
   ============================================ */

:root {
    --ucai-pri: #6C63FF;
    --ucai-sec: #3F51B5;
    --ucai-zalo: #0068FF;
    --ucai-r: 16px;
    --ucai-t: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.ucai-widget, .ucai-widget * {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Noto Sans', sans-serif;
    -webkit-font-smoothing: antialiased;
}

/* ---- Float wrapper ---- */
.ucai-float-mode { position: fixed; z-index: 999999; }
.ucai-pos-right { right: 20px; }
.ucai-pos-left { left: 20px; }

/* ---- FAB ---- */
.ucai-fab {
    width: 60px; height: 60px;
    border-radius: 50%;
    border: none;
    background: linear-gradient(135deg, var(--ucai-pri), var(--ucai-sec));
    color: white;
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    box-shadow: 0 4px 20px rgba(108,99,255,0.4);
    transition: var(--ucai-t);
    position: relative;
    outline: none;
}
.ucai-fab:hover { transform: scale(1.08); box-shadow: 0 6px 30px rgba(108,99,255,0.5); }
.ucai-fab:active { transform: scale(0.95); }
.ucai-fab .ucai-dot { fill: var(--ucai-pri); }

.ucai-notif {
    position: absolute; top: -4px; right: -4px;
    width: 22px; height: 22px;
    background: #FF4757; color: #fff;
    border-radius: 50%;
    font-size: 11px; font-weight: 700;
    display: flex; align-items: center; justify-content: center;
    border: 2px solid #fff;
    animation: ucai-pulse 2s infinite;
}
@keyframes ucai-pulse { 0%,100%{transform:scale(1)} 50%{transform:scale(1.15)} }

/* ---- Window ---- */
.ucai-window {
    background: #fff;
    border-radius: var(--ucai-r);
    box-shadow: 0 8px 40px rgba(0,0,0,0.15);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border: 1px solid rgba(0,0,0,0.06);
}

.ucai-window-float {
    position: absolute;
    bottom: 75px;
    width: 400px;
    height: 600px;
    max-height: 85vh;
    animation: ucai-up 0.35s cubic-bezier(0.4,0,0.2,1);
}
.ucai-pos-right .ucai-window-float { right: 0; }
.ucai-pos-left .ucai-window-float { left: 0; }

.ucai-window-inline { border-radius: 12px; }

@keyframes ucai-up {
    from { opacity:0; transform:translateY(20px) scale(0.95); }
    to { opacity:1; transform:translateY(0) scale(1); }
}

/* ---- Header ---- */
.ucai-hdr {
    background: linear-gradient(135deg, var(--ucai-pri), var(--ucai-sec));
    padding: 14px 16px;
    display: flex; align-items: center; justify-content: space-between;
    flex-shrink: 0;
    min-height: 60px;
}

.ucai-hdr-left { display: flex; align-items: center; gap: 10px; min-width: 0; }

.ucai-hdr-avatar {
    width: 36px; height: 36px;
    border-radius: 50%;
    background: rgba(255,255,255,0.2);
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
}

.ucai-hdr-name {
    color: #fff; font-weight: 700; font-size: 14px; line-height: 1.3;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

.ucai-hdr-status {
    display: flex; align-items: center; gap: 5px;
    color: rgba(255,255,255,0.85); font-size: 11px; line-height: 1.3;
}

.ucai-online-dot {
    width: 7px; height: 7px; border-radius: 50%;
    background: #00E676;
    animation: ucai-blink 2s infinite;
}
@keyframes ucai-blink { 0%,100%{opacity:1} 50%{opacity:0.4} }

.ucai-hdr-right { display: flex; gap: 4px; flex-shrink: 0; }

.ucai-hdr-btn, a.ucai-hdr-btn {
    background: rgba(255,255,255,0.15);
    border: none;
    border-radius: 8px;
    width: 32px; height: 32px;
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: var(--ucai-t);
    outline: none;
    text-decoration: none;
}
.ucai-hdr-btn:hover, a.ucai-hdr-btn:hover { background: rgba(255,255,255,0.3); }

.ucai-zalo-btn {
    background: rgba(255,255,255,0.25) !important;
    position: relative;
}
.ucai-zalo-btn::after {
    content: '';
    position: absolute;
    top: -2px; right: -2px;
    width: 8px; height: 8px;
    background: #00E676;
    border-radius: 50%;
    border: 1.5px solid var(--ucai-pri);
}

/* ---- Body Messages ---- */
.ucai-body {
    flex: 1;
    overflow-y: auto;
    padding: 16px 14px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    scroll-behavior: smooth;
    background: #F8F9FC;
    min-height: 0;
}

.ucai-body::-webkit-scrollbar { width: 5px; }
.ucai-body::-webkit-scrollbar-track { background: transparent; }
.ucai-body::-webkit-scrollbar-thumb { background: #d1d5db; border-radius: 10px; }

.ucai-msg {
    display: flex;
    gap: 8px;
    max-width: 88%;
    animation: ucai-in 0.3s ease;
}
@keyframes ucai-in { from{opacity:0;transform:translateY(8px)} to{opacity:1;transform:translateY(0)} }

.ucai-msg-bot { align-self: flex-start; }
.ucai-msg-user { align-self: flex-end; flex-direction: row-reverse; }

.ucai-msg-ava {
    width: 28px; height: 28px;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
    font-size: 13px;
}
.ucai-msg-bot .ucai-msg-ava { background: linear-gradient(135deg, var(--ucai-pri), var(--ucai-sec)); }
.ucai-msg-user .ucai-msg-ava { background: #E8EAED; }

.ucai-bbl {
    padding: 10px 14px;
    border-radius: 14px;
    font-size: 13.5px;
    line-height: 1.6;
    word-wrap: break-word;
    white-space: pre-wrap;
}

.ucai-msg-bot .ucai-bbl {
    background: #fff;
    color: #1a1a2e;
    border: 1px solid #e8eaed;
    border-top-left-radius: 4px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}
.ucai-msg-user .ucai-bbl {
    background: linear-gradient(135deg, var(--ucai-pri), var(--ucai-sec));
    color: #fff;
    border-top-right-radius: 4px;
}
.ucai-bbl a { color: var(--ucai-pri); text-decoration: underline; }
.ucai-msg-user .ucai-bbl a { color: #fff; }
.ucai-bbl strong { font-weight: 700; }

/* Streaming cursor */
.ucai-bbl.streaming::after {
    content: '▊';
    display: inline-block;
    color: var(--ucai-pri);
    animation: ucai-cursor 1s infinite;
    margin-left: 2px;
}
@keyframes ucai-cursor { 0%,50%{opacity:1} 51%,100%{opacity:0} }

.ucai-msg-time {
    font-size: 10px;
    color: #9ca3af;
    margin-top: 3px;
    padding: 0 4px;
}
.ucai-msg-user .ucai-msg-time { text-align: right; }

/* Typing */
.ucai-typing-wrap { display: flex; gap: 4px; padding: 8px 14px; align-items: center; }
.ucai-tdot {
    width: 7px; height: 7px;
    border-radius: 50%;
    background: #b0b3b8;
    animation: ucai-bounce 1.4s infinite;
}
.ucai-tdot:nth-child(2) { animation-delay: 0.2s; }
.ucai-tdot:nth-child(3) { animation-delay: 0.4s; }
@keyframes ucai-bounce { 0%,60%,100%{transform:translateY(0)} 30%{transform:translateY(-5px)} }

/* ==================== TEMPLATE CARDS ==================== */
.ucai-templates {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 6px;
    width: 100%;
}

.ucai-templates-header {
    font-size: 12px;
    color: #6b7280;
    font-weight: 600;
    padding: 0 2px;
}

.ucai-tpl-card {
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    overflow: hidden;
    text-decoration: none;
    transition: var(--ucai-t);
    display: flex;
    flex-direction: column;
}
.ucai-tpl-card:hover {
    border-color: var(--ucai-pri);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(108,99,255,0.15);
}

.ucai-tpl-img {
    width: 100%;
    height: 120px;
    background: #f3f4f6 center/cover no-repeat;
    position: relative;
}

.ucai-tpl-label {
    position: absolute;
    top: 8px; left: 8px;
    background: #FF4757;
    color: #fff;
    padding: 3px 8px;
    border-radius: 12px;
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
}

.ucai-tpl-info { padding: 10px 12px; }

.ucai-tpl-title {
    font-size: 13px;
    font-weight: 700;
    color: #1a1a2e;
    margin-bottom: 4px;
    line-height: 1.3;
}

.ucai-tpl-cats {
    font-size: 11px;
    color: #6b7280;
    margin-bottom: 8px;
}

.ucai-tpl-actions {
    display: flex;
    gap: 6px;
}

.ucai-tpl-btn {
    flex: 1;
    padding: 6px 10px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: var(--ucai-t);
}

.ucai-tpl-btn-demo {
    background: linear-gradient(135deg, var(--ucai-pri), var(--ucai-sec));
    color: #fff;
}
.ucai-tpl-btn-demo:hover { opacity: 0.9; color: #fff; }

.ucai-tpl-btn-detail {
    background: #f3f4f6;
    color: #374151;
}
.ucai-tpl-btn-detail:hover { background: #e5e7eb; color: #374151; }

/* ==================== LEAD FORM ==================== */
.ucai-lead-form {
    background: #fff;
    border: 2px solid var(--ucai-pri);
    border-radius: 14px;
    padding: 16px;
    margin-top: 6px;
    width: 100%;
    box-shadow: 0 4px 20px rgba(108,99,255,0.12);
}

.ucai-lead-title {
    font-size: 14px;
    font-weight: 700;
    color: #1a1a2e;
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.ucai-lead-subtitle {
    font-size: 12px;
    color: #6b7280;
    margin-bottom: 12px;
}

.ucai-lead-form input,
.ucai-lead-form textarea {
    width: 100%;
    padding: 9px 12px;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    font-size: 13px;
    margin-bottom: 8px;
    outline: none;
    transition: border-color 0.2s;
    font-family: inherit;
    background: #fff;
    color: #1a1a2e;
}
.ucai-lead-form input:focus,
.ucai-lead-form textarea:focus {
    border-color: var(--ucai-pri);
    box-shadow: 0 0 0 3px rgba(108,99,255,0.1);
}

.ucai-lead-form textarea { resize: vertical; min-height: 60px; }

.ucai-lead-buttons {
    display: flex;
    gap: 8px;
    margin-top: 6px;
}

.ucai-lead-submit {
    flex: 1;
    background: linear-gradient(135deg, var(--ucai-pri), var(--ucai-sec));
    color: #fff;
    border: none;
    padding: 10px;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--ucai-t);
}
.ucai-lead-submit:hover:not(:disabled) { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(108,99,255,0.3); }
.ucai-lead-submit:disabled { opacity: 0.5; cursor: not-allowed; }

.ucai-lead-cancel {
    background: #f3f4f6;
    color: #6b7280;
    border: none;
    padding: 10px 16px;
    border-radius: 8px;
    font-size: 13px;
    cursor: pointer;
    transition: var(--ucai-t);
}
.ucai-lead-cancel:hover { background: #e5e7eb; }

.ucai-lead-success {
    background: linear-gradient(135deg, #10B981, #059669);
    color: #fff;
    padding: 16px;
    border-radius: 14px;
    margin-top: 6px;
    text-align: center;
    font-size: 13px;
    font-weight: 600;
    animation: ucai-in 0.4s ease;
}

.ucai-lead-success-icon {
    font-size: 32px;
    margin-bottom: 6px;
    display: block;
}

/* ==================== QUICK ACTIONS ==================== */
.ucai-quick {
    padding: 8px 14px;
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    background: #F8F9FC;
    border-top: 1px solid #f0f0f0;
    flex-shrink: 0;
}
.ucai-quick:empty { display: none; }

.ucai-qbtn {
    background: #fff;
    border: 1px solid #e2e4e9;
    border-radius: 20px;
    padding: 5px 12px;
    font-size: 12px;
    color: #4a4a5a;
    cursor: pointer;
    transition: var(--ucai-t);
    white-space: nowrap;
    outline: none;
    line-height: 1.4;
}
.ucai-qbtn:hover {
    background: var(--ucai-pri);
    color: #fff;
    border-color: var(--ucai-pri);
    transform: translateY(-1px);
}

/* ==================== INPUT FOOTER ==================== */
.ucai-foot {
    padding: 10px 14px 8px;
    background: #fff;
    border-top: 1px solid #eee;
    flex-shrink: 0;
}

.ucai-input-row {
    display: flex;
    align-items: center;
    gap: 8px;
    background: #F3F4F6;
    border-radius: 24px;
    padding: 5px 6px 5px 14px;
    border: 2px solid transparent;
    transition: var(--ucai-t);
}
.ucai-input-row:focus-within {
    border-color: var(--ucai-pri);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(108,99,255,0.1);
}

.ucai-inp {
    flex: 1;
    border: none;
    background: none;
    font-size: 14px;
    line-height: 1.4;
    resize: none;
    outline: none;
    max-height: 80px;
    min-height: 20px;
    color: #1a1a2e;
    font-family: inherit;
    padding: 4px 0;
}
.ucai-inp::placeholder { color: #9ca3af; }

.ucai-send {
    width: 34px; height: 34px;
    border-radius: 50%;
    border: none;
    background: linear-gradient(135deg, var(--ucai-pri), var(--ucai-sec));
    color: #fff;
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
    transition: var(--ucai-t);
    outline: none;
    opacity: 0.4;
}
.ucai-send:not(:disabled) { opacity: 1; }
.ucai-send:not(:disabled):hover { transform: scale(1.08); box-shadow: 0 2px 12px rgba(108,99,255,0.4); }

.ucai-branding {
    text-align: center;
    font-size: 10px;
    color: #b0b3b8;
    margin-top: 5px;
}
.ucai-branding strong { color: #9ca3af; }

/* Error */
.ucai-err {
    background: #FFF5F5;
    border: 1px solid #FED7D7;
    color: #C53030;
    padding: 8px 12px;
    border-radius: 10px;
    font-size: 12px;
    text-align: center;
}

/* Inline mode */
.ucai-inline-mode .ucai-window-inline {
    position: relative;
    box-shadow: 0 2px 16px rgba(0,0,0,0.1);
}

/* ---- Responsive ---- */
@media (max-width: 480px) {
    .ucai-pos-right { right: 10px; }
    .ucai-pos-left { left: 10px; }

    .ucai-window-float {
        width: calc(100vw - 24px);
        height: calc(100vh - 100px);
        max-height: calc(100vh - 100px);
    }
    .ucai-pos-right .ucai-window-float { right: -10px; }
    .ucai-pos-left .ucai-window-float { left: -10px; }

    .ucai-fab { width: 54px; height: 54px; }
}