/* ================================================
   Hub AI Assistant — Frontend
   Designed for SureDash embedding
   Aesthetic: Clean, warm, premium SaaS
   ================================================ */

:root {
    --wnsai-bg: #fafafa;
    --wnsai-surface: #ffffff;
    --wnsai-surface-2: #f3f4f6;
    --wnsai-surface-3: #e5e7eb;
    --wnsai-border: #e5e7eb;
    --wnsai-border-focus: #a78bfa;
    --wnsai-text: #1f2937;
    --wnsai-text-secondary: #6b7280;
    --wnsai-text-dim: #9ca3af;
    --wnsai-primary: #7c3aed;
    --wnsai-primary-hover: #6d28d9;
    --wnsai-primary-light: #ede9fe;
    --wnsai-primary-glow: rgba(124, 58, 237, 0.15);
    --wnsai-accent: #f59e0b;
    --wnsai-success: #059669;
    --wnsai-danger: #dc2626;
    --wnsai-sidebar-bg: #1e1b4b;
    --wnsai-sidebar-text: #e0e7ff;
    --wnsai-sidebar-muted: #a5b4fc;
    --wnsai-sidebar-active: rgba(255,255,255,0.12);
    --wnsai-radius: 14px;
    --wnsai-radius-sm: 10px;
    --wnsai-font: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --wnsai-transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---- App Shell ---- */
.wnsai-app {
    display: grid;
    grid-template-columns: 280px 1fr;
    height: 85vh;
    min-height: 550px;
    max-height: 900px;
    border-radius: var(--wnsai-radius);
    overflow: hidden;
    border: 1px solid var(--wnsai-border);
    font-family: var(--wnsai-font);
    color: var(--wnsai-text);
    background: var(--wnsai-surface);
    box-shadow: 0 4px 24px rgba(0,0,0,0.06), 0 1px 3px rgba(0,0,0,0.04);
    -webkit-font-smoothing: antialiased;
}

.wnsai-app * {
    box-sizing: border-box;
}

/* ---- Sidebar ---- */
.wnsai-sidebar {
    background: var(--wnsai-sidebar-bg);
    color: var(--wnsai-sidebar-text);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.wnsai-sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 18px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.wnsai-brand {
    display: flex;
    align-items: center;
    gap: 10px;
}

.wnsai-brand-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, #7c3aed, #a78bfa);
    border-radius: 10px;
    color: #fff;
}

.wnsai-brand-text {
    font-weight: 700;
    font-size: 16px;
    letter-spacing: -0.02em;
}

.wnsai-icon-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 8px;
    background: transparent;
    color: var(--wnsai-sidebar-muted);
    cursor: pointer;
    transition: all var(--wnsai-transition);
}

.wnsai-icon-btn:hover {
    background: var(--wnsai-sidebar-active);
    color: #fff;
}

/* Mode tabs */
.wnsai-modes {
    display: flex;
    gap: 4px;
    padding: 14px 14px 10px;
    flex-wrap: wrap;
}

.wnsai-mode-btn {
    padding: 7px 14px;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 20px;
    background: transparent;
    color: var(--wnsai-sidebar-muted);
    font-size: 13px;
    font-weight: 500;
    font-family: var(--wnsai-font);
    cursor: pointer;
    transition: all var(--wnsai-transition);
    white-space: nowrap;
}

.wnsai-mode-btn:hover {
    background: rgba(255,255,255,0.08);
    color: #fff;
}

.wnsai-mode-btn.active {
    background: rgba(124, 58, 237, 0.35);
    border-color: rgba(124, 58, 237, 0.6);
    color: #fff;
}

/* Sessions */
.wnsai-sessions {
    flex: 1;
    overflow-y: auto;
    padding: 8px 12px;
}

.wnsai-sessions::-webkit-scrollbar {
    width: 4px;
}

.wnsai-sessions::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.15);
    border-radius: 2px;
}

.wnsai-sessions-label {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--wnsai-sidebar-muted);
    padding: 8px 8px 6px;
    opacity: 0.7;
}

.wnsai-session-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    border-radius: 8px;
    cursor: pointer;
    transition: background var(--wnsai-transition);
    font-size: 13px;
    color: var(--wnsai-sidebar-text);
    margin-bottom: 2px;
}

.wnsai-session-item:hover {
    background: var(--wnsai-sidebar-active);
}

.wnsai-session-item.active {
    background: rgba(124, 58, 237, 0.2);
}

.wnsai-session-title {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.wnsai-session-delete {
    opacity: 0;
    background: none;
    border: none;
    color: var(--wnsai-sidebar-muted);
    cursor: pointer;
    padding: 2px;
    transition: opacity var(--wnsai-transition);
}

.wnsai-session-item:hover .wnsai-session-delete {
    opacity: 1;
}

/* Usage panel */
.wnsai-usage-panel {
    padding: 16px 18px;
    border-top: 1px solid rgba(255,255,255,0.08);
}

.wnsai-tier-badge {
    display: inline-block;
    padding: 3px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
    background: var(--tier-color, #6366f1);
    color: #fff;
    margin-bottom: 10px;
}

.wnsai-usage-meter {
    height: 6px;
    background: rgba(255,255,255,0.1);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 6px;
}

.wnsai-usage-bar {
    height: 100%;
    background: linear-gradient(90deg, #a78bfa, #7c3aed);
    border-radius: 3px;
    transition: width 0.5s ease;
    width: 0%;
}

.wnsai-usage-text {
    font-size: 12px;
    color: var(--wnsai-sidebar-muted);
}

/* ---- Main Area ---- */
.wnsai-main {
    display: flex;
    flex-direction: column;
    background: var(--wnsai-bg);
    overflow: hidden;
}

.wnsai-mobile-header {
    display: none;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    border-bottom: 1px solid var(--wnsai-border);
    background: var(--wnsai-surface);
}

.wnsai-mobile-header .wnsai-icon-btn {
    color: var(--wnsai-text-secondary);
    border-color: var(--wnsai-border);
}

.wnsai-mobile-title {
    font-weight: 600;
    font-size: 15px;
}

/* Messages area */
.wnsai-messages {
    flex: 1;
    overflow-y: auto;
    padding: 32px 24px;
    scroll-behavior: smooth;
}

.wnsai-messages::-webkit-scrollbar {
    width: 6px;
}

.wnsai-messages::-webkit-scrollbar-thumb {
    background: var(--wnsai-surface-3);
    border-radius: 3px;
}

/* Welcome */
.wnsai-welcome {
    max-width: 640px;
    margin: 40px auto 0;
    animation: wnsai-fade-in 0.5s ease;
}

.wnsai-welcome-hello {
    font-size: 15px;
    color: var(--wnsai-text-secondary);
    margin-bottom: 4px;
}

.wnsai-name {
    color: var(--wnsai-primary);
    font-weight: 600;
}

.wnsai-welcome h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--wnsai-text);
    margin: 0 0 8px;
    letter-spacing: -0.03em;
    line-height: 1.2;
}

.wnsai-welcome-sub {
    color: var(--wnsai-text-secondary);
    font-size: 15px;
    margin: 0 0 28px;
    line-height: 1.5;
}

/* Templates */
.wnsai-templates {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 10px;
}

.wnsai-template {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 16px;
    background: var(--wnsai-surface);
    border: 1px solid var(--wnsai-border);
    border-radius: var(--wnsai-radius-sm);
    font-size: 13px;
    font-weight: 500;
    color: var(--wnsai-text);
    cursor: pointer;
    transition: all var(--wnsai-transition);
    text-align: left;
    font-family: var(--wnsai-font);
    line-height: 1.4;
}

.wnsai-template:hover {
    border-color: var(--wnsai-primary);
    background: var(--wnsai-primary-light);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px var(--wnsai-primary-glow);
}

.wnsai-template-icon {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    background: var(--wnsai-primary-light);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--wnsai-primary);
}

/* Messages */
.wnsai-msg {
    max-width: 780px;
    margin: 0 auto 28px;
    display: flex;
    gap: 14px;
    animation: wnsai-slide-up 0.3s ease;
}

.wnsai-msg-avatar {
    flex-shrink: 0;
    width: 34px;
    height: 34px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 700;
    color: #fff;
}

.wnsai-msg-user .wnsai-msg-avatar {
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
}

.wnsai-msg-assistant .wnsai-msg-avatar {
    background: linear-gradient(135deg, #7c3aed, #a855f6);
}

.wnsai-msg-body {
    flex: 1;
    min-width: 0;
}

.wnsai-msg-label {
    font-size: 12px;
    font-weight: 600;
    color: var(--wnsai-text-dim);
    margin-bottom: 5px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.wnsai-msg-content {
    font-size: 15px;
    line-height: 1.75;
    color: var(--wnsai-text);
    word-wrap: break-word;
}

.wnsai-msg-content p { margin: 0 0 12px; }
.wnsai-msg-content p:last-child { margin-bottom: 0; }
.wnsai-msg-content h2 { font-size: 19px; font-weight: 600; margin: 22px 0 10px; }
.wnsai-msg-content h3 { font-size: 16px; font-weight: 600; margin: 18px 0 8px; }
.wnsai-msg-content ul, .wnsai-msg-content ol { padding-left: 22px; margin: 10px 0; }
.wnsai-msg-content li { margin-bottom: 6px; }
.wnsai-msg-content a { color: var(--wnsai-primary); text-decoration: none; }
.wnsai-msg-content a:hover { text-decoration: underline; }

.wnsai-msg-content code {
    background: var(--wnsai-surface-2);
    padding: 2px 7px;
    border-radius: 5px;
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 13px;
    color: #c026d3;
}

.wnsai-msg-content pre {
    background: #1e1b4b;
    color: #e0e7ff;
    border-radius: var(--wnsai-radius-sm);
    padding: 18px;
    overflow-x: auto;
    margin: 14px 0;
}

.wnsai-msg-content pre code {
    background: none;
    padding: 0;
    color: inherit;
    font-size: 13px;
    line-height: 1.6;
}

.wnsai-msg-content blockquote {
    border-left: 3px solid var(--wnsai-primary);
    margin: 14px 0;
    padding: 8px 16px;
    color: var(--wnsai-text-secondary);
    background: var(--wnsai-primary-light);
    border-radius: 0 var(--wnsai-radius-sm) var(--wnsai-radius-sm) 0;
}

.wnsai-msg-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 14px 0;
    font-size: 14px;
}

.wnsai-msg-content th, .wnsai-msg-content td {
    padding: 10px 14px;
    text-align: left;
    border-bottom: 1px solid var(--wnsai-border);
}

.wnsai-msg-content th {
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--wnsai-text-secondary);
}

/* Copy button on assistant messages */
.wnsai-msg-actions {
    display: flex;
    gap: 6px;
    margin-top: 8px;
    opacity: 0;
    transition: opacity var(--wnsai-transition);
}

.wnsai-msg:hover .wnsai-msg-actions {
    opacity: 1;
}

.wnsai-copy-btn {
    padding: 4px 10px;
    font-size: 12px;
    border: 1px solid var(--wnsai-border);
    border-radius: 6px;
    background: var(--wnsai-surface);
    color: var(--wnsai-text-secondary);
    cursor: pointer;
    font-family: var(--wnsai-font);
    transition: all var(--wnsai-transition);
}

.wnsai-copy-btn:hover {
    border-color: var(--wnsai-primary);
    color: var(--wnsai-primary);
}

/* Typing */
.wnsai-typing {
    display: flex;
    gap: 5px;
    padding: 4px 0;
}

.wnsai-typing span {
    width: 8px;
    height: 8px;
    background: var(--wnsai-text-dim);
    border-radius: 50%;
    animation: wnsai-bounce 1.2s ease-in-out infinite;
}

.wnsai-typing span:nth-child(2) { animation-delay: 0.15s; }
.wnsai-typing span:nth-child(3) { animation-delay: 0.3s; }

/* ---- Input Area ---- */
.wnsai-input-area {
    padding: 12px 24px 20px;
    max-width: 828px;
    margin: 0 auto;
    width: 100%;
}

.wnsai-input-box {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    background: var(--wnsai-surface);
    border: 2px solid var(--wnsai-border);
    border-radius: var(--wnsai-radius);
    padding: 6px 6px 6px 18px;
    transition: all var(--wnsai-transition);
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}

.wnsai-input-box:focus-within {
    border-color: var(--wnsai-primary);
    box-shadow: 0 0 0 4px var(--wnsai-primary-glow), 0 2px 8px rgba(0,0,0,0.04);
}

#wnsai-input {
    flex: 1;
    border: none;
    background: transparent;
    color: var(--wnsai-text);
    font-size: 15px;
    font-family: var(--wnsai-font);
    resize: none;
    max-height: 140px;
    padding: 10px 0;
    line-height: 1.5;
    outline: none;
}

#wnsai-input::placeholder {
    color: var(--wnsai-text-dim);
}

.wnsai-send-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: none;
    background: var(--wnsai-primary);
    color: #fff;
    border-radius: 10px;
    cursor: pointer;
    transition: all var(--wnsai-transition);
    flex-shrink: 0;
}

.wnsai-send-btn:hover:not(:disabled) {
    background: var(--wnsai-primary-hover);
    transform: scale(1.05);
}

.wnsai-send-btn:disabled {
    opacity: 0.25;
    cursor: default;
}

.wnsai-input-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 8px;
    padding: 0 4px;
    font-size: 12px;
    color: var(--wnsai-text-dim);
}

.wnsai-powered {
    opacity: 0.6;
}

.wnsai-remaining {
    font-weight: 500;
}

/* No access / login states */
.wnsai-no-access,
.wnsai-login-required {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    text-align: center;
    padding: 40px;
    font-family: var(--wnsai-font);
}

.wnsai-no-access-inner h3 {
    font-size: 20px;
    margin-bottom: 8px;
}

.wnsai-no-access-inner p {
    color: #6b7280;
    max-width: 400px;
}

/* ---- Animations ---- */
@keyframes wnsai-fade-in {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes wnsai-slide-up {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes wnsai-bounce {
    0%, 80%, 100% { transform: scale(0.6); opacity: 0.4; }
    40% { transform: scale(1); opacity: 1; }
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
    .wnsai-app {
        grid-template-columns: 1fr;
        height: 90vh;
    }

    .wnsai-sidebar {
        position: fixed;
        top: 0;
        left: -300px;
        width: 280px;
        height: 100%;
        z-index: 9999;
        transition: left 0.3s ease;
    }

    .wnsai-sidebar.open {
        left: 0;
        box-shadow: 4px 0 24px rgba(0,0,0,0.3);
    }

    .wnsai-mobile-header {
        display: flex;
    }

    .wnsai-messages {
        padding: 20px 16px;
    }

    .wnsai-input-area {
        padding: 10px 16px 16px;
    }

    .wnsai-welcome h2 {
        font-size: 22px;
    }

    .wnsai-templates {
        grid-template-columns: 1fr;
    }
}

/* ── SSE streaming additions ─────────────────────────────────────── */
.wnsai-cursor {
    display: inline-block;
    width: 2px;
    background: currentColor;
    margin-left: 1px;
    vertical-align: middle;
    animation: wnsai-blink 0.8s step-end infinite;
}

@keyframes wnsai-blink {
    0%, 100% { opacity: 1; }
    50%       { opacity: 0; }
}

.wnsai-stop-btn {
    background: #ef4444 !important;
    color: #fff !important;
}

.wnsai-stop-btn:hover {
    background: #dc2626 !important;
}

/* ── Feedback thumbs ─────────────────────────────────────────── */
.wnsai-feedback {
    display: flex;
    gap: 8px;
    margin-top: 8px;
    opacity: 0.6;
    transition: opacity 0.2s;
}

.wnsai-feedback:hover { opacity: 1; }

.wnsai-thumb {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 16px;
    padding: 2px 6px;
    border-radius: 4px;
    transition: background 0.15s;
    font-family: inherit;
    line-height: 1;
}

.wnsai-thumb:hover { background: rgba(0,0,0,0.08); }

.wnsai-thumb-active {
    background: rgba(0,0,0,0.12);
    opacity: 1;
}

.wnsai-thumb:disabled {
    cursor: default;
    pointer-events: none;
}

/* ── Sales deployment ─────────────────────────────────────────── */
.wnsai-app--sales .wnsai-sidebar { display: none; }
.wnsai-app--sales .wnsai-main { border-radius: 8px; }
.wnsai-app--sales .wnsai-powered {
    text-align: center;
    font-size: 11px;
    opacity: 0.5;
    padding: 4px 0;
    display: block;
}
.wnsai-app--sales {
    grid-template-columns: 1fr;
}