/* =========================
   VARIABLES
========================= */

:root {
    --primary: #2563eb;
    --primary-light: #eff6ff;
    --bg-main: #f1f5f9;
    --bg-panel: #ffffff;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --danger: #ef4444;
    --chat-width: 380px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Inter',system-ui,-apple-system,sans-serif;
    background: var(--bg-main);
    color: var(--text-main);
    height: 100%;
}



/* =========================
   MAIN LAYOUT
========================= */

.tkb-layout {
    display: grid;
    grid-template-columns: var(--chat-width) 1fr;
    overflow: hidden;
}


/* =========================
   CHAT PANEL
========================= */

.chat-panel {
    display: flex;
    flex-direction: column;
    background: var(--bg-panel);
    border-right: 1px solid var(--border);
    min-height: 0;
}


/* HEADER */

.chat-header {
    display: flex;
    align-items: center;
    padding: 10px 14px;
    background: #1f2937;
    color: white;
}

.bot-avatar {
    font-size: 22px;
    margin-right: 8px;
}

.header-info h5 {
    font-size: 14px;
    font-weight: 600;
}

.header-info small {
    opacity: .7;
}

.btn-reset {
    margin-left: auto;
    border: none;
    background: var(--danger);
    color: white;
    padding: 5px 10px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 12px;
}



/* =========================
   CHAT BOX
========================= */

.chat-box {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    padding: 12px;
    background: #fafafa;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.chat-box {
    scroll-behavior: smooth;
}

/* MESSAGE */

.message-row {
    display: flex;
}

    .message-row.user {
        justify-content: flex-end;
    }

    .message-row.bot {
        justify-content: flex-start;
    }

.message-bubble {
    max-width: 85%;
    padding: 8px 10px;
    border-radius: 10px;
    font-size: 13px;
    line-height: 1.4;
}

.message-row.bot .message-bubble {
    background: white;
    border: 1px solid var(--border);
}

.message-row.user .message-bubble {
    background: var(--primary);
    color: white;
}



/* OPTIONS */

.options-container {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 6px;
}

.btn-opt {
    border: 1px solid var(--border);
    background: white;
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 11px;
    cursor: pointer;
}



/* =========================
   INPUT AREA
========================= */

.chat-input-area {
    flex-shrink: 0;
    display: flex;
    gap: 6px;
    padding: 10px;
    border-top: 1px solid var(--border);
    background: white;
}
    .chat-input-area input {
        flex: 1;
        padding: 8px 10px;
        border-radius: 6px;
        border: 1px solid #d1d5db;
        font-size: 13px;
    }

.btn-send {
    padding: 0 14px;
    border: none;
    border-radius: 6px;
    background: var(--primary);
    color: white;
    cursor: pointer;
    font-size: 13px;
}



/* =========================
   DASHBOARD PANEL
========================= */

.dashboard-panel {
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    padding: 18px 40px;
    gap: 16px;
}



/* SECTIONS */

.panel-section {
    max-width: 1100px;
    width: 100%;
    margin: auto;
}

    .panel-section h6 {
        font-size: 12px;
        margin-bottom: 8px;
        color: var(--text-muted);
        text-transform: uppercase;
        letter-spacing: .5px;
    }

.panel-card {
    background: white;
    padding: 14px;
    border-radius: 8px;
    border: 1px solid var(--border);
}



/* =========================
   SCHEDULE GRID
========================= */

.tkb-grid-container {
    max-height: 420px;
    overflow: auto;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: white;
}

.tkb-grid {
    width: 100%;
    border-collapse: collapse;
    table-layout: fixed;
    font-size: 11px;
    border: 2px solid var(--border);
}

    .tkb-grid th,
    .tkb-grid td {
        border: 1px solid #cbd5e1;
    }

    .tkb-grid th {
        position: sticky;
        top: 0;
        background: #f8fafc;
        padding: 8px;
        border-bottom: 2px solid var(--border);
        color: var(--text-muted);
    }

    .tkb-grid td {
        height: 28px;
        padding: 2px 4px;
        vertical-align: middle;
    }

.tiet-col {
    width: 32px;
    text-align: center;
    font-weight: 600;
    background: #f8fafc;
    position: sticky;
    left: 0;
    border-right: 2px solid var(--border);
    font-size: 11px;
}

.buoi-col {
    width: 40px;
    text-align: center;
    font-size: 11px;
    font-weight: 600;
    background: #f1f5f9;
}

.row-sang td {
    background: #f8fafc;
}

.row-chieu td {
    background: #fff7ed;
}

.row-divider td {
    border-top: 3px solid #64748b;
}

.mon {
    font-weight: 600;
    font-size: 11px;
    line-height: 1.1;
    color: var(--primary);
}

.gv {
    font-size: 9px;
    color: var(--text-muted);
}

.tkb-grid tbody tr:hover td {
    background: #eef2ff;
}

/* TEXT */

.mon {
    font-weight: 600;
    font-size: 12px;
    color: var(--primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.gv {
    font-size: 10px;
    color: var(--text-muted);
}



/* =========================
   HIGHLIGHTS
========================= */

.cell-fixed {
    background: var(--primary-light);
}

.cell-conflict {
    background: #fef2f2;
    border: 1px solid #fecaca;
}