/**
 * UI6 - Tiểu Minh Đồng Hành Học Đường
 * File: ui6/css/ui6-donghang.css
 * Version: 1.0.0
 * 
 * Clone từ UI4, thêm styles cho 7-section answer, escalation box, legal box
 */

/* ============================================
   CSS VARIABLES
============================================ */
:root {
    --ui6-primary: #2563eb;
    --ui6-primary-dark: #1d4ed8;
    --ui6-primary-light: #eff6ff;
    --ui6-secondary: #4f726c;
    --ui6-active: #F2ECD9;
    --ui6-active-text: #333333;
    --ui6-text: #1a1a1a;
    --ui6-text-muted: #5f6368;
    --ui6-bg: #f0f4f8;
    --ui6-bg-light: #f5f5f0;
    --ui6-bg-gray: #e8ecf0;
    --ui6-max-width: 800px;
    --ui6-radius-sm: 8px;
    --ui6-radius-md: 12px;
    --ui6-radius-lg: 16px;
}

/* ============================================
   CONTAINER
============================================ */
.ui6-container {
    min-height: 100vh;
    padding: 25px;
    background: var(--ui6-bg);
}
.ui6-wrapper {
    max-width: var(--ui6-max-width);
    margin: 0 auto;
}

/* ============================================
   HEADER
============================================ */
.ui6-header {
    text-align: center;
    padding: 20px 0 10px;
}
.ui6-header-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}
.ui6-header-home {
    display: inline-flex;
    align-items: center;
    color: #666;
    transition: color 0.2s;
}
.ui6-header-home:hover {
    color: #1e73be;
}
.ui6-header-home svg {
    width: 26px;
    height: 26px;
}
.ui6-header-icon { font-size: 40px; }
.ui6-header-text {
    font-size: 28px;
    font-weight: 700;
    color: #1e73be;
}

/* ============================================
   USER TABS (Teacher / Student)
============================================ */
.ui6-user-tabs {
    display: flex;
    gap: 12px;
    margin-top: 5px;
    padding: 0 20px 15px;
    justify-content: center;
}
.ui6-user-tab {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    background: #fff;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    cursor: pointer;
    transition: all 0.25s ease;
    font-size: 13px;
    font-weight: 600;
    color: #4f726c;
    letter-spacing: 0.3px;
}
.ui6-user-tab:not(.active):hover {
    transform: translateY(-2px);
    border-color: #60a5fa;
    box-shadow: 0 4px 12px rgba(37,99,235,0.2);
    background: var(--ui6-primary-light);
    color: var(--ui6-primary);
}
.ui6-user-tab.active:hover {
    transform: translateY(-2px);
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    box-shadow: 0 6px 18px rgba(37,99,235,0.45);
    color: #fff;
}
.ui6-user-tab.active {
    border-color: #2563eb;
    background: linear-gradient(135deg, #60a5fa 0%, #2563eb 100%);
    color: #fff;
    box-shadow: 0 4px 15px rgba(37,99,235,0.35);
}
.ui6-tab-icon { font-size: 20px; }
.ui6-tab-label {
    font-weight: 700;
    text-transform: uppercase;
    font-size: 12px;
}
.ui6-tab-count {
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 700;
    min-width: 28px;
    text-align: center;
}
.ui6-user-tab.active .ui6-tab-count {
    background: rgba(255,255,255,0.35);
    color: #fff;
}
.ui6-user-tab:not(.active) .ui6-tab-count {
    background: var(--ui6-primary-light);
    color: var(--ui6-primary);
}

/* ============================================
   CATEGORIES
============================================ */
.ui6-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin-bottom: 24px;
}
.ui6-cat-btn {
    padding: 10px 14px;
    border-radius: var(--ui6-radius-sm);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    border: 2px solid var(--ui6-primary);
    background: #e8e8e8;
    color: var(--ui6-text);
    transition: all 0.2s;
}
.ui6-cat-btn:hover { background: var(--ui6-active); }
.ui6-cat-btn.active {
    background: var(--ui6-active);
    color: var(--ui6-active-text);
    border-color: var(--ui6-primary);
}
.ui6-cat-btn.all-btn { border-color: var(--ui6-secondary); }
.ui6-cat-btn.all-btn:hover,
.ui6-cat-btn.all-btn.active { background: var(--ui6-active); color: var(--ui6-active-text); }
.ui6-cat-count {
    padding: 2px 8px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 700;
    background: rgba(0,0,0,0.08);
}
.ui6-cat-btn.active .ui6-cat-count { background: rgba(255,255,255,0.3); }

/* ============================================
   SEARCH
============================================ */
.ui6-search { position: relative; margin-bottom: 24px; }
.ui6-search-icon {
    position: absolute; left: 16px; top: 50%;
    transform: translateY(-50%);
    font-size: 18px; color: var(--ui6-primary);
    pointer-events: none; z-index: 1;
}
.ui6-search-input {
    width: 100%;
    padding: 16px 50px 16px 70px !important;
    border-radius: var(--ui6-radius-md);
    border: 2px solid var(--ui6-primary);
    font-size: 16px; color: var(--ui6-text);
    outline: none; background: #e8e8e8;
}
.ui6-search-input:focus { box-shadow: 0 0 0 3px rgba(37,99,235,0.15); }
.ui6-search-input::placeholder { color: var(--ui6-text-muted); }
.ui6-search-clear {
    position: absolute; right: 12px; top: 50%;
    transform: translateY(-50%);
    width: 28px; height: 28px; border-radius: 6px;
    border: none; background: #e8e8e8;
    cursor: pointer; display: none;
    align-items: center; justify-content: center;
    font-size: 16px; color: var(--ui6-text-muted);
}
.ui6-search-clear.show { display: flex; }

/* ============================================
   RESULTS
============================================ */
.ui6-results {
    background: #e8e8e8;
    border-radius: var(--ui6-radius-lg);
    overflow: hidden;
    border: 2px solid var(--ui6-primary);
    margin-bottom: 24px;
}
.ui6-results-header {
    padding: 14px 20px;
    background: var(--ui6-bg-gray);
    border-bottom: 2px solid rgba(37,99,235,0.2);
    font-size: 15px; font-weight: 600;
    color: var(--ui6-text-muted);
}
.ui6-results-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px; padding: 16px;
}

/* ============================================
   SITUATION CARD
============================================ */
.ui6-situation {
    padding: 16px;
    border-radius: var(--ui6-radius-md);
    border: 2px solid #e5e7eb;
    background: var(--ui6-bg);
    cursor: pointer;
    display: flex; align-items: flex-start;
    gap: 12px; transition: all 0.2s;
}
.ui6-situation:hover {
    border-color: var(--ui6-primary);
    background: var(--ui6-primary-light);
}
.ui6-situation-icon {
    width: 36px; height: 36px;
    border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    font-size: 18px; flex-shrink: 0;
    background: #e8e8e8;
}
.ui6-situation-content { flex: 1; min-width: 0; }
.ui6-situation-text { font-size: 15px; font-weight: 600; color: var(--ui6-text); line-height: 1.4; margin-bottom: 4px; }
.ui6-situation-cat { font-size: 13px; color: var(--ui6-text-muted); }
.ui6-situation-arrow { color: var(--ui6-primary); font-size: 18px; flex-shrink: 0; }

/* Risk badge */
.ui6-risk-badge {
    display: inline-block;
    font-size: 12px;
    vertical-align: middle;
}

/* ============================================
   VIEW CONTROLS
============================================ */
.ui6-view { display: none; }
.ui6-view.active { display: block; }

/* ============================================
   ANSWER VIEW
============================================ */
.ui6-answer-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--ui6-text);
    margin-bottom: 16px;
    line-height: 1.4;
}
.ui6-answer-box {
    background: #fff;
    border-radius: var(--ui6-radius-lg);
    border: 2px solid var(--ui6-primary);
    overflow: hidden;
    margin-bottom: 16px;
}
.ui6-answer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: var(--ui6-bg-gray);
    border-bottom: 2px solid rgba(37,99,235,0.15);
}
.ui6-answer-brand { display: flex; align-items: center; gap: 6px; }
.ui6-answer-avatar { font-size: 20px; }
.ui6-answer-name { font-weight: 700; color: var(--ui6-primary); font-size: 15px; }
.ui6-current-cat { font-size: 14px; color: var(--ui6-primary); font-weight: 600; }

.ui6-answer-content {
    padding: 20px;
    font-size: 15px;
    line-height: 1.7;
    color: var(--ui6-text);
    max-height: 70vh;
    overflow-y: auto;
}
.ui6-answer-content p { margin-bottom: 12px; }
.ui6-answer-content strong { color: var(--ui6-primary-dark); }

/* ============================================
   ANSWER SECTIONS (7 parts)
============================================ */
.ui6-section {
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid #e5e7eb;
}
.ui6-section:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
.ui6-section-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--ui6-primary);
    margin-bottom: 10px;
}
.ui6-list {
    list-style: disc;
    padding-left: 20px;
    margin: 8px 0;
}
.ui6-list li {
    margin-bottom: 6px;
    line-height: 1.6;
}
.ui6-script-list { list-style: '💬 '; }
.ui6-donot-list { list-style: '❌ '; }
.ui6-donot-list li { color: #b91c1c; }

/* ============================================
   ESCALATION BOX
============================================ */
.ui6-escalation-box {
    border-radius: var(--ui6-radius-lg);
    padding: 20px;
    margin-bottom: 16px;
    border: 2px solid #fbbf24;
    background: #fffbeb;
}
.ui6-escalation-box.risk-critical {
    border-color: #ef4444;
    background: #fef2f2;
}
.ui6-escalation-box.risk-high {
    border-color: #f59e0b;
    background: #fffbeb;
}
.ui6-escalation-header {
    font-size: 16px;
    font-weight: 700;
    color: #b91c1c;
    margin-bottom: 12px;
}
.ui6-esc-label {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 12px;
    color: #92400e;
}
.ui6-esc-section { margin-bottom: 12px; }
.ui6-esc-section strong { color: #92400e; }
.ui6-esc-section ul, .ui6-esc-section ol {
    padding-left: 20px;
    margin: 6px 0;
}
.ui6-esc-section li { margin-bottom: 4px; line-height: 1.5; }
.ui6-hotline-grid {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 8px;
}
.ui6-hotline-card {
    background: #fff;
    border: 2px solid #fbbf24;
    border-radius: 10px;
    padding: 12px 16px;
    min-width: 140px;
    text-align: center;
}
.ui6-hotline-number {
    font-size: 20px;
    font-weight: 700;
    color: #dc2626;
    text-decoration: none;
    display: block;
    margin-bottom: 4px;
}
.ui6-hotline-name { font-size: 13px; font-weight: 600; color: var(--ui6-text); }
.ui6-hotline-note { font-size: 12px; color: var(--ui6-text-muted); margin-top: 2px; }

/* ============================================
   LEGAL BOX
============================================ */
.ui6-legal-box {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    background: #f0f9ff;
    border: 1px solid #bae6fd;
    border-radius: var(--ui6-radius-md);
    padding: 14px 16px;
    margin-bottom: 16px;
}
.ui6-legal-icon { font-size: 20px; flex-shrink: 0; }
.ui6-legal-lines p {
    font-size: 13px;
    color: #475569;
    line-height: 1.5;
    margin-bottom: 4px;
}

/* ============================================
   BACK BUTTON
============================================ */
.ui6-back-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    border-radius: var(--ui6-radius-sm);
    border: 2px solid var(--ui6-primary);
    background: #fff;
    color: var(--ui6-primary);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}
.ui6-back-btn:hover {
    background: var(--ui6-primary-light);
}
.ui6-answer-header .ui6-back-btn {
    padding: 0 !important;
    border: none !important;
    background: transparent !important;
    color: var(--ui6-primary) !important;
    font-size: 14px !important;
}
.ui6-answer-header .ui6-back-btn:hover { text-decoration: underline; }

/* ============================================
   TOOLBAR
============================================ */
.ui6-answer-toolbar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    padding: 12px;
    border-top: 1px solid #e5e7eb;
}
.ui6-toolbar-btn {
    background: none;
    border: none;
    color: var(--ui6-primary);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    padding: 6px 12px;
    border-radius: 6px;
}
.ui6-toolbar-btn:hover { background: var(--ui6-primary-light); }

/* ============================================
   ASK MORE
============================================ */
.ui6-ask-more {
    margin-bottom: 16px;
}
.ui6-ask-more-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--ui6-primary);
    margin-bottom: 10px;
}
.ui6-ask-input {
    width: 100%;
    padding: 14px 16px;
    border-radius: var(--ui6-radius-md);
    border: 2px solid var(--ui6-primary);
    font-size: 16px;
    outline: none;
    margin-bottom: 10px;
}
.ui6-ask-input:focus { box-shadow: 0 0 0 3px rgba(37,99,235,0.15); }
.ui6-ask-btn {
    padding: 12px 24px;
    border-radius: var(--ui6-radius-md);
    border: none;
    background: var(--ui6-primary);
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
}
.ui6-ask-btn:hover { background: var(--ui6-primary-dark); }

/* ============================================
   WARNING & FOOTER
============================================ */
.ui6-warning {
    text-align: center;
    padding: 10px;
    font-size: 13px;
    color: #b45309;
    background: #fffbeb;
    border-radius: var(--ui6-radius-sm);
    margin-bottom: 12px;
}
.ui6-footer {
    text-align: center;
    padding: 8px;
    font-size: 14px;
    color: var(--ui6-text-muted);
}
.ui6-footer a {
    color: var(--ui6-primary);
    text-decoration: none;
    font-weight: 600;
}

/* ============================================
   CHAT VIEW
============================================ */
.ui6-chat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 0;
    margin-bottom: 16px;
    border-bottom: 1px solid rgba(0,0,0,0.1);
}
.ui6-chat-back {
    color: var(--ui6-primary);
    font-weight: 600;
    cursor: pointer;
    font-size: 14px;
}
.ui6-chat-back:hover { text-decoration: underline; }
.ui6-chat-brand { font-weight: 700; color: var(--ui6-primary); font-size: 16px; }
.ui6-chat-cat { color: var(--ui6-primary); font-weight: 600; font-size: 14px; }
.ui6-chat-title { font-size: 18px; font-weight: 700; margin-bottom: 16px; color: var(--ui6-text); }

.ui6-messages {
    max-height: 50vh;
    overflow-y: auto;
    padding: 8px 0;
    margin-bottom: 12px;
}
.ui6-message { margin-bottom: 16px; }
.ui6-message-label {
    font-size: 13px; font-weight: 700;
    margin-bottom: 6px;
    display: flex; align-items: center; gap: 6px;
}
.ui6-message-label.user { color: var(--ui6-primary); }
.ui6-message-label.bot { color: var(--ui6-text-muted); }
.ui6-message-content {
    padding: 14px 18px;
    border-radius: var(--ui6-radius-md);
    font-size: 15px;
    line-height: 1.7;
}
.ui6-message-content.user {
    background: var(--ui6-primary-light);
    border: 2px solid var(--ui6-primary);
}
.ui6-message-content.bot {
    background: var(--ui6-bg-gray);
    border: 2px solid #e5e7eb;
}
.ui6-message-content strong { color: var(--ui6-primary-dark); }

/* Typing indicator */
.ui6-typing {
    display: flex; align-items: center;
    gap: 8px; padding: 12px 16px;
    font-size: 14px; color: var(--ui6-text-muted);
}
.ui6-typing-dots { display: flex; gap: 4px; }
.ui6-typing-dots span {
    width: 8px; height: 8px; border-radius: 50%;
    background: var(--ui6-primary);
    animation: ui6typing 1.4s infinite ease-in-out both;
}
.ui6-typing-dots span:nth-child(1) { animation-delay: 0s; }
.ui6-typing-dots span:nth-child(2) { animation-delay: 0.2s; }
.ui6-typing-dots span:nth-child(3) { animation-delay: 0.4s; }
@keyframes ui6typing {
    0%, 80%, 100% { transform: scale(0.6); opacity: 0.5; }
    40% { transform: scale(1); opacity: 1; }
}

/* Chat input */
.ui6-chat-input { display: flex; gap: 12px; }
.ui6-chat-input input {
    flex: 1; padding: 14px 16px;
    border-radius: var(--ui6-radius-md);
    border: 2px solid var(--ui6-primary);
    font-size: 16px; outline: none;
}
.ui6-chat-input input:focus { box-shadow: 0 0 0 3px rgba(37,99,235,0.15); }
.ui6-chat-input button {
    padding: 14px 24px;
    border-radius: var(--ui6-radius-md);
    border: none;
    background: var(--ui6-primary);
    color: #fff;
    font-size: 16px; font-weight: 700;
    cursor: pointer;
}
.ui6-chat-input button:hover { background: var(--ui6-primary-dark); }

.ui6-chat-toolbar {
    display: flex; align-items: center; justify-content: center;
    gap: 20px; padding: 12px 0; margin-top: 12px;
}
.ui6-text-btn {
    background: none; border: none;
    color: var(--ui6-primary);
    font-size: 14px; font-weight: 600;
    cursor: pointer; padding: 4px 8px;
}
.ui6-text-btn:hover { text-decoration: underline; }

/* ============================================
   EMPTY STATE
============================================ */
.ui6-empty { padding: 48px; text-align: center; grid-column: 1 / -1; }
.ui6-empty-icon { font-size: 48px; opacity: 0.3; margin-bottom: 12px; }
.ui6-empty-text { font-size: 16px; color: var(--ui6-text-muted); }

/* ============================================
   RESPONSIVE
============================================ */
@media (max-width: 640px) {
    .ui6-results-grid { grid-template-columns: 1fr; }
    .ui6-container { font-size: 20px; }
    .ui6-header-text { font-size: 28px; }
    .ui6-cat-btn { padding: 12px 16px; font-size: 18px; }
    .ui6-search-input { font-size: 20px; }
    .ui6-results-header { font-size: 19px; }
    .ui6-situation { font-size: 19px; }
    .ui6-answer-title { font-size: 24px; }
    .ui6-answer-content { padding: 16px; font-size: 19px; }
    .ui6-ask-input { font-size: 19px; }
    .ui6-ask-btn, .ui6-back-btn { font-size: 18px; }
    .ui6-warning { font-size: 17px; }
    .ui6-footer { font-size: 17px; }
    .ui6-message-content { font-size: 19px; }
    .ui6-user-tabs { flex-direction: column; padding: 5px 15px 15px; gap: 10px; }
    .ui6-user-tab { justify-content: center; padding: 14px 20px; }
    .ui6-tab-label { font-size: 11px; }
    .ui6-hotline-grid { flex-direction: column; }
}