:root {
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --text-color: #f8fafc;
    --text-muted: #94a3b8;
    
    --primary-color: #689f38; /* Warm brand green */
    --primary-hover: #558b2f;
    --primary-glow: rgba(104, 159, 56, 0.25);
    
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --border-color: #334155;
    
    --sidebar-bg: #0f172a;
    --chat-bg: #111827;
    --header-bg: #1e293b;
}

body {
    margin: 0;
    padding: 0;
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    overflow: hidden;
    height: 100vh;
    display: flex;
    flex-direction: column;
}

.screen {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    box-sizing: border-box;
}

.hidden {
    display: none !important;
}

/* 1. LOGIN SCREEN */
#login-screen {
    justify-content: center;
    align-items: center;
    background: radial-gradient(circle at center, #1e293b 0%, #0f172a 100%);
}

.login-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 40px;
    width: 100%;
    max-width: 400px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    box-sizing: border-box;
}

.logo-icon {
    font-size: 4rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.login-card h2 {
    margin: 0 0 10px 0;
    font-weight: 700;
}

.login-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 30px;
}

.input-group {
    margin-bottom: 20px;
}

.input-group input {
    width: 100%;
    padding: 12px 16px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    background-color: #0f172a;
    color: white;
    font-size: 1rem;
    outline: none;
    box-sizing: border-box;
    transition: border-color 0.2s;
}

.input-group input:focus {
    border-color: var(--primary-color);
}

.btn-primary {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 12px 24px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 10px;
    cursor: pointer;
    width: 100%;
    transition: background-color 0.2s, transform 0.1s;
}

.btn-primary:hover {
    background: var(--primary-hover);
}

.btn-primary:active {
    transform: scale(0.98);
}

.error-msg {
    color: var(--danger-color);
    margin-top: 15px;
    font-size: 0.9rem;
    min-height: 1.2rem;
}

/* 2. MAIN DASHBOARD SCREEN */
.dashboard-header {
    background-color: var(--header-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
    box-sizing: border-box;
}

.header-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header-logo span {
    font-size: 2.2rem;
    color: var(--primary-color);
}

.header-logo h1 {
    font-size: 1.3rem;
    margin: 0;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.status-indicator {
    font-size: 0.9rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 8px;
}

.status-indicator .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--danger-color);
}

.status-indicator.online .dot {
    background-color: #10b981;
    box-shadow: 0 0 8px #10b981;
}

.btn-secondary {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-color);
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: background-color 0.2s;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
}

/* Dashboard Body Structure */
.dashboard-body {
    display: flex;
    flex: 1;
    height: calc(100vh - 70px);
    overflow: hidden;
}

/* Sidebar Session List */
.sidebar {
    width: 320px;
    background-color: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.sidebar-title {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.sidebar-title h3 {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
}

.badge {
    background-color: var(--border-color);
    color: var(--text-color);
    padding: 2px 8px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 700;
}

.session-list-container {
    flex: 1;
    overflow-y: auto;
}

.no-sessions {
    padding: 40px 20px;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Sidebar Session Items */
.session-item {
    padding: 16px 20px;
    border-bottom: 1px solid rgba(51, 65, 85, 0.5);
    cursor: pointer;
    transition: background-color 0.2s;
    position: relative;
}

.session-item:hover {
    background-color: rgba(255, 255, 255, 0.02);
}

.session-item.active {
    background-color: rgba(104, 159, 56, 0.1);
    border-left: 4px solid var(--primary-color);
}

.session-header-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.session-id-text {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-color);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    width: 140px;
}

.session-time {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.session-meta-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.session-lang-badge {
    background: #334155;
    font-size: 0.75rem;
    padding: 2px 6px;
    border-radius: 4px;
    font-weight: 600;
}

.badge-status {
    font-size: 0.75rem;
    padding: 2px 8px;
    border-radius: 20px;
    font-weight: 600;
}

.badge-status.pending {
    background-color: rgba(245, 158, 11, 0.2);
    color: #fbbf24;
}

.badge-status.failed {
    background-color: rgba(239, 68, 68, 0.2);
    color: #f87171;
}

.session-preview-text {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 6px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Chat Panel Area */
.chat-panel {
    flex: 1;
    background-color: var(--chat-bg);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.empty-state {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    flex: 1;
    color: var(--text-muted);
    text-align: center;
    padding: 40px;
}

.empty-state span {
    font-size: 5rem;
    margin-bottom: 20px;
    color: var(--border-color);
}

.empty-state h3 {
    margin: 0 0 10px 0;
    color: var(--text-color);
}

.empty-state p {
    max-width: 400px;
    line-height: 1.5;
}

.chat-active-state {
    display: flex;
    flex-direction: column;
    flex: 1;
    height: 100%;
    overflow: hidden;
}

.chat-header {
    padding: 16px 24px;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--header-bg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.client-details {
    display: flex;
    align-items: center;
    gap: 12px;
}

.client-avatar {
    font-size: 2.2rem;
    color: var(--text-muted);
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
    padding: 4px;
}

.client-details h4 {
    margin: 0 0 4px 0;
    font-size: 1rem;
    font-weight: 600;
}

.badge-lang {
    background-color: var(--primary-color);
    color: white;
    font-size: 0.7rem;
    padding: 1px 6px;
    border-radius: 4px;
    font-weight: 700;
}

.btn-archive {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s;
}

.btn-archive:hover {
    color: white;
    border-color: white;
    background-color: rgba(255, 255, 255, 0.05);
}

/* Chat Message Log */
.chat-messages-log {
    flex: 1;
    overflow-y: auto;
    padding: 16px 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.chat-bubble-row {
    display: flex;
    width: 100%;
}

.chat-bubble-row.user {
    justify-content: flex-start;
}

.chat-bubble-row.bot, .chat-bubble-row.moderator {
    justify-content: flex-end;
}

.msg-bubble {
    max-width: 70%;
    min-width: 140px; /* Ensure status bar fits without squishing */
    padding: 8px 12px;
    border-radius: 12px;
    font-size: 0.9rem;
    line-height: 1.4;
    position: relative;
}

.user .msg-bubble {
    background-color: #1f2937;
    color: var(--text-color);
    border-bottom-left-radius: 4px;
    border: 1px solid var(--border-color);
}

.bot .msg-bubble {
    background-color: rgba(104, 159, 56, 0.12);
    color: var(--text-color);
    border-bottom-right-radius: 4px;
    border: 1px solid rgba(104, 159, 56, 0.35);
}

.moderator .msg-bubble {
    background-color: var(--primary-color);
    color: white;
    border-bottom-right-radius: 4px;
}

/* Copy Draft button inside bubble status bar */
.copy-draft-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: 2px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: all 0.2s;
    margin-left: 6px;
    vertical-align: middle;
}

.copy-draft-btn:hover {
    color: var(--warning-color);
    background-color: rgba(245, 158, 11, 0.15);
}

/* High-contrast styles for moderator messages status bar */
.moderator .msg-status-bar {
    color: rgba(255, 255, 255, 0.75);
}

.moderator .msg-time {
    color: rgba(255, 255, 255, 0.75);
}

.moderator .msg-status-badge.approved {
    color: #ffffff;
    font-weight: 600;
}

.msg-bubble p {
    margin: 0;
}

.msg-status-bar {
    display: flex;
    justify-content: space-between;
    gap: 12px; /* Prevent text overlap in narrow bubbles */
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 6px;
}

.msg-status-badge {
    font-weight: 600;
}

.msg-status-badge.pending {
    color: var(--warning-color);
}

.msg-status-badge.approved {
    color: #10b981;
}

.msg-status-badge.failed {
    color: var(--danger-color);
}

/* Moderator input (HITL Control Box) */
.moderator-input-container {
    padding: 20px 24px 24px 24px;
    border-top: 1px solid var(--border-color);
    background-color: var(--header-bg);
}

.moderator-input-box {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.draft-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-color);
    font-size: 0.85rem;
    font-weight: 600;
}

.ai-error-notice {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--danger-color);
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    padding: 10px 14px;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 600;
}

.moderator-textarea {
    width: 100%;
}

.moderator-input-box textarea {
    width: 100%;
    min-height: 120px;
    max-height: 240px;
    padding: 14px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-color);
    color: white;
    font-size: 0.95rem;
    line-height: 1.5;
    outline: none;
    box-sizing: border-box;
    font-family: inherit;
    resize: vertical;
}

.moderator-input-box textarea:focus {
    border-color: var(--primary-color);
}

.input-actions {
    display: flex;
    justify-content: flex-end;
}

.btn-send {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: auto;
    padding: 12px 28px;
}

/* Scrollbars styling */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: #334155;
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: #475569;
}

/* 3. NAVIGATION TABS */
.header-tabs {
    display: flex;
    gap: 8px;
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.tab-btn span {
    font-size: 1.2rem;
}

.tab-btn:hover {
    color: var(--text-color);
    background-color: rgba(255, 255, 255, 0.05);
}

.tab-btn.active {
    color: white;
    background-color: var(--primary-color);
    box-shadow: 0 4px 12px var(--primary-glow);
}

/* 4. REPORTS PANEL LAYOUT */
.reports-layout {
    display: flex;
    flex-direction: column;
    padding: 24px;
    overflow-y: auto;
    height: calc(100vh - 70px);
    box-sizing: border-box;
    gap: 24px;
}

.reports-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 16px;
}

.reports-controls h2 {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 700;
}

.period-selector {
    display: flex;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 4px;
}

.period-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.period-btn:hover {
    color: var(--text-color);
}

.period-btn.active {
    background-color: var(--border-color);
    color: white;
}

/* Stats Summary Cards */
.stats-summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.stat-card {
    background: linear-gradient(135deg, var(--card-bg) 0%, #1e293b 100%);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.stat-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    background-color: var(--primary-glow);
    padding: 12px;
    border-radius: 12px;
}

.stat-info {
    display: flex;
    flex-direction: column;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
}

.stat-value {
    font-size: 1.8rem;
    font-weight: 700;
    margin-top: 4px;
    color: white;
}

/* Charts & Segmentation Layout */
.reports-row {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 24px;
}

@media (max-width: 1024px) {
    .reports-row {
        grid-template-columns: 1fr;
    }
}

.report-box {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.report-box h3 {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-color);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
}

.chart-container {
    position: relative;
    width: 100%;
    height: 350px;
}

/* Nomenclature List Segmentations */
.nomenclature-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.nomenclature-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.nomenclature-header {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    font-weight: 500;
}

.nomenclature-name {
    color: var(--text-color);
}

.nomenclature-count {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.nomenclature-bar-wrapper {
    background-color: #0f172a;
    height: 10px;
    border-radius: 5px;
    overflow: hidden;
    width: 100%;
}

.nomenclature-bar {
    height: 100%;
    background-color: var(--primary-color);
    border-radius: 5px;
    transition: width 0.8s ease-out;
}

/* Read-Only State for Chat Message Log in Archive */
.chat-panel-readonly .moderator-input-container {
    display: none !important;
}

.chat-panel-readonly .btn-archive {
    display: none !important;
}

.readonly-badge {
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--text-muted);
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 0.8rem;
    border: 1px solid var(--border-color);
    display: inline-block;
    margin-left: auto;
}

.btn-stop-ai {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    color: var(--danger-color);
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    margin-left: auto;
    transition: all 0.2s;
}

.btn-stop-ai:hover {
    background: rgba(239, 68, 68, 0.2);
    border-color: rgba(239, 68, 68, 0.4);
}

.reports-row-equal {
    grid-template-columns: 1fr 1fr;
}

/* Hide back button on desktop */
.btn-back-only-mobile {
    display: none;
}

/* Adjust header and body heights dynamically */
.dashboard-header {
    background-color: var(--header-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 12px 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    min-height: 70px;
    height: auto;
    flex-wrap: wrap;
    gap: 12px;
    box-sizing: border-box;
}

.dashboard-body {
    display: flex;
    flex: 1;
    overflow: hidden;
    height: auto; /* Allow flex box calculation */
}

.reports-layout {
    display: flex;
    flex-direction: column;
    padding: 24px;
    overflow-y: auto;
    flex: 1; /* Fit container dynamically */
    box-sizing: border-box;
    gap: 24px;
}

/* Responsive adjustments */
@media (max-width: 1024px) {
    .status-indicator {
        font-size: 0; /* Hide text, keep dot */
    }
    .status-indicator .dot {
        margin: 0;
    }
    .tab-btn {
        padding: 8px 12px;
        font-size: 0.9rem;
    }
}

@media (max-width: 768px) {
    /* Tabs compacting */
    .tab-btn {
        font-size: 0; /* Hide text, keep icon only */
        padding: 8px;
    }
    .tab-btn span {
        margin: 0;
    }
    .header-logo h1 {
        display: none; /* Hide logo title on small screens */
    }

    /* Mobile Sidebar & Chat Panel layout switching */
    .dashboard-body {
        position: relative;
        width: 100vw;
    }
    
    .sidebar {
        width: 100% !important;
        display: flex;
        flex-shrink: 0;
    }
    
    .chat-panel {
        width: 100% !important;
        position: absolute;
        top: 0;
        left: 0;
        height: 100%;
        background-color: var(--chat-bg);
        z-index: 20;
        display: none; /* Hidden on load */
    }
    
    /* When a chat is selected and open on mobile */
    .chat-open-mobile .sidebar {
        display: none !important;
    }
    
    .chat-open-mobile .chat-panel {
        display: flex !important;
    }
    
    /* Back button display */
    .btn-back-only-mobile {
        display: flex !important;
        align-items: center;
        justify-content: center;
        background: transparent;
        border: none;
        color: var(--text-color);
        cursor: pointer;
        padding: 4px;
        margin-right: 8px;
        border-radius: 50%;
    }
    
    .btn-back-only-mobile:hover {
        background-color: rgba(255,255,255,0.1);
    }

    /* Reports layout mobile adjustments */
    .reports-controls {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
    }
    
    .period-selector {
        overflow-x: auto;
        white-space: nowrap;
        display: flex;
        width: 100%;
    }
    
    .period-btn {
        flex: 1;
        padding: 8px 10px;
        font-size: 0.8rem;
    }

    .reports-row-equal {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .login-card {
        padding: 24px 16px;
    }
}

/* Ensure text selection is allowed for messages in the log across all modes */
.chat-messages-log,
.chat-messages-log *,
.msg-bubble,
.msg-bubble p,
.msg-bubble * {
    user-select: text !important;
    -webkit-user-select: text !important;
    -moz-user-select: text !important;
    -ms-user-select: text !important;
    cursor: text;
}