/* --- Base & Typography --- */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+TC:wght@400;500;700&display=swap');

:root {
    --background-primary: #1E1E1E; /* A slightly lighter, more professional dark gray */
    --background-secondary: #2D2D2D;
    --background-tertiary: #3C3C3C;
    --text-primary: #EAEAEA;
    --text-secondary: #AAAAAA;
    --accent-primary: #00BFFF; /* Deep Sky Blue - professional and clear */
    --border-color: #444444;
    --success-color: #2E8B57; /* SeaGreen */
    --danger-color: #DC143C;  /* Crimson */
}

body {
    font-family: 'Noto Sans TC', sans-serif;
    background-color: var(--background-primary);
    color: var(--text-primary);
    margin: 0;
    padding: 0;
    min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Noto Sans TC', sans-serif;
    font-weight: 700;
    color: var(--text-primary);
}


/* --- Login Page Specifics --- */
.login-body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.login-container {
    background-color: var(--background-secondary);
    padding: 40px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    width: 100%;
    max-width: 400px;
    text-align: center;
}

.login-container h1 {
    margin-bottom: 24px;
    font-weight: 700;
    color: var(--accent-primary);
}

.form-group {
    margin-bottom: 20px;
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    color: var(--text-secondary);
}

.form-group input {
    width: 100%;
    padding: 12px;
    background-color: var(--background-primary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 16px;
    box-sizing: border-box;
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 2px rgba(0, 191, 255, 0.3);
}

.btn {
    width: 100%;
    padding: 12px;
    background-color: var(--accent-primary);
    border: none;
    border-radius: 6px;
    color: #fff;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.btn:hover {
    background-color: #00A8E6; /* Slightly darker blue */
}

.error-message {
    color: var(--danger-color);
    background-color: rgba(220, 20, 60, 0.1);
    padding: 10px;
    border-radius: 6px;
    margin-bottom: 20px;
    font-size: 14px;
    border: 1px solid var(--danger-color);
}


/* --- Main Panel Layout --- */
.panel-container {
    display: flex;
    height: 100vh;
}

.sidebar {
    width: 220px;
    background-color: var(--background-secondary);
    border-right: 1px solid var(--border-color);
    padding: 20px;
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}

.sidebar-header h2 {
    color: var(--accent-primary);
    text-align: center;
    margin-bottom: 40px;
}

.nav-menu {
    list-style: none;
    padding: 0;
    margin: 0;
}

.nav-menu li a {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 12px 15px;
    margin-bottom: 5px;
    display: block;
    border-radius: 6px;
    font-weight: 500;
    transition: all 0.2s ease;
}

.nav-menu li a:hover {
    background-color: var(--background-tertiary);
    color: var(--text-primary);
}

.nav-menu li a.active {
    background-color: var(--accent-primary);
    color: #fff;
}

.main-content {
    flex-grow: 1;
    padding: 30px 40px;
    overflow-y: auto;
}

.page-header {
    margin-top: 0;
    margin-bottom: 30px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 15px;
}

/* --- Stats Cards --- */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background-color: var(--background-secondary);
    padding: 20px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.stat-card-title {
    color: var(--text-secondary);
    font-size: 14px;
    margin: 0 0 10px 0;
    font-weight: 500;
}

.stat-card-value {
    color: var(--text-primary);
    font-size: 32px;
    font-weight: 700;
    margin: 0;
}
.stat-card-value.online-count {
    color: var(--success-color);
}
.stat-card-value.offline-count {
    color: var(--danger-color);
}


/* --- Batch Actions & Controls --- */
.client-list-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    margin-bottom: 15px;
    background-color: var(--background-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
}

.client-list-controls label {
    font-size: 14px;
    color: var(--text-secondary);
    cursor: pointer;
    margin-left: 8px;
    user-select: none;
}

.batch-actions-bar {
    display: flex;
    align-items: center;
    gap: 15px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.batch-actions-bar.visible {
    opacity: 1;
    visibility: visible;
}

#selectionCount {
    font-size: 14px;
    color: var(--text-secondary);
}

.btn-batch {
    padding: 6px 12px;
    font-size: 14px;
    width: auto;
}

.btn-danger {
     background-color: var(--danger-color);
}
.btn-danger:hover {
     background-color: #B22222; /* Firebrick */
}


/* --- Custom Checkbox --- */
.custom-checkbox {
    appearance: none;
    -webkit-appearance: none;
    background-color: var(--background-primary);
    border: 1px solid var(--border-color);
    width: 18px;
    height: 18px;
    border-radius: 4px;
    cursor: pointer;
    position: relative;
    transition: all 0.2s ease;
    vertical-align: middle;
}

.custom-checkbox:checked {
    background-color: var(--accent-primary);
    border-color: var(--accent-primary);
}

.custom-checkbox:checked::after {
    content: '';
    position: absolute;
    left: 5px;
    top: 2px;
    width: 4px;
    height: 8px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}


/* --- Client List (Card-based) --- */
.client-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.client-card {
    background-color: var(--background-secondary);
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--border-color);
    border-radius: 8px;
    padding: 10px 15px;
    display: flex;
    align-items: center;
    transition: all 0.2s ease-in-out;
}

.client-card:hover {
    border-color: var(--accent-primary);
}

.client-card.selected {
    background-color: var(--background-tertiary);
    border-left: 4px solid var(--accent-primary);
}
.client-card.online-card {
     border-left-color: var(--success-color);
}
.client-card.offline-card {
     border-left-color: var(--danger-color);
}

.client-card-data {
    display: flex;
    flex-grow: 1;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.data-point {
    display: flex;
    flex-direction: column;
    padding: 0 8px; /* Reduced padding */
}

/* Re-balanced flex-basis percentages to ensure no wrapping */
.data-point.client-select { flex-basis: 3%; flex-shrink: 0; padding-left: 0; }
.data-point.client-status { flex-basis: 7%; flex-shrink: 0; }
.data-point.client-hwid { flex-basis: 10%; }
.data-point.client-ip { flex-basis: 12%; }
.data-point.client-os { flex-basis: 16%; }
.data-point.client-uac { flex-basis: 7%; flex-shrink: 0; }
.data-point.client-persistence { flex-basis: 7%; flex-shrink: 0; }
.data-point.client-av { flex-basis: 12%; }
.data-point.client-last-seen { flex-basis: 18%; text-align: right; padding-right: 0;}

.data-label {
    font-size: 11px;
    color: var(--text-secondary);
    margin-bottom: 4px;
    text-transform: uppercase;
    font-weight: 500;
}

.data-value {
    font-size: 14px;
    color: var(--text-primary);
    white-space: nowrap; /* Prevent text from wrapping */
    overflow: hidden;      /* Hide overflow */
    text-overflow: ellipsis; /* Add ellipsis if it still overflows */
}

.data-value.hwid {
    color: var(--accent-primary);
    font-weight: 700;
}

.status-indicator {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: 8px;
    vertical-align: middle;
}

.status-online {
    background-color: var(--success-color);
}

.status-offline {
    background-color: var(--danger-color);
}

.uac-elevated {
    color: var(--danger-color);
    font-weight: 700;
}

.uac-user {
    color: var(--success-color);
}

.persistence-yes {
    color: var(--danger-color);
    font-weight: 700;
}

.persistence-no {
    color: var(--text-secondary);
}

.av-created {
    color: var(--danger-color);
    font-weight: 700;
}

.client-card-empty {
    background-color: var(--background-secondary);
    border: 1px dashed var(--border-color);
    padding: 40px;
    text-align: center;
    border-radius: 8px;
    color: var(--text-secondary);
}