/*
 * style.css - Giao diện chính của QC Lab Manager
 * 
 * Thiết kế: dark theme nhẹ, đơn giản, dễ chỉnh sửa
 * Layout: sidebar + main content
 */

/* ===== RESET CƠ BẢN ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* ===== BIẾN MÀU (dễ thay đổi theme) ===== */
:root {
    --bg-primary: #1a1d23;
    --bg-secondary: #22262e;
    --bg-card: #2a2f38;
    --bg-hover: #333842;
    --text-primary: #ffffff;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    --accent: #007d7a;
    --accent-hover: #005f5d;
    --accent-yellow: #f5df17;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --border: #374151;
    --sidebar-width: 240px;
    --sidebar-bg: #007d7a;
}

/* ===== BODY ===== */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    display: flex;
    min-height: 100vh;
}

/* ===== SIDEBAR ===== */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--sidebar-bg);
    border-right: 1px solid var(--border);
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    overflow-y: auto;
    z-index: 100;
}

.sidebar-header {
    padding: 16px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.15);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.sidebar-logo {
    width: 120px;
    height: auto;
    display: block;
}

.sidebar-header h2 {
    font-size: 1.1rem;
    color: var(--accent-yellow);
    font-weight: 700;
    letter-spacing: 1px;
}

.sidebar-header small {
    color: rgba(255,255,255,0.75);
    font-size: 0.75rem;
    text-align: center;
}

.sidebar-menu {
    list-style: none;
    padding: 10px 0;
}

.sidebar-menu li a {
    display: block;
    padding: 12px 20px;
    color: rgba(255,255,255,0.85);
    text-decoration: none;
    transition: all 0.2s;
    border-left: 3px solid transparent;
    font-size: 0.95rem;
}

.sidebar-menu li a:hover {
    background-color: rgba(255,255,255,0.12);
    color: #ffffff;
}

.sidebar-menu li a.active {
    background-color: rgba(255,255,255,0.18);
    color: var(--accent-yellow);
    border-left-color: var(--accent-yellow);
    font-weight: 600;
}

/* ===== MAIN CONTENT ===== */
.main-content {
    margin-left: var(--sidebar-width);
    padding: 30px;
    flex: 1;
    width: calc(100% - var(--sidebar-width));
}

/* ===== PAGE HEADER ===== */
.page-header {
    margin-bottom: 30px;
    display: flex;
    align-items: center;
    gap: 15px;
    flex-wrap: wrap;
}

.page-header h1 {
    font-size: 1.8rem;
    font-weight: 600;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 0.95rem;
    width: 100%;
}

/* ===== CARD ===== */
.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    margin-bottom: 20px;
    overflow: hidden;
}

.card-header {
    padding: 15px 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-header h2 {
    font-size: 1.1rem;
    font-weight: 500;
}

.card-body {
    padding: 20px;
}

/* ===== CARD GRID (trang chủ) ===== */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.device-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.2s;
    overflow: hidden;
}

.device-card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 125, 122, 0.2);
}

.device-card-header {
    padding: 15px 20px;
    border-bottom: 1px solid var(--border);
    background-color: var(--bg-secondary);
}

.device-code {
    font-family: monospace;
    font-size: 0.9rem;
    color: var(--accent);
    font-weight: 600;
}

.device-card-body {
    padding: 20px;
}

.device-card-body h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

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

.device-limits {
    color: var(--accent);
    font-size: 0.85rem;
    margin-bottom: 4px;
    font-weight: 500;
}

/* ===== STATS GRID ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
    margin-bottom: 20px;
}

.stat-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 20px;
    text-align: center;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 5px;
}

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

/* ===== TABLE ===== */
.table-wrapper {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.data-table th,
.data-table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.data-table th {
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.data-table tr:hover {
    background-color: var(--bg-hover);
}

.data-table .row-warning {
    background-color: rgba(239, 68, 68, 0.1);
}

.data-table .row-warning:hover {
    background-color: rgba(239, 68, 68, 0.15);
}

.data-table .row-alert {
    background-color: rgba(245, 158, 11, 0.1);
}

.data-table .row-alert:hover {
    background-color: rgba(245, 158, 11, 0.15);
}

.action-cell {
    white-space: nowrap;
}

.result-count {
    margin-top: 10px;
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* ===== BADGE ===== */
.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

.badge-success {
    background-color: rgba(16, 185, 129, 0.15);
    color: var(--success);
}

.badge-danger {
    background-color: rgba(239, 68, 68, 0.15);
    color: var(--danger);
}

.badge-warning {
    background-color: rgba(245, 158, 11, 0.15);
    color: var(--warning);
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    font-size: 0.9rem;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s;
    font-weight: 500;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.8rem;
}

.btn-primary {
    background-color: var(--accent);
    color: white;
}

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

.btn-secondary {
    background-color: var(--bg-hover);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background-color: var(--border);
}

.btn-danger {
    background-color: var(--danger);
    color: white;
}

.btn-danger:hover {
    background-color: #dc2626;
}

/* ===== FORMS ===== */
.form {
    max-width: 600px;
}

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

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 14px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.95rem;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
}

.form-group textarea {
    resize: vertical;
    font-family: inherit;
}

.form-hint {
    display: block;
    margin-top: 4px;
    color: var(--text-muted);
    font-size: 0.8rem;
}

.required {
    color: var(--danger);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.form-actions {
    display: flex;
    gap: 10px;
    margin-top: 25px;
}

/* ===== FILTER FORM (admin) ===== */
.filter-form {
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
}

.filter-row {
    display: flex;
    gap: 15px;
    align-items: flex-end;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.filter-group label {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.filter-group input {
    padding: 8px 12px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.85rem;
}

.filter-group input:focus {
    outline: none;
    border-color: var(--accent);
}

/* ===== FLASH MESSAGES ===== */
.flash-message {
    padding: 12px 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.9rem;
}

.flash-success {
    background-color: rgba(16, 185, 129, 0.15);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: var(--success);
}

.flash-error {
    background-color: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: var(--danger);
}

.flash-close {
    background: none;
    border: none;
    color: inherit;
    font-size: 1.3rem;
    cursor: pointer;
    padding: 0 5px;
}

/* ===== CHART CONTAINER ===== */
.chart-container {
    position: relative;
    width: 100%;
    height: 520px;
}

/* ===== DEVICE INFO (HTML content) ===== */
.device-info {
    line-height: 1.8;
    color: var(--text-secondary);
}

.device-info h2 {
    color: var(--text-primary);
    font-size: 1.3rem;
    margin-bottom: 15px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
}

.device-info h3 {
    color: var(--text-primary);
    font-size: 1.05rem;
    margin-top: 20px;
    margin-bottom: 10px;
}

.device-info p {
    margin-bottom: 10px;
}

.device-info ul {
    margin-left: 20px;
    margin-bottom: 10px;
}

.device-info ul li {
    margin-bottom: 5px;
}

.device-info .info-table {
    width: 100%;
    max-width: 500px;
    border-collapse: collapse;
    margin-bottom: 15px;
}

.device-info .info-table th,
.device-info .info-table td {
    padding: 8px 12px;
    border: 1px solid var(--border);
    text-align: left;
}

.device-info .info-table th {
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
    font-weight: 500;
    width: 150px;
}

.device-info .info-table td {
    color: var(--text-primary);
}

/* ===== UNIT BADGE ===== */
.unit-badge {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 400;
}

.limit-info {
    font-size: 0.85rem;
    color: var(--text-secondary);
    background-color: var(--bg-secondary);
    padding: 4px 10px;
    border-radius: 4px;
}

/* ===== DATA DETAILS (collapsible table) ===== */
.data-details {
    margin-top: 20px;
    border-top: 1px solid var(--border);
    padding-top: 15px;
}

.data-details summary {
    cursor: pointer;
    color: var(--accent);
    font-weight: 500;
    padding: 8px 0;
    user-select: none;
}

.data-details summary:hover {
    color: var(--accent-hover);
}

.stats-details {
    margin-top: 20px;
    border-top: 1px solid var(--border);
    padding-top: 15px;
}

.stats-details summary {
    cursor: pointer;
    color: var(--accent);
    font-weight: 500;
    padding: 8px 0;
    user-select: none;
}

.stats-details summary:hover {
    color: var(--accent-hover);
}

/* ===== INPUT READONLY ===== */
.input-readonly {
    width: 100%;
    padding: 10px 14px;
    background-color: var(--bg-primary) !important;
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-secondary);
    font-size: 0.95rem;
    cursor: not-allowed;
}

/* ===== FILTER GROUP SELECT ===== */
.filter-group select {
    padding: 8px 12px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.85rem;
}

.filter-group select:focus {
    outline: none;
    border-color: var(--accent);
}

/* ===== EMPTY STATE ===== */
.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
}

/* ===== STATS SECTION (thong ke nang cao) ===== */
.stats-section {
    margin-bottom: 25px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
}

.stats-title {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 15px;
}

.stats-table-wrapper {
    overflow-x: auto;
}

.stats-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

.stats-table th,
.stats-table td {
    padding: 10px 12px;
    border: 1px solid var(--border);
    text-align: left;
}

.stats-table th {
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.8rem;
}

.stats-table td:nth-child(odd) {
    color: var(--text-secondary);
    font-size: 0.82rem;
    width: 30%;
}

.stats-table td:nth-child(even) {
    color: var(--text-primary);
    width: 20%;
}

.stats-note {
    margin-top: 10px;
    padding: 8px 12px;
    background-color: var(--bg-secondary);
    border-radius: 6px;
    color: var(--text-muted);
    font-size: 0.8rem;
}

/* Text colors for stats */
.text-success {
    color: var(--success);
}

.text-danger {
    color: var(--danger);
}

.text-warning {
    color: var(--warning);
}

.header-actions {
    display: flex;
    gap: 8px;
}

.filter-actions {
    display: flex;
    gap: 8px;
    flex-wrap: nowrap;
    align-items: center;

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
    }

    .main-content {
        margin-left: 0;
        width: 100%;
        padding: 20px;
    }

    .card-grid {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .filter-row {
        flex-direction: column;
        align-items: stretch;
    }

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

    body {
        flex-direction: column;
    }

    .stats-table td:nth-child(odd) {
        width: auto;
    }

    .stats-table td:nth-child(even) {
        width: auto;
    }
}