/* ======================== */
/* portal-style.css */
/* CSS cơ sở và chung cho toàn bộ ứng dụng */
/* ======================== */

/* Định nghĩa Biến CSS (Variables) */
:root {
    --primary-color: #3b82f6; /* Xanh dương chính */
    --secondary-color: #1f2937; /* Màu chữ đậm */
    --accent-color: #10b981; /* Màu nhấn (Xanh lá) */
    --card-bg-color: #ffffff;/* Nền card */
    --main-bg-color: #f3f4f6; /* Nền trang chính */
    --border-color: #e5e7eb; /* Màu đường viền */
    --light-bg-color: #f9fafb; /* Nền sáng nhẹ */
    --error-color: #ef4444; /* Màu lỗi (Đỏ) */
    --success-color: #10b981; /* Màu thành công (Xanh lá) */
    --warning-color: #f59e0b; /* Màu cảnh báo (Cam) */
    --text-muted-color: #6b7280; /* Màu chữ xám nhạt */
    --shadow-light: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-heavy: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

/* Base Styles */
* {
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--main-bg-color);
    margin: 0;
    color: var(--secondary-color);
    line-height: 1.5;
}

/* ======================== */
/* Layout & Typography */
/* ======================== */

.main-content-area {
    max-width: 1400px;
    margin: 40px auto;
    padding: 0 20px;
}

.section-title {
    font-size: 1.8rem;
    color: var(--secondary-color);
    margin-bottom: 25px;
    font-weight: 700;
}

.pane-title {
    font-size: 1.5rem;
    color: var(--primary-color);
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 15px;
    margin-top: 0;
    margin-bottom: 25px;
}

.pane-title i {
    margin-right: 10px;
}

.pane-description {
    color: #6b7280;
    margin-bottom: 20px;
    font-style: italic;
}

/* ======================== */
/* Dashboard Layout (Flex Container) */
/* ======================== */

.dashboard-layout {
    display: flex;
    gap: 30px;
    align-items: flex-start;
}

.dashboard-content {
    flex-grow: 1;
}

.dashboard-pane {
    background-color: var(--card-bg-color);
    padding: 30px;
    border-radius: 12px;
    box-shadow: var(--shadow-heavy);
    display: none; /* Mặc định ẩn, JS quản lý */
    animation: fadeIn 0.5s ease-out;
}

.dashboard-pane.active {
    display: block;
}

/* ======================== */
/* Sidebar Navigation */
/* ======================== */
.sidebar {
    flex: 0 0 250px; /* Chiều rộng cố định */
    background-color: var(--card-bg-color);
    border-radius: 12px;
    box-shadow: var(--shadow-heavy);
    padding: 20px 0;
    position: sticky;
    top: 20px; /* Dính khi cuộn */
}

.sidebar-brand {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-color);
    padding: 0 20px 20px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 10px;
}

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

.sidebar-nav-item a {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    text-decoration: none;
    color: var(--secondary-color);
    font-weight: 500;
    transition: background-color 0.3s, color 0.3s;
}

.sidebar-nav-item a i {
    margin-right: 10px;
    font-size: 1.1rem;
}

.sidebar-nav-item a:hover {
    background-color: var(--light-bg-color);
    color: var(--primary-color);
}

.sidebar-nav-item a.active {
    background-color: var(--primary-color);
    color: white;
    border-left: 5px solid var(--accent-color);
}

/* ======================== */
/* 1. Stat Cards (Thẻ thông số) */
/* ======================== */
.stat-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background-color: var(--light-bg-color);
    padding: 20px;
    border-radius: 10px;
    box-shadow: var(--shadow-light);
    display: flex;
    align-items: center;
}

.stat-card i {
    font-size: 2.5rem;
    margin-right: 15px;
    opacity: 0.8;
}

.stat-card .stat-label {
    margin: 0;
    color: #6b7280;
    font-size: 0.9rem;
}

.stat-card .stat-value {
    margin: 0;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--secondary-color);
}

/* Màu sắc cho Icon */
.icon-blue { color: var(--primary-color); }
.icon-green { color: var(--success-color); }
.icon-orange { color: var(--warning-color); }
.icon-red { color: var(--error-color); }

/* Biểu đồ */
.chart-area {
    margin-top: 40px;
    padding: 20px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
}

.chart-area h3 {
    color: #4b5563;
    margin-top: 0;
}

/* ======================== */
/* 2. Data Tables & Buttons */
/* ======================== */
.data-table-container {
    margin-top: 30px;
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--card-bg-color);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-light);
}

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

.data-table th {
    background-color: var(--light-bg-color);
    font-weight: 600;
    color: #4b5563;
    text-transform: uppercase;
    font-size: 0.85rem;
}

.data-table tr:hover {
    background-color: #f3f7fe;
}

/* Status Badges */
.status-badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
}

.status-active {
    background-color: rgba(16, 185, 129, 0.2);
    color: var(--success-color);
}

.status-inactive {
    background-color: rgba(239, 68, 68, 0.2);
    color: var(--error-color);
}

/* Small Buttons in Table */
.btn-sm {
    padding: 6px 10px;
    font-size: 0.8rem;
    border-radius: 6px;
    transition: opacity 0.3s;
}

.btn-sm:hover {
    opacity: 0.8;
}

.btn-danger {
    background-color: var(--error-color);
    color: white;
    border: none;
    cursor: pointer;
}

.btn-success {
    background-color: var(--success-color);
    color: white;
    border: none;
    cursor: pointer;
}

.btn { /* Định nghĩa lại btn cho HTML mới */
    padding: 10px 15px;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: background-color 0.3s;
}

.primary-btn {
    background-color: var(--primary-color);
    color: white;
}
.primary-btn:hover {
    background-color: #2563eb;
}
.secondary-btn {
    background-color: #6b7280;
    color: white;
}
.secondary-btn:hover {
    background-color: #4b5563;
}

/* ======================== */
/* 3. I/O Pane Styles */
/* ======================== */
.io-controls {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
}

.io-controls .btn {
    flex-grow: 1;
}

.io-result-box {
    background-color: var(--light-bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 15px;
}

#ioResultDisplay {
    background-color: #1f2937; /* Nền tối cho code/log */
    color: var(--success-color);
    padding: 10px;
    border-radius: 4px;
    overflow-x: auto;
    white-space: pre-wrap; /* Quan trọng để ngắt dòng */
    margin: 0;
    font-family: Consolas, monospace;
    font-size: 0.9rem;
    min-height: 100px;
}

/* ======================== */
/* Responsive Design */
/* ======================== */
@media (max-width: 992px) {
    .dashboard-layout {
        flex-direction: column;
        gap: 20px;
    }

    .sidebar {
        flex: 0 0 auto;
        width: 100%;
        position: static;
        padding: 0;
        box-shadow: var(--shadow-light);
    }
    
    .sidebar-brand {
        display: none; /* Ẩn brand trên mobile */
    }

    .sidebar-nav ul {
        display: flex;
        overflow-x: auto; /* Cuộn ngang các tab */
        border-radius: 8px;
        background-color: var(--card-bg-color);
    }

    .sidebar-nav-item {
        flex-shrink: 0; /* Ngăn các tab bị co lại */
    }

    .sidebar-nav-item a {
        padding: 12px 15px;
        border-left: none;
    }
    
    .sidebar-nav-item a.active {
        border-left: none;
        border-bottom: 3px solid var(--accent-color);
    }
    
    .stat-cards-grid {
        grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
        gap: 15px;
    }

    .stat-card .stat-value {
        font-size: 1.5rem;
    }
    
    .data-table-container {
        /* Đảm bảo bảng có thể cuộn ngang */
        width: 100%; 
    }
}