/* --- 1. Global Styles & Variables --- */
:root {
    --color-bg-primary: #121212; /* Dark Background */
    --color-bg-secondary: #1E1E1E; /* Card/Panel Background */
    --color-text-primary: #E0E0E0; /* Light Text */
    --color-text-secondary: #A0A0A0; /* Muted Text */
    --color-accent: #007ACC; /* Modern Blue Accent */
    --color-success: #4CAF50;
    --color-warning: #FFC107;
    --color-danger: #F44336;
    --border-radius: 8px;
    --transition-speed: 0.3s;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    display: flex;
    min-height: 100vh;
    overflow-x: hidden;
}

/* --- 2. Layout Structure --- */
.sidebar {
    width: 250px;
    background-color: var(--color-bg-secondary);
    padding: 25px 15px;
    display: flex;
    flex-direction: column;
    border-right: 1px solid #2a2a2a;
    flex-shrink: 0;
    transition: width var(--transition-speed);
}

.dashboard-container {
    flex-grow: 1;
    padding: 30px;
    display: flex;
    flex-direction: column;
}

/* --- 3. Sidebar & Navigation --- */
.logo {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--color-accent);
    margin-bottom: 40px;
    padding-left: 10px;
}

.nav-main {
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex-grow: 1;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: 12px 15px;
    color: var(--color-text-secondary);
    text-decoration: none;
    border-radius: var(--border-radius);
    transition: background-color var(--transition-speed), color var(--transition-speed);
    font-weight: 500;
}

.nav-item .icon {
    margin-right: 12px;
    font-size: 1.2rem;
}

.nav-item:hover {
    background-color: #2a2a2a;
    color: var(--color-text-primary);
}

.nav-item.active {
    background-color: var(--color-accent);
    color: white;
}

.nav-item.active:hover {
    background-color: #005fa3;
}

.user-profile {
    display: flex;
    align-items: center;
    padding: 15px 10px;
    border-top: 1px solid #2a2a2a;
    margin-top: 20px;
}

.avatar {
    width: 40px;
    height: 40px;
    background-color: var(--color-accent);
    border-radius: 50%;
    display: grid; 
    place-content: center;
    font-weight: bold;
    margin-right: 10px;
}

.user-info {
    display: flex;
    flex-direction: column;
    font-size: 0.9rem;
}

.status {
    color: var(--color-success);
    font-size: 0.75rem;
}

/* --- 4. Header & Content --- */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.dashboard-title {
    font-size: 2rem;
    font-weight: 600;
}

.header-actions .btn-primary {
    box-shadow: 0 4px 15px rgba(0, 122, 204, 0.4);
}

.section {
    background-color: var(--color-bg-secondary);
    padding: 25px;
    border-radius: var(--border-radius);
    margin-bottom: 25px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.section h2 {
    font-size: 1.4rem;
    margin-bottom: 20px;
    color: var(--color-text-primary);
    border-bottom: 1px solid #2a2a2a;
    padding-bottom: 10px;
}

/* --- 5. Buttons & Inputs --- */
button, .btn-primary, .btn-secondary {
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.2s ease;
}

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

.btn-primary:hover {
    background-color: #005fa3;
    transform: translateY(-1px);
}

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

.btn-secondary:hover {
    background-color: #2a2a2a;
}

.btn-small {
    padding: 5px 10px;
    font-size: 0.8rem;
    background: #333;
    color: var(--color-text-secondary);
    border: 1px solid #444;
}
.btn-small:hover { background: var(--color-accent); color: white; }

.icon-only { padding: 5px 8px; }

input[type="text"], input[type="number"], select, textarea {
    width: 100%;
    padding: 10px;
    background-color: #2a2a2a;
    border: 1px solid #3d3d3d;
    border-radius: var(--border-radius);
    color: var(--color-text-primary);
    font-family: 'Inter', sans-serif;
    transition: border-color 0.2s;
}

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

/* --- 6. Dashboard Specific Components --- */

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

.stat-card {
    background-color: var(--color-bg-secondary);
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    border-left: 4px solid var(--color-accent);
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

.stat-card .stat-icon {
    font-size: 2rem;
    margin-bottom: 10px;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-bottom: 5px;
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
}

/* Tables */
.table-responsive {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.data-table th,
.data-table td {
    padding: 12px 15px;
    border-bottom: 1px solid #2a2a2a;
}

.data-table thead th {
    background-color: #252525;
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    font-size: 0.8rem;
}

.data-table tbody tr:hover {
    background-color: #252525;
    cursor: pointer;
}

.status-pill {
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

.status-pill.active { background-color: rgba(0, 122, 204, 0.2); color: var(--color-accent); }
.status-pill.warning { background-color: rgba(255, 193, 7, 0.2); color: var(--color-warning); }

.text-link {
    color: var(--color-accent);
    text-decoration: none;
    font-weight: 500;
}
.text-link:hover { text-decoration: underline; }

/* Utilization Grid */
.util-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.metric-card {
    padding: 15px;
    border: 1px solid #2a2a2a;
    border-radius: var(--border-radius);
}

.metric-card h3 {
    font-size: 1rem;
    margin-bottom: 10px;
    font-weight: 500;
}

.progress-bar-container {
    background-color: #2a2a2a;
    height: 8px;
    border-radius: 4px;
    margin-bottom: 8px;
}

.progress-bar {
    height: 100%;
    border-radius: 4px;
    transition: width 0.5s ease;
}

.cpu-load { background-color: #F44336; }
.memory-usage { background-color: #FFC107; }
.storage-io { background-color: var(--color-accent); }

.metric-value {
    font-size: 1.2rem;
    font-weight: 600;
    text-align: right;
}

/* --- 7. Query Editor Specific Styles (queries.html) --- */
#sqlEditor {
    height: 250px;
    font-family: monospace;
    font-size: 14px;
    line-height: 1.5;
    resize: vertical;
    border: 1px solid #3d3d3d;
}

.editor-footer {
    display: flex;
    justify-content: flex-end;
    padding: 8px 0;
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

.query-results-area h2 {
    margin-top: 20px;
}

.loading-text {
    text-align: center !important;
    color: var(--color-accent) !important;
    font-style: italic;
}

/* --- 8. Settings Page Specific Styles (settings.html) --- */
.settings-area {
    max-width: 900px;
}

.setting-group {
    margin-bottom: 30px;
    padding: 20px;
    border: 1px solid #2a2a2a;
    border-radius: var(--border-radius);
}

.setting-group h2 {
    border-bottom: none;
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.setting-item {
    display: flex;
    align-items: center;
    padding: 15px 0;
    border-bottom: 1px solid #2a2a2a;
}

.setting-item:last-child { border-bottom: none; }

.setting-item label {
    flex: 1;
    font-weight: 500;
}

.setting-item input[type="text"], 
.setting-item input[type="number"], 
.setting-item select {
    flex: 1;
    max-width: 300px;
}

.toggle-switch {
    justify-content: space-between;
}

.toggle-switch label {
    flex: 1;
}

/* Toggle Switch Styling (Modern Look) */
.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: relative;
    cursor: pointer;
    width: 45px;
    height: 25px;
    background-color: #ccc;
    transition: 0.4s;
    flex-shrink: 0;
}

.slider.round {
    border-radius: 25px;
}

.slider.round:before {
    position: absolute;
    content: "";
    height: 19px;
    width: 19px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: 0.4s;
}

input:checked + .slider {
    background-color: var(--color-accent);
}

input:focus + .slider {
    box-shadow: 0 0 1px var(--color-accent);
}

input:checked + .slider:before {
    transform: translateX(20px);
}

/* --- 9. Responsiveness (Mobile Adjustments) --- */
@media (max-width: 1200px) {
    .util-grid { grid-template-columns: 1fr 1fr; }
    .metric-card:nth-child(3) { grid-column: 1 / span 2; }
}

@media (max-width: 1024px) {
    body {
        flex-direction: column;
    }
    .sidebar {
        width: 100%;
        height: auto;
        padding: 15px;
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
    .logo { margin-bottom: 0; }
    .nav-main {
        flex-direction: row;
        gap: 5px;
        flex-grow: unset;
        justify-content: center;
    }
    .nav-item {
        padding: 8px 10px;
        font-size: 0.9rem;
    }
    .nav-item .icon { margin-right: 5px; }
    .user-profile { display: none; }

    .dashboard-container {
        padding: 20px 15px;
    }
    .dashboard-title { font-size: 1.5rem; }
    .header { flex-direction: column; align-items: flex-start; }
    .header-actions { margin-top: 15px; }

    .section h2 { font-size: 1.2rem; }

    .util-grid { grid-template-columns: 1fr; }
    .metric-card:nth-child(3) { grid-column: auto; }

    /* Settings adjustments */
    .setting-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    .setting-item label {
        width: 100%;
    }
    .setting-item input[type="text"], 
    .setting-item input[type="number"], 
    .setting-item select {
        width: 100%;
        max-width: 100%;
    }
    .toggle-switch {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
    .toggle-switch label { flex: unset; }
}

/* --- 10. Animations --- */

/* Fade In Up on Scroll (Triggered by JS) */
.fade-in-up {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Row animation for tables */
.table-row-animated {
    opacity: 0;
    transform: scale(0.98);
    animation: rowFadeIn 0.5s ease-out forwards;
}

@keyframes rowFadeIn {
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Specific delay application for staggered effect */
.stat-card[data-delay="0.1"] { animation-delay: 0.1s; }
.stat-card[data-delay="0.2"] { animation-delay: 0.2s; }
.stat-card[data-delay="0.3"] { animation-delay: 0.3s; }
.stat-card[data-delay="0.4"] { animation-delay: 0.4s; }
.stat-card[data-delay="0.5"] { animation-delay: 0.5s; }
.stat-card[data-delay="0.6"] { animation-delay: 0.6s; }

/* Apply stagger to table rows dynamically via JS for better control */