/**
 * Site Manager Panel - Premium Modern UI (v2.0)
 * Design: Glassmorphism, Deep Space Dark Theme, Vivid Accents
 * Font: Outfit (UI), JetBrains Mono (Code)
 */

:root {
    /* Color Palette - Deep Space */
    --bg-primary: #030712;    /* Deepest black-blue */
    --bg-secondary: #0b1121;  /* Rich dark blue */
    --bg-card: rgba(17, 24, 39, 0.7); /* Glassy card */
    --bg-hover: rgba(31, 41, 55, 0.8);
    
    /* Text Colors */
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --text-accent: #38bdf8;

    /* Semantic Colors (Vivid Gradients) */
    --accent-start: #0ea5e9;
    --accent-end: #38bdf8;
    --accent-glow: rgba(14, 165, 233, 0.4);
    
    --success-start: #10b981;
    --success-end: #34d399;
    --success-glow: rgba(16, 185, 129, 0.4);
    
    --warning-start: #f59e0b;
    --warning-end: #fbbf24;
    --warning-glow: rgba(245, 158, 11, 0.4);
    
    --danger-start: #ef4444;
    --danger-end: #f87171;
    --danger-glow: rgba(239, 68, 68, 0.4);

    /* UI Elements */
    --border: rgba(148, 163, 184, 0.1);
    --border-hover: rgba(56, 189, 248, 0.3);
    --glass-border: 1px solid rgba(255, 255, 255, 0.05);
    
    /* Layout */
    --sidebar-width: 280px;
    --header-height: 70px;
    --radius: 16px;
    --radius-sm: 8px;
    
    /* Effects */
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
    --shadow-glow: 0 0 20px var(--accent-glow);
    --backdrop-blur: blur(12px);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base */
* { margin: 0; padding: 0; box-sizing: border-box; outline: none; }

body {
    font-family: 'Outfit', -apple-system, sans-serif;
    background-color: var(--bg-primary);
    background-image: 
        radial-gradient(circle at 15% 50%, rgba(14, 165, 233, 0.08) 0%, transparent 25%),
        radial-gradient(circle at 85% 30%, rgba(139, 92, 246, 0.08) 0%, transparent 25%);
    background-attachment: fixed;
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--text-accent); text-decoration: none; transition: var(--transition); }
a:hover { color: #7dd3fc; text-shadow: 0 0 10px rgba(56, 189, 248, 0.5); }

/* Layout Grid */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* Glassmorphic Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: rgba(11, 17, 33, 0.85);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    border-right: var(--glass-border);
    position: fixed;
    height: 100vh;
    z-index: 50;
    transition: transform 0.3s ease;
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    border-bottom: var(--glass-border);
}

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

.logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    box-shadow: 0 0 15px var(--accent-glow);
}

.brand-info h1 {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -0.02em;
    background: linear-gradient(to right, #fff, #94a3b8);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.brand-info .version {
    font-size: 11px;
    color: var(--text-muted);
    font-family: 'JetBrains Mono', monospace;
    background: rgba(255, 255, 255, 0.05);
    padding: 2px 6px;
    border-radius: 4px;
}

/* Navigation */
.sidebar-nav {
    flex: 1;
    padding: 24px 16px;
    overflow-y: auto;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    margin-bottom: 4px;
    transition: var(--transition);
    font-weight: 500;
    position: relative;
    overflow: hidden;
}

.nav-item:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    transform: translateX(4px);
}

.nav-item.active {
    background: linear-gradient(90deg, rgba(14, 165, 233, 0.1), transparent);
    color: var(--text-accent);
    border-left: 3px solid var(--accent-start);
}

.nav-item.active::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, var(--accent-glow), transparent);
    opacity: 0.1;
}

.nav-icon {
    font-size: 18px;
    width: 24px;
    text-align: center;
    filter: drop-shadow(0 0 5px rgba(255,255,255,0.1));
}

.nav-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border), transparent);
    margin: 20px 0;
}

.sidebar-footer {
    padding: 20px;
    border-top: var(--glass-border);
    background: rgba(0,0,0,0.2);
}

.user-info { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.user-avatar { 
    width: 32px; height: 32px; background: var(--bg-hover); 
    border-radius: 50%; display: flex; align-items: center; justify-content: center;
    border: 1px solid var(--border);
}
.user-name { font-weight: 600; font-size: 14px; color: var(--text-primary); }

.logout-btn {
    display: block;
    width: 100%;
    padding: 8px;
    text-align: center;
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger-end);
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 600;
    border: 1px solid rgba(239, 68, 68, 0.2);
    transition: var(--transition);
}
.logout-btn:hover {
    background: var(--danger-start);
    color: white;
    box-shadow: 0 0 15px var(--danger-glow);
}

/* Main Content Area */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
    z-index: 10;
}

.top-header {
    height: var(--header-height);
    background: rgba(3, 7, 18, 0.8);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    border-bottom: var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 32px;
    position: sticky;
    top: 0;
    z-index: 40;
}

.header-left { display: flex; align-items: center; gap: 16px; }

.page-title {
    font-size: 24px;
    font-weight: 700;
    background: linear-gradient(to right, #fff, #cbd5e1);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.server-ip {
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    padding: 6px 12px;
    border-radius: 20px;
    color: var(--text-accent);
    box-shadow: 0 0 10px rgba(14, 165, 233, 0.1);
}

.content { padding: 32px; max-width: 1600px; margin: 0 auto; width: 100%; }

/* Mobile Sidebar Toggle */
.mobile-toggle, .mobile-close {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 24px;
    cursor: pointer;
}

/* Card System */
.section {
    background: var(--bg-card);
    border: var(--glass-border);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.section::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
}

.section:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--border-hover);
}

.section h2 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-bottom: 32px;
}

.stat-card {
    background: linear-gradient(145deg, rgba(30, 41, 59, 0.6), rgba(15, 23, 42, 0.8));
    border: var(--glass-border);
    border-radius: var(--radius);
    padding: 24px;
    display: flex;
    gap: 20px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.stat-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-glow); }

.stat-icon {
    width: 56px; height: 56px;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.05);
    display: flex; align-items: center; justify-content: center;
    font-size: 28px;
    border: 1px solid rgba(255,255,255,0.1);
}

.stat-info { flex: 1; }
.stat-info h3 { font-size: 14px; color: var(--text-secondary); margin-bottom: 6px; font-weight: 500; }
.stat-value { font-size: 32px; font-weight: 700; color: #fff; line-height: 1.2; margin-bottom: 8px; }

.stat-bar { height: 6px; background: rgba(255,255,255,0.1); border-radius: 3px; overflow: hidden; }
.stat-bar-fill { height: 100%; border-radius: 3px; transition: width 1s ease-out; position: relative; }
.stat-bar-fill::after {
    content: ''; position: absolute; top:0; left:0; right:0; bottom:0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
}

/* Buttons */
.btn-primary {
    background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(14, 165, 233, 0.3);
    transition: var(--transition);
    display: inline-flex; align-items: center; gap: 8px;
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--accent-glow);
}

.btn-secondary {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 12px 24px;
    border-radius: var(--radius-sm);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}
.btn-secondary:hover {
    background: rgba(255,255,255,0.05);
    border-color: var(--text-secondary);
}

.btn-toggle {
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s;
}
.btn-toggle:hover { background: rgba(255,255,255,0.1); color: #fff; }

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
    border-radius: 6px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

/* Tables */
.table-container { 
    overflow-x: auto; 
    border-radius: var(--radius-sm); 
    border: var(--glass-border);
}

.data-table { width: 100%; border-collapse: collapse; }
.data-table th {
    background: rgba(0,0,0,0.3);
    padding: 16px;
    text-align: left;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    font-weight: 600;
    border-bottom: var(--glass-border);
}
.data-table td {
    padding: 16px;
    border-bottom: 1px solid rgba(255,255,255,0.03);
    color: var(--text-secondary);
    font-size: 14px;
}
.data-table tr:hover td { background: rgba(255,255,255,0.02); color: var(--text-primary); }
.data-table tr:last-child td { border-bottom: none; }

/* Status Badges */
.status-badge {
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    display: inline-flex; align-items: center; gap: 6px;
}
.status-badge.active {
    background: rgba(16, 185, 129, 0.1);
    color: #34d399;
    border: 1px solid rgba(16, 185, 129, 0.2);
    box-shadow: 0 0 10px rgba(16, 185, 129, 0.1);
}
.status-badge.inactive {
    background: rgba(239, 68, 68, 0.1);
    color: #f87171;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

/* Forms */
.form-group { margin-bottom: 24px; }
.form-group label { display: block; margin-bottom: 8px; font-weight: 500; color: var(--text-secondary); }
.form-control {
    width: 100%;
    padding: 14px 16px;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: #fff;
    font-family: inherit;
    transition: var(--transition);
}
.form-control:focus {
    border-color: var(--accent-start);
    background: rgba(0, 0, 0, 0.4);
    box-shadow: 0 0 0 4px rgba(14, 165, 233, 0.1);
}

/* Responsive */
@media (max-width: 1024px) {
    .sidebar { transform: translateX(-100%); width: 100%; max-width: 300px; box-shadow: 50px 0 100px rgba(0,0,0,0.5); }
    .sidebar.active { transform: translateX(0); }
    .main-content { margin-left: 0; }
    .mobile-toggle { display: block; }
    .mobile-close { display: block; }
    .top-header { padding: 0 20px; }
    .content { padding: 20px; }
}

@media (max-width: 768px) {
    .stats-grid { grid-template-columns: 1fr; }
    .header-actions { display: none; }
}

/* Terminal & Code */
.terminal {
    background: #0d1117;
    border: 1px solid #30363d;
    border-radius: var(--radius);
    font-family: 'JetBrains Mono', monospace;
}
.terminal-header { background: #161b22; padding: 12px 16px; border-bottom: 1px solid #30363d; }

/* File Manager */
.file-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 20px;
}
.file-item {
    background: rgba(255,255,255,0.03);
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    padding: 20px;
    text-align: center;
    transition: var(--transition);
}
.file-item:hover {
    background: rgba(255,255,255,0.05);
    border-color: var(--accent-start);
    transform: translateY(-4px);
}
.file-icon { font-size: 40px; margin-bottom: 12px; display: block; }

/* Custom Scrollbar */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: rgba(0,0,0,0.1); }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.2); }