@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    --bg-dark: #0b0f19;
    --bg-card: rgba(20, 25, 40, 0.7);
    --bg-card-hover: rgba(30, 35, 55, 0.9);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    
    --accent-primary: #8b5cf6;
    --accent-primary-hover: #7c3aed;
    --accent-secondary: #06b6d4;
    
    --color-success: #10b981;
    --color-danger: #ef4444;
    --color-warning: #f59e0b;
    --color-info: #3b82f6;

    --border-color: rgba(255, 255, 255, 0.1);
    --glow-primary: 0 0 15px rgba(139, 92, 246, 0.4);
    --glow-success: 0 0 15px rgba(16, 185, 129, 0.4);
    --glow-danger: 0 0 15px rgba(239, 68, 68, 0.4);

    --radius-lg: 16px;
    --radius-md: 10px;
    --radius-sm: 6px;
    
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
    background-image: 
        radial-gradient(circle at 15% 50%, rgba(139, 92, 246, 0.05), transparent 25%),
        radial-gradient(circle at 85% 30%, rgba(6, 182, 212, 0.05), transparent 25%);
    min-height: 100vh;
}

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

.sidebar {
    width: 260px;
    background: var(--bg-card);
    border-right: 1px solid var(--border-color);
    padding: 2rem 1rem;
    display: flex;
    flex-direction: column;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    position: fixed;
    height: 100vh;
    z-index: 100;
}

.main-content {
    flex: 1;
    margin-left: 260px;
    padding: 2rem 3rem;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.main-content > * {
    width: 100%;
    max-width: 1000px;
}

/* Typography */
h1, h2, h3, h4 {
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-main);
}

h1 {
    font-size: 2rem;
    letter-spacing: -0.02em;
    background: linear-gradient(to right, var(--text-main), var(--text-muted));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

h2 { font-size: 1.5rem; }

/* Navigation */
.brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 2.5rem;
    padding-left: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.brand i {
    color: var(--accent-primary);
    text-shadow: var(--glow-primary);
}

.nav-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-muted);
    padding: 0.8rem 1rem;
    border-radius: var(--radius-md);
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.8rem;
    font-weight: 500;
}

.nav-links a:hover, .nav-links a.active {
    background: rgba(139, 92, 246, 0.1);
    color: var(--accent-primary);
    box-shadow: inset 3px 0 0 var(--accent-primary);
}

/* Cards */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: var(--transition);
}

.card:hover {
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1rem;
}

/* Grid Layouts */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }

/* Forms & Inputs */
.form-group {
    margin-bottom: 1.2rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

input[type="text"], 
input[type="number"], 
input[type="password"],
select, 
textarea {
    width: 100%;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 0.8rem 1rem;
    border-radius: var(--radius-md);
    font-family: 'Inter', sans-serif;
    transition: var(--transition);
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 2px rgba(139, 92, 246, 0.2);
}

/* Custom Toggle Switch */
.toggle-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.5rem 0;
}

.toggle-switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 26px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: rgba(255, 255, 255, 0.1);
    transition: .4s;
    border-radius: 34px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 4px;
    bottom: 4px;
    background-color: var(--text-muted);
    transition: .4s;
    border-radius: 50%;
}

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

input:checked + .slider:before {
    transform: translateX(24px);
    background-color: white;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-family: 'Inter', sans-serif;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: white;
}

.btn-primary:hover {
    box-shadow: var(--glow-primary);
    transform: translateY(-2px);
}

.btn-success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--color-success);
    border: 1px solid var(--color-success);
}
.btn-success:hover {
    background: var(--color-success);
    color: #fff;
    box-shadow: var(--glow-success);
}

.btn-danger {
    background: rgba(239, 68, 68, 0.1);
    color: var(--color-danger);
    border: 1px solid var(--color-danger);
}
.btn-danger:hover {
    background: var(--color-danger);
    color: #fff;
    box-shadow: var(--glow-danger);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-main);
}
.btn-outline:hover {
    background: rgba(255,255,255,0.05);
}

.btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.85rem;
}

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

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

tr:hover td {
    background: rgba(255,255,255,0.02);
}

/* Badges */
.badge {
    padding: 0.3rem 0.6rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}
.badge-long { background: rgba(16, 185, 129, 0.2); color: var(--color-success); }
.badge-short { background: rgba(239, 68, 68, 0.2); color: var(--color-danger); }
.badge-neutral { background: rgba(255, 255, 255, 0.1); color: var(--text-muted); }

/* Utility */
.text-success { color: var(--color-success); }
.text-danger { color: var(--color-danger); }
.text-warning { color: var(--color-warning); }
.text-muted { color: var(--text-muted); }

.flex-between { display: flex; justify-content: space-between; align-items: center; }
.flex-center { display: flex; justify-content: center; align-items: center; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 1rem; }
.gap-4 { gap: 1.5rem; }

/* Alerts / Flash Messages */
.alert {
    padding: 1rem;
    border-radius: var(--radius-md);
    margin-bottom: 1.5rem;
    border-left: 4px solid;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.alert-success { background: rgba(16, 185, 129, 0.1); border-color: var(--color-success); color: var(--color-success); }
.alert-error { background: rgba(239, 68, 68, 0.1); border-color: var(--color-danger); color: var(--color-danger); }

/* Logs Terminal */
.terminal {
    background: #000;
    color: #0f0;
    font-family: 'Courier New', Courier, monospace;
    padding: 1rem;
    border-radius: var(--radius-md);
    height: 500px;
    overflow-y: auto;
    font-size: 0.9rem;
    border: 1px solid #333;
}

/* Responsive */
@media (max-width: 992px) {
    .grid-4, .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); }
    .main-content { margin-left: 0; padding: 1rem; }
    .grid-2, .grid-4, .grid-3 { grid-template-columns: 1fr; }
}