:root {
    --bg-dark: #0f111a;
    --card-bg: rgba(255, 255, 255, 0.03);
    --accent: #00e5ff;
    --accent-glow: rgba(0, 229, 255, 0.3);
    --text-main: #e0e0e0;
    --text-muted: #8888b0;
    --success: #00ff88;
    --danger: #ff4d4d;
    --warning: #ffcc00;
    --border: rgba(255, 255, 255, 0.1);
    --font-main: 'Inter', system-ui, -apple-system, sans-serif;
}

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

body {
    background: radial-gradient(circle at top right, #1a1d2e, var(--bg-dark));
    color: var(--text-main);
    font-family: var(--font-main);
    min-height: 100vh;
}

/* Glassmorphism Classes */
.glass {
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 20px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.4);
}

.card:hover {
    border-color: rgba(0, 229, 255, 0.2);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6);
    transform: translateY(-2px);
    transition: all 0.3s ease;
}

/* Specific Accent Text */
.stat-value {
    background: linear-gradient(135deg, #fff 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    font-size: 2.2rem;
}

/* Layout */
#app-shell {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

header {
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border);
}

.nav-tabs {
    display: flex;
    gap: 1rem;
    padding: 1rem 2rem;
    background: rgba(0,0,0,0.2);
}

.tab-btn {
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-muted);
    cursor: pointer;
    transition: 0.2s ease;
    font-weight: 500;
}

.tab-btn.active {
    background: var(--card-bg);
    border-color: var(--accent);
    color: var(--accent);
    box-shadow: 0 0 15px var(--accent-glow);
}

.tab-content {
    flex: 1;
    padding: 2rem;
    overflow-y: auto;
    display: none;
    opacity: 0;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.3s forwards;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(5px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Skeleton Loaders */
.skeleton {
    background: linear-gradient(90deg, var(--card-bg) 25%, rgba(255,255,255,0.05) 50%, var(--card-bg) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: 4px;
    height: 1rem;
    width: 100%;
}

@keyframes skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Components */
.card {
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    min-height: 80px;
    contain: layout;
}

.title-accent {
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 0.8rem;
    color: var(--accent);
    margin-bottom: 0.5rem;
}

.status-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.stat-item {
    padding: 1.2rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    height: 100px;
}

.stat-value {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 0.2rem;
}

.stat-label {
    color: var(--text-muted);
    font-size: 0.9rem;
}

button.primary {
    background: var(--accent);
    color: #000;
    border: none;
    padding: 0.8rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: 0.2s;
}

button.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px var(--accent-glow);
}

button.primary.active {
    background: var(--success);
    color: #000;
    box-shadow: 0 0 15px var(--success-glow);
}

button.secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-muted);
    border: 1px solid var(--border);
    padding: 0.8rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: 0.2s;
}

button.secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-main);
    border-color: rgba(255, 255, 255, 0.2);
}

button.danger {
    background: rgba(255, 77, 77, 0.15);
    color: var(--danger);
    border: 1px solid rgba(255, 77, 77, 0.3);
    padding: 0.8rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: 0.2s;
}

button.danger:hover {
    background: var(--danger);
    color: #fff;
    box-shadow: 0 5px 15px rgba(255, 77, 77, 0.4);
}

button.warning {
    background: rgba(255, 204, 0, 0.15);
    color: var(--warning);
    border: 1px solid rgba(255, 204, 0, 0.3);
    padding: 0.8rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: 0.2s;
}

button.warning:hover {
    background: var(--warning);
    color: #000;
    box-shadow: 0 5px 15px rgba(255, 204, 0, 0.4);
}

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

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

.form-label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.form-input {
    width: 100%;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.8rem;
    color: var(--text-main);
    font-family: inherit;
    font-size: 0.95rem;
    outline: none;
    transition: 0.2s;
}

.form-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 10px var(--accent-glow);
}

.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

/* Accordion/Collapsible */
.accordion {
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 1rem;
}

.accordion-header {
    padding: 1rem 1.5rem;
    background: rgba(255,255,255,0.02);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.2s;
}

.accordion-header:hover {
    background: rgba(255,255,255,0.05);
}

.accordion-content {
    padding: 1.5rem;
    border-top: 1px solid var(--border);
    display: none;
}

.accordion.active .accordion-content {
    display: block;
}

/* Badges */
.badge {
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
}

.badge-success { background: rgba(0, 255, 136, 0.1); color: var(--success); border: 1px solid var(--success); }
.badge-danger { background: rgba(255, 77, 77, 0.1); color: var(--danger); border: 1px solid var(--danger); }

/* Custom Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: #333; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #444; }