:root {
    --bg-dark: #0f172a;
    --bg-card: rgba(30, 41, 59, 0.7);
    --border-color: rgba(255, 255, 255, 0.1);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-primary: #6366f1; /* Indigo */
    --accent-hover: #4f46e5;
    --success: #10b981;
    --danger: #ef4444;
    --glass-blur: 12px;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-dark);
    background-image: 
        radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.15) 0px, transparent 50%),
        radial-gradient(at 100% 0%, rgba(16, 185, 129, 0.1) 0px, transparent 50%);
    color: var(--text-primary);
    height: 100vh;
    overflow: hidden;
}

/* Glassmorphism */
.glass {
    background: var(--bg-card);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

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

/* Sidebar */
.sidebar {
    width: 280px;
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--border-color);
    padding: 24px;
    z-index: 10;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 32px;
    color: var(--text-primary);
}

.brand-icon {
    color: var(--accent-primary);
}

.nav-menu {
    flex: 1;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    color: var(--text-secondary);
}

.nav-item.active, .nav-item:hover {
    background: rgba(99, 102, 241, 0.1);
    color: var(--accent-primary);
}

/* Status Indicator */
.connection-status {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px;
    background: rgba(0,0,0,0.2);
    border-radius: 8px;
    margin-bottom: 24px;
    font-size: 0.875rem;
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--danger);
    box-shadow: 0 0 10px var(--danger);
    transition: all 0.3s;
}

.connected .status-indicator {
    background-color: var(--success);
    box-shadow: 0 0 10px var(--success);
}

/* Active Users */
.active-users-panel h3 {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    margin-bottom: 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.badge {
    background: var(--accent-primary);
    color: white;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.7rem;
}

.user-list {
    list-style: none;
    overflow-y: auto;
    max-height: 300px;
}

.user-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    font-size: 0.9rem;
    color: var(--text-primary);
}

.user-avatar {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-primary), #a855f7);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    font-weight: bold;
}

.empty-state {
    color: var(--text-secondary);
    font-style: italic;
    font-size: 0.85rem;
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
}

.top-bar {
    padding: 16px 32px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.config-bar {
    display: flex;
    gap: 16px;
    align-items: center;
    width: 100%;
}

/* Inputs & Buttons */
.input-group {
    position: relative;
    display: flex;
    align-items: center;
    background: rgba(0,0,0,0.2);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    padding: 0 12px;
    flex: 1;
}

.input-group i {
    color: var(--text-secondary);
    width: 16px;
    height: 16px;
}

.input-group input {
    background: transparent;
    border: none;
    color: var(--text-primary);
    padding: 10px 12px;
    width: 100%;
    outline: none;
    font-size: 0.9rem;
}

.btn {
    border: none;
    border-radius: 8px;
    padding: 10px 20px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    font-family: inherit;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--accent-primary);
    color: white;
}
.btn-primary:hover:not(:disabled) {
    background: var(--accent-hover);
}

.btn-danger {
    background: rgba(239, 68, 68, 0.2);
    color: var(--danger);
}
.btn-danger:hover:not(:disabled) {
    background: rgba(239, 68, 68, 0.3);
}

.btn-accent {
    background: linear-gradient(135deg, var(--accent-primary), #8b5cf6);
    color: white;
}
.btn-accent:hover:not(:disabled) {
    opacity: 0.9;
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}
.btn-ghost:hover {
    color: var(--text-primary);
    background: rgba(255,255,255,0.05);
}

.btn-sm {
    padding: 4px 8px;
    font-size: 0.8rem;
}

/* Content Area */
.content-area {
    padding: 32px;
    overflow-y: auto;
    flex: 1;
}

.grid-layout {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.full-width {
    grid-column: 1 / -1;
}

.card {
    border-radius: 16px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.card-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header h2 {
    font-size: 1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.card-body {
    padding: 20px;
}

/* Forms */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

input[type="text"], textarea, select {
    width: 100%;
    background: rgba(0,0,0,0.2);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 10px;
    color: var(--text-primary);
    font-family: 'Inter', monospace; /* Monospace for payloads */
    outline: none;
}
input[type="text"]:focus, textarea:focus, select:focus {
    border-color: var(--accent-primary);
}

select {
    appearance: none;
    background-image: url("data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%2394a3b8%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22%2F%3E%3C%2Fsvg%3E");
    background-repeat: no-repeat;
    background-position: right .7em top 50%;
    background-size: .65em auto;
}

/* Switch */
.switch {
    position: relative;
    display: inline-block;
    width: 40px;
    height: 24px;
}
.switch input { opacity: 0; width: 0; height: 0; }
.slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: #334155;
    transition: .4s;
    border-radius: 34px;
}
.slider:before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}
input:checked + .slider { background-color: var(--success); }
input:checked + .slider:before { transform: translateX(16px); }

/* Logs */
.log-container {
    height: 300px;
    overflow-y: auto;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.log-entry {
    padding: 8px 12px;
    border-radius: 6px;
    background: rgba(255,255,255,0.03);
    border-left: 3px solid var(--text-secondary);
    animation: fadeIn 0.3s ease;
}
.log-entry.in { border-color: var(--accent-primary); background: rgba(99, 102, 241, 0.1); }
.log-entry.out { border-color: var(--success); background: rgba(16, 185, 129, 0.1); }
.log-entry.error { border-color: var(--danger); background: rgba(239, 68, 68, 0.1); }
.log-entry.private { border-color: #f59e0b; background: rgba(245, 158, 11, 0.1); }

.log-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.log-payload {
    white-space: pre-wrap;
    word-break: break-all;
    color: var(--text-primary);
}

/* Tags */
.tag-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    background: rgba(255,255,255,0.1);
    border-radius: 20px;
    font-size: 0.8rem;
    margin: 4px;
}

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

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