:root {
    --bg-main: #0b0f19;
    --bg-card: #111827;
    --bg-card-hover: #1f2937;
    --border-color: rgba(255, 255, 255, 0.08);
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --purple: #8b5cf6;
    --text-main: #f3f4f6;
    --text-muted: #9ca3af;
    --radius: 10px;
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-main);
    color: var(--text-main);
    display: flex;
    height: 100vh;
    overflow: hidden;
}

.app-container {
    display: flex;
    width: 100vw;
    height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background-color: var(--bg-card);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}

.brand {
    padding: 24px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid var(--border-color);
}

.logo-icon {
    font-size: 28px;
    color: var(--primary);
}

.brand-text h2 {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.brand-text span {
    font-size: 11px;
    color: var(--primary);
    font-weight: 600;
    letter-spacing: 1px;
}

.nav-menu {
    padding: 16px 12px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    flex: 1;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    border-radius: var(--radius);
    transition: all 0.2s ease;
}

.nav-item:hover {
    background-color: var(--bg-card-hover);
    color: var(--text-main);
}

.nav-item.active {
    background-color: rgba(59, 130, 246, 0.15);
    color: var(--primary);
    font-weight: 600;
}

.sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
}

.ws-status {
    display: flex;
    align-items: center;
    gap: 8px;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--danger);
}

.status-dot.connected {
    background-color: var(--success);
    box-shadow: 0 0 8px var(--success);
}

.version-tag {
    color: var(--text-muted);
    font-family: monospace;
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    padding: 24px 32px;
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.topbar-title h1 {
    font-size: 24px;
    font-weight: 700;
}

.subtitle {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 4px;
}

.topbar-actions {
    display: flex;
    gap: 12px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    font-size: 13px;
    font-weight: 600;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-primary {
    background-color: var(--primary);
    color: #fff;
}
.btn-primary:hover { background-color: var(--primary-hover); }

.btn-secondary {
    background-color: var(--bg-card-hover);
    color: var(--text-main);
    border: 1px solid var(--border-color);
}
.btn-secondary:hover { background-color: rgba(255, 255, 255, 0.1); }

.btn-success { background-color: var(--success); color: #fff; }
.btn-success:hover { filter: brightness(1.1); }

.btn-danger { background-color: var(--danger); color: #fff; }
.btn-sm { padding: 6px 12px; font-size: 12px; }
.btn-lg { padding: 14px 24px; font-size: 15px; }
.btn-block { width: 100%; justify-content: center; }

/* Metrics Grid */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.metric-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.metric-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.metric-icon.blue { background-color: rgba(59, 130, 246, 0.15); color: var(--primary); }
.metric-icon.green { background-color: rgba(16, 185, 129, 0.15); color: var(--success); }
.metric-icon.amber { background-color: rgba(245, 158, 11, 0.15); color: var(--warning); }
.metric-icon.purple { background-color: rgba(139, 92, 246, 0.15); color: var(--purple); }

.metric-label {
    font-size: 12px;
    color: var(--text-muted);
}

.metric-data h3 {
    font-size: 22px;
    font-weight: 700;
    margin-top: 4px;
}

/* Cards & Tables */
.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
}

.card-header {
    padding: 18px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header h2 {
    font-size: 16px;
    font-weight: 600;
}

.card-body {
    padding: 24px;
}

.search-input {
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 8px 14px;
    border-radius: var(--radius);
    font-size: 13px;
    width: 300px;
}

.table-responsive {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 13px;
}

.data-table th {
    background-color: rgba(0, 0, 0, 0.2);
    padding: 14px 20px;
    color: var(--text-muted);
    font-weight: 600;
    border-bottom: 1px solid var(--border-color);
}

.data-table td {
    padding: 14px 20px;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

.data-table tr:hover td {
    background-color: var(--bg-card-hover);
}

/* Badges */
.badge {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-active { background-color: rgba(16, 185, 129, 0.2); color: var(--success); }
.badge-pending { background-color: rgba(245, 158, 11, 0.2); color: var(--warning); }
.badge-expired { background-color: rgba(239, 68, 68, 0.2); color: var(--danger); }
.badge-module { background-color: rgba(59, 130, 246, 0.15); color: var(--primary); font-size: 10px; margin: 2px; }

/* Tabs */
.tab-pane {
    display: none;
}
.tab-pane.active {
    display: block;
}

/* CareChat Layout */
.chat-layout {
    display: flex;
    height: 600px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
}

.chat-sidebar {
    width: 300px;
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.chat-sidebar-header {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
}

.chat-client-list {
    flex: 1;
    overflow-y: auto;
}

.chat-client-item {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
    transition: all 0.2s;
}

.chat-client-item:hover, .chat-client-item.active {
    background-color: var(--bg-card-hover);
}

.chat-main {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.chat-main-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
}

.chat-messages {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.chat-msg {
    max-width: 70%;
    padding: 12px 16px;
    border-radius: 12px;
    font-size: 13px;
    line-height: 1.5;
}

.chat-msg.client {
    align-self: flex-start;
    background-color: var(--bg-card-hover);
}

.chat-msg.admin {
    align-self: flex-end;
    background-color: var(--primary);
    color: #fff;
}

.chat-msg.system {
    align-self: center;
    background-color: rgba(245, 158, 11, 0.15);
    color: var(--warning);
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.chat-input-box {
    padding: 16px;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 10px;
}

.chat-input-box input {
    flex: 1;
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 10px 16px;
    border-radius: var(--radius);
    font-size: 13px;
}

/* Modals */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: rgba(0, 0, 0, 0.7);
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-overlay.active { display: flex; }

.modal-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    width: 600px;
    max-width: 90vw;
    padding: 24px;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 24px;
    cursor: pointer;
}

.license-textarea {
    width: 100%;
    height: 160px;
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    color: #38bdf8;
    font-family: monospace;
    font-size: 12px;
    padding: 12px;
    border-radius: var(--radius);
    margin: 12px 0 20px 0;
    resize: none;
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-control {
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 10px 14px;
    border-radius: var(--radius);
    font-size: 13px;
}

.release-results {
    margin-top: 20px;
    padding: 16px;
    background-color: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--success);
    border-radius: var(--radius);
}

.hidden { display: none; }