/* Core variables & styling tokens */
:root {
    --bg-primary: #0a0e17;
    --bg-secondary: #121824;
    --bg-tertiary: #1b2336;
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --accent-color: #3b82f6;
    --accent-hover: #2563eb;
    
    --success: #10b981;
    --success-bg: rgba(16, 185, 129, 0.1);
    --danger: #ef4444;
    --danger-bg: rgba(239, 68, 68, 0.1);
    --warning: #f59e0b;
    --warning-bg: rgba(245, 158, 11, 0.1);
    --info: #06b6d4;
    --info-bg: rgba(6, 182, 212, 0.1);

    --border-color: #2e3b52;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', "Courier New", Courier, monospace;
}

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

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.5;
    overflow-x: hidden;
}

.mono {
    font-family: var(--font-mono);
}

.hidden {
    display: none !important;
}

/* Authentication Overlay UI */
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(6, 9, 15, 0.95);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.login-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 2.5rem;
    border-radius: 8px;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.5);
}

.login-card h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
    text-align: center;
}

.login-card .subtitle {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--text-secondary);
}

.form-group {
    margin-bottom: 1.25rem;
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.form-group input, .form-group select {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.75rem;
    border-radius: 4px;
    font-size: 0.95rem;
    outline: none;
    transition: border-color 0.2s;
}

.form-group input:focus, .form-group select:focus {
    border-color: var(--accent-color);
}

.btn-primary {
    background-color: var(--accent-color);
    color: white;
    border: none;
    padding: 0.75rem;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 4px;
    cursor: pointer;
    width: 100%;
    transition: background-color 0.2s;
}

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

.btn-secondary {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s, border-color 0.2s;
}

.btn-secondary:hover {
    background-color: var(--border-color);
}

.error-msg {
    background-color: var(--danger-bg);
    color: #fca5a5;
    border: 1px solid var(--danger);
    padding: 0.75rem;
    border-radius: 4px;
    font-size: 0.875rem;
    margin-bottom: 1.25rem;
    display: none;
}

/* Main Dashboard UI */
#app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

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

header h1 {
    font-size: 1.25rem;
    font-weight: 700;
}

.subtitle {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

main {
    flex: 1;
    padding: 2rem;
    max-width: 1600px;
    width: 100%;
    margin: 0 auto;
}

/* Metrics Dashboard Cards */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.metric-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 1.25rem;
}

.metric-card h3 {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.metric-card .value {
    font-size: 1.8rem;
    font-weight: 700;
    line-height: 1.2;
}

.metric-card .value.connected {
    color: var(--success);
}

.metric-card .value.disconnected {
    color: var(--danger);
}

.metric-card .value.unknown {
    color: var(--warning);
}

.metric-card .detail-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

.metric-card .sub-details {
    display: flex;
    gap: 1rem;
    margin-top: 0.5rem;
    font-size: 0.875rem;
}

/* Tab Navigation UI */
.tabs-bar {
    display: flex;
    gap: 0.5rem;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 1.5rem;
}

.tab-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    padding: 0.75rem 1.25rem;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: color 0.2s, border-bottom-color 0.2s;
}

.tab-btn:hover {
    color: var(--text-primary);
}

.tab-btn.active {
    color: var(--accent-color);
    border-bottom-color: var(--accent-color);
}

.tab-content {
    animation: fadeIn 0.2s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.section-header h2 {
    font-size: 1.1rem;
    font-weight: 600;
}

.stream-control {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Status Indicators */
.status-indicator {
    display: inline-flex;
    align-items: center;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    padding: 0.25rem 0.6rem;
    border-radius: 3px;
    text-transform: uppercase;
}

.status-indicator::before {
    content: "";
    display: inline-block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    margin-right: 6px;
}

.status-indicator.online {
    background-color: var(--success-bg);
    color: var(--success);
}
.status-indicator.online::before {
    background-color: var(--success);
}

.status-indicator.offline {
    background-color: var(--danger-bg);
    color: var(--danger);
}
.status-indicator.offline::before {
    background-color: var(--danger);
}

.status-indicator.unknown {
    background-color: var(--warning-bg);
    color: var(--warning);
}
.status-indicator.unknown::before {
    background-color: var(--warning);
}

/* Table Design */
.table-container {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    overflow: hidden;
    margin-bottom: 1rem;
}

table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.9rem;
}

th, td {
    padding: 0.85rem 1rem;
    border-bottom: 1px solid var(--border-color);
}

th {
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
}

tbody tr {
    cursor: pointer;
    transition: background-color 0.15s;
}

tbody tr:hover {
    background-color: var(--bg-tertiary);
}

.empty-state {
    text-align: center;
    color: var(--text-muted);
    padding: 3rem;
}

.payload-preview {
    font-family: var(--font-mono);
    color: var(--text-secondary);
    font-size: 0.85rem;
    max-width: 400px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Status Badges */
.status-badge {
    display: inline-block;
    padding: 0.15rem 0.5rem;
    border-radius: 3px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
}

.status-badge.processed {
    background-color: var(--success-bg);
    color: var(--success);
}
.status-badge.failed {
    background-color: var(--danger-bg);
    color: var(--danger);
}
.status-badge.pending {
    background-color: var(--warning-bg);
    color: var(--warning);
}
.status-badge.processing {
    background-color: var(--info-bg);
    color: var(--info);
}

/* Drawer UI */
.drawer {
    position: fixed;
    top: 0;
    right: -480px;
    width: 100%;
    max-width: 480px;
    height: 100vh;
    background-color: var(--bg-secondary);
    border-left: 1px solid var(--border-color);
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.5);
    z-index: 900;
    display: flex;
    flex-direction: column;
    transition: right 0.3s ease-in-out;
}

.drawer.open {
    right: 0;
}

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

.drawer-header h3 {
    font-size: 1.1rem;
    font-weight: 700;
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.8rem;
    cursor: pointer;
    line-height: 1;
}

.close-btn:hover {
    color: var(--text-primary);
}

.drawer-body {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem;
}

.detail-table {
    width: 100%;
    margin-bottom: 1.5rem;
}

.detail-table th, .detail-table td {
    padding: 0.6rem 0.5rem;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.85rem;
}

.detail-table th {
    background: none;
    text-transform: none;
    font-weight: 500;
    width: 120px;
    color: var(--text-secondary);
}

.payload-section {
    margin-top: 1.5rem;
}

.payload-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.payload-header h4 {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.payload-code {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    padding: 1rem;
    border-radius: 4px;
    font-size: 0.8rem;
    overflow-x: auto;
    white-space: pre-wrap;
    word-break: break-all;
    max-height: 300px;
}

/* Filters and Layout adjustments */
.filters-container {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 1.25rem;
    margin-bottom: 1.5rem;
}

.filters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
    align-items: flex-end;
}

.filters-grid .button-group {
    display: flex;
    gap: 0.5rem;
}

.filters-grid .form-group {
    margin-bottom: 0;
}

.pagination-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1rem;
}

.pagination-bar button {
    min-width: 100px;
}

#page-indicator {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.btn-tiny {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.7rem;
    padding: 0.15rem 0.4rem;
    border-radius: 3px;
    cursor: pointer;
    margin-left: 0.5rem;
}

.btn-tiny:hover {
    color: var(--text-primary);
    border-color: var(--text-muted);
}