/* ===================================================================
   MicroGateway -- API Gateway Dashboard
   Dark infrastructure theme with green terminal accents.
   =================================================================== */

/* -- Reset & Base ----------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    --color-bg-primary: #0a0e14;
    --color-bg-secondary: #11151c;
    --color-bg-tertiary: #1a1f2e;
    --color-bg-card: #141923;
    --color-bg-input: #0d1117;
    --color-bg-hover: #1e2535;

    --color-text-primary: #e0e6ed;
    --color-text-secondary: #8b949e;
    --color-text-muted: #5a6370;
    --color-text-bright: #f0f6fc;

    --color-accent: #00ff88;
    --color-accent-dim: #00cc6a;
    --color-accent-glow: rgba(0, 255, 136, 0.15);
    --color-accent-border: rgba(0, 255, 136, 0.3);

    --color-blue: #58a6ff;
    --color-blue-dim: #388bfd;
    --color-orange: #f0883e;
    --color-red: #f85149;
    --color-red-dim: #da3633;
    --color-yellow: #e3b341;
    --color-purple: #bc8cff;
    --color-cyan: #56d4dd;

    --color-success: #00ff88;
    --color-warning: #e3b341;
    --color-danger: #f85149;
    --color-info: #58a6ff;

    --color-border: #21262d;
    --color-border-light: #30363d;
    --color-border-accent: rgba(0, 255, 136, 0.2);

    --color-circuit-closed: #00ff88;
    --color-circuit-open: #f85149;
    --color-circuit-half: #e3b341;

    --sidebar-width: 250px;
    --radius: 6px;
    --radius-lg: 10px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.5);
    --shadow-glow: 0 0 20px rgba(0, 255, 136, 0.1);
    --transition: 0.2s ease;
}

html { font-size: 14px; }

body {
    font-family: var(--font-sans);
    background: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

a { color: var(--color-accent); text-decoration: none; }
a:hover { color: var(--color-accent-dim); }

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

/* -- Sidebar ---------------------------------------------------------- */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background: var(--color-bg-secondary);
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    z-index: 100;
    overflow-y: auto;
}

.sidebar-header {
    padding: 24px 20px 20px;
    border-bottom: 1px solid var(--color-border);
}

.logo {
    font-family: var(--font-mono);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-text-bright);
    letter-spacing: -0.5px;
}

.logo span {
    color: var(--color-accent);
    text-shadow: 0 0 10px rgba(0, 255, 136, 0.3);
}

.logo-tagline {
    font-size: 0.7rem;
    color: var(--color-text-muted);
    margin-top: 4px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.nav-menu {
    list-style: none;
    padding: 12px 0;
    flex: 1;
}

.nav-menu li { margin: 2px 8px; }

.nav-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    border-radius: var(--radius);
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: all var(--transition);
}

.nav-link:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.nav-link.active {
    background: var(--color-accent-glow);
    color: var(--color-accent);
    border: 1px solid var(--color-accent-border);
}

.nav-icon { font-size: 1.1rem; width: 22px; text-align: center; }

.sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--color-border);
}

.gateway-status {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    font-family: var(--font-mono);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
}

.status-dot.healthy { background: var(--color-success); box-shadow: 0 0 6px var(--color-success); }
.status-dot.unhealthy { background: var(--color-danger); box-shadow: 0 0 6px var(--color-danger); }

/* -- Main Content ----------------------------------------------------- */
.main-content {
    margin-left: var(--sidebar-width);
    flex: 1;
    padding: 30px;
    min-height: 100vh;
}

.view-container { max-width: 1400px; margin: 0 auto; }

/* -- Page Headers ----------------------------------------------------- */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 28px;
    flex-wrap: wrap;
    gap: 16px;
}

.page-header h2 {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-bright);
}

.page-header h2 span { color: var(--color-accent); }

.page-subtitle {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-top: 4px;
}

/* -- Cards ------------------------------------------------------------ */
.card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 20px;
    margin-bottom: 20px;
    transition: border-color var(--transition);
}

.card:hover { border-color: var(--color-border-light); }

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--color-border);
}

.card-title {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* -- Metric Cards ----------------------------------------------------- */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.metric-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 18px 20px;
    position: relative;
    overflow: hidden;
}

.metric-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--color-accent);
    opacity: 0.6;
}

.metric-card.blue::before { background: var(--color-blue); }
.metric-card.orange::before { background: var(--color-orange); }
.metric-card.red::before { background: var(--color-red); }
.metric-card.purple::before { background: var(--color-purple); }
.metric-card.cyan::before { background: var(--color-cyan); }

.metric-label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
    font-family: var(--font-mono);
}

.metric-value {
    font-family: var(--font-mono);
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--color-text-bright);
}

.metric-value.green { color: var(--color-accent); }
.metric-value.red { color: var(--color-danger); }
.metric-value.blue { color: var(--color-blue); }
.metric-value.orange { color: var(--color-orange); }

.metric-detail {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-top: 4px;
    font-family: var(--font-mono);
}

/* -- Tables ----------------------------------------------------------- */
.table-container {
    overflow-x: auto;
    border-radius: var(--radius);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

thead th {
    background: var(--color-bg-tertiary);
    color: var(--color-text-secondary);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 10px 14px;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
    white-space: nowrap;
}

tbody td {
    padding: 10px 14px;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text-primary);
    vertical-align: middle;
}

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

tbody tr:last-child td { border-bottom: none; }

/* -- Badges / Pills --------------------------------------------------- */
.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.7rem;
    font-weight: 600;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.badge-success { background: rgba(0,255,136,0.15); color: var(--color-success); border: 1px solid rgba(0,255,136,0.3); }
.badge-danger { background: rgba(248,81,73,0.15); color: var(--color-danger); border: 1px solid rgba(248,81,73,0.3); }
.badge-warning { background: rgba(227,179,65,0.15); color: var(--color-warning); border: 1px solid rgba(227,179,65,0.3); }
.badge-info { background: rgba(88,166,255,0.15); color: var(--color-info); border: 1px solid rgba(88,166,255,0.3); }
.badge-purple { background: rgba(188,140,255,0.15); color: var(--color-purple); border: 1px solid rgba(188,140,255,0.3); }
.badge-muted { background: var(--color-bg-tertiary); color: var(--color-text-muted); border: 1px solid var(--color-border); }

.circuit-badge { padding: 3px 10px; border-radius: 4px; }
.circuit-closed { background: rgba(0,255,136,0.12); color: var(--color-circuit-closed); border: 1px solid rgba(0,255,136,0.25); }
.circuit-open { background: rgba(248,81,73,0.12); color: var(--color-circuit-open); border: 1px solid rgba(248,81,73,0.25); }
.circuit-half_open { background: rgba(227,179,65,0.12); color: var(--color-circuit-half); border: 1px solid rgba(227,179,65,0.25); }

/* -- Buttons ---------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: var(--color-bg-tertiary);
    color: var(--color-text-primary);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
    font-family: var(--font-sans);
}

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

.btn-primary {
    background: var(--color-accent);
    color: var(--color-bg-primary);
    border-color: var(--color-accent);
    font-weight: 600;
}

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

.btn-danger {
    background: transparent;
    color: var(--color-danger);
    border-color: var(--color-red-dim);
}

.btn-danger:hover { background: rgba(248,81,73,0.1); }

.btn-sm { padding: 5px 10px; font-size: 0.78rem; }

.btn-group { display: flex; gap: 8px; flex-wrap: wrap; }

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

.form-group label {
    display: block;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: 6px;
    font-family: var(--font-mono);
}

.form-control {
    width: 100%;
    padding: 9px 12px;
    background: var(--color-bg-input);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    color: var(--color-text-primary);
    font-size: 0.85rem;
    font-family: var(--font-mono);
    transition: border-color var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-accent-border);
    box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.form-control::placeholder { color: var(--color-text-muted); }

select.form-control {
    appearance: none;
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%235a6370' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    padding-right: 30px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
}

/* -- Modal ------------------------------------------------------------ */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(4px);
}

.modal {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 560px;
    max-height: 85vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}

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

.modal-header h3 {
    font-family: var(--font-mono);
    font-size: 1rem;
    color: var(--color-text-bright);
}

.modal-close {
    background: none;
    border: none;
    color: var(--color-text-muted);
    font-size: 1.3rem;
    cursor: pointer;
    padding: 4px;
}

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

.modal-body { padding: 24px; }

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--color-border);
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

/* -- Volume Chart ----------------------------------------------------- */
.chart-container {
    height: 160px;
    display: flex;
    align-items: flex-end;
    gap: 2px;
    padding: 10px 0;
}

.chart-bar {
    flex: 1;
    background: var(--color-accent);
    opacity: 0.7;
    border-radius: 2px 2px 0 0;
    min-height: 2px;
    transition: opacity var(--transition);
    position: relative;
}

.chart-bar:hover { opacity: 1; }

.chart-bar.error {
    background: var(--color-danger);
    opacity: 0.8;
}

/* -- Filters ---------------------------------------------------------- */
.filters-bar {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
    align-items: center;
}

.filters-bar .form-control { width: auto; min-width: 150px; }

/* -- Empty State ------------------------------------------------------ */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--color-text-muted);
}

.empty-state-icon {
    font-size: 3rem;
    margin-bottom: 16px;
    opacity: 0.5;
}

.empty-state h3 {
    font-family: var(--font-mono);
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    margin-bottom: 8px;
}

.empty-state p { font-size: 0.85rem; max-width: 400px; margin: 0 auto; }

/* -- Toast / Notification --------------------------------------------- */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toast {
    padding: 12px 18px;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-size: 0.85rem;
    box-shadow: var(--shadow-md);
    animation: slideIn 0.3s ease;
    max-width: 400px;
    font-family: var(--font-mono);
}

.toast.success { border-left: 3px solid var(--color-success); }
.toast.error { border-left: 3px solid var(--color-danger); }
.toast.info { border-left: 3px solid var(--color-info); }

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

/* -- Status Codes ----------------------------------------------------- */
.status-2xx { color: var(--color-success); }
.status-4xx { color: var(--color-warning); }
.status-5xx { color: var(--color-danger); }

/* -- Grid layouts ----------------------------------------------------- */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 20px; }

/* -- Latency bar ------------------------------------------------------ */
.latency-bar {
    display: flex;
    align-items: center;
    gap: 8px;
}

.latency-bar-fill {
    height: 6px;
    border-radius: 3px;
    background: var(--color-accent);
    transition: width 0.3s ease;
}

.latency-bar-fill.slow { background: var(--color-warning); }
.latency-bar-fill.very-slow { background: var(--color-danger); }

/* -- Responsive ------------------------------------------------------- */
@media (max-width: 1200px) {
    .grid-3 { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 900px) {
    .sidebar { width: 200px; }
    .main-content { margin-left: 200px; padding: 20px; }
    .grid-2, .grid-3 { grid-template-columns: 1fr; }
    .metrics-grid { grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); }
}

@media (max-width: 600px) {
    .sidebar { display: none; }
    .main-content { margin-left: 0; }
}

/* -- Scrollbar styling ------------------------------------------------ */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--color-bg-primary); }
::-webkit-scrollbar-thumb {
    background: var(--color-border-light);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover { background: var(--color-text-muted); }

/* -- Key display ------------------------------------------------------ */
.key-display {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    background: var(--color-bg-input);
    padding: 4px 8px;
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    word-break: break-all;
    cursor: pointer;
}

.key-display:hover { border-color: var(--color-accent-border); }

/* -- Method badges ---------------------------------------------------- */
.method-badge {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 3px;
    text-transform: uppercase;
}

.method-GET { background: rgba(88,166,255,0.15); color: var(--color-blue); }
.method-POST { background: rgba(0,255,136,0.15); color: var(--color-success); }
.method-PUT { background: rgba(227,179,65,0.15); color: var(--color-warning); }
.method-DELETE { background: rgba(248,81,73,0.15); color: var(--color-danger); }
.method-PATCH { background: rgba(188,140,255,0.15); color: var(--color-purple); }