/* ==========================================================================
   WireGuard Broker - Modern Glassmorphic Dark Dashboard Styles
   ========================================================================== */

:root {
    --bg-base: #090d16;
    --bg-surface: #0f172a;
    --bg-surface-elevated: #1e293b;
    --bg-glass: rgba(17, 24, 39, 0.75);
    --bg-glass-card: rgba(30, 41, 59, 0.55);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.16);
    
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --primary-glow: rgba(99, 102, 241, 0.35);

    --cyan: #06b6d4;
    --cyan-glow: rgba(6, 182, 212, 0.3);

    --success: #10b981;
    --success-bg: rgba(16, 185, 129, 0.12);
    --success-glow: rgba(16, 185, 129, 0.3);

    --warning: #f59e0b;
    --warning-bg: rgba(245, 158, 11, 0.12);

    --danger: #ef4444;
    --danger-bg: rgba(239, 68, 68, 0.12);
    --danger-glow: rgba(239, 68, 68, 0.3);

    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --text-dim: #64748b;

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-full: 9999px;

    --shadow-card: 0 10px 25px -5px rgba(0, 0, 0, 0.4), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
    --shadow-modal: 0 25px 50px -12px rgba(0, 0, 0, 0.6);
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-base);
    color: var(--text-main);
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background-image: 
        radial-gradient(circle at 15% 15%, rgba(99, 102, 241, 0.12) 0%, transparent 40%),
        radial-gradient(circle at 85% 85%, rgba(6, 182, 212, 0.08) 0%, transparent 45%);
    background-attachment: fixed;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
    background: var(--bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 50;
    padding: 0.85rem 1.5rem;
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--text-main);
}

.brand-icon {
    width: 38px;
    height: 38px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--primary), var(--cyan));
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 15px var(--primary-glow);
}

.brand-icon svg {
    width: 22px;
    height: 22px;
    fill: #ffffff;
}

.brand-title {
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.brand-badge {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: rgba(99, 102, 241, 0.2);
    border: 1px solid rgba(99, 102, 241, 0.4);
    color: #a5b4fc;
    padding: 2px 7px;
    border-radius: var(--radius-full);
}

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

.status-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    padding: 0.35rem 0.85rem;
    border-radius: var(--radius-full);
    font-size: 0.82rem;
    color: var(--text-muted);
}

.pulse-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    position: relative;
}

.pulse-dot.online {
    background-color: var(--success);
    box-shadow: 0 0 8px var(--success-glow);
}

.pulse-dot.online::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    border-radius: 50%;
    background-color: var(--success);
    animation: pulse 2s infinite;
}

.pulse-dot.offline {
    background-color: var(--danger);
    box-shadow: 0 0 8px var(--danger-glow);
}

@keyframes pulse {
    0% { transform: scale(1); opacity: 0.8; }
    70% { transform: scale(2.5); opacity: 0; }
    100% { transform: scale(1); opacity: 0; }
}

/* ==========================================================================
   Main Layout & Container
   ========================================================================== */
.main-wrapper {
    flex: 1;
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
    padding: 1.75rem 1.5rem 3rem;
}

/* ==========================================================================
   Stat Metric Cards
   ========================================================================== */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.25rem;
    margin-bottom: 2rem;
}

.metric-card {
    background: var(--bg-glass-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    box-shadow: var(--shadow-card);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.metric-card:hover {
    transform: translateY(-2px);
    border-color: var(--border-hover);
}

.metric-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.metric-title {
    font-size: 0.82rem;
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}

.metric-icon-box {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-muted);
}

.metric-value {
    font-size: 1.85rem;
    font-weight: 700;
    color: var(--text-main);
    letter-spacing: -0.03em;
}

.metric-meta {
    font-size: 0.78rem;
    color: var(--text-dim);
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.metric-meta .highlight {
    color: var(--success);
    font-weight: 600;
}

/* ==========================================================================
   Tabs Navigation
   ========================================================================== */
.tabs-nav {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 1.5rem;
    overflow-x: auto;
    padding-bottom: 2px;
}

.tab-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 0.92rem;
    font-weight: 500;
    padding: 0.65rem 1.15rem;
    border-radius: var(--radius-md) var(--radius-md) 0 0;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
    position: relative;
    white-space: nowrap;
}

.tab-btn:hover {
    color: var(--text-main);
    background: rgba(255, 255, 255, 0.03);
}

.tab-btn.active {
    color: #ffffff;
    font-weight: 600;
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--cyan));
    border-radius: 2px;
    box-shadow: 0 0 10px var(--primary-glow);
}

.tab-badge {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-muted);
    font-size: 0.72rem;
    padding: 1px 6px;
    border-radius: var(--radius-full);
}

.tab-btn.active .tab-badge {
    background: var(--primary);
    color: #ffffff;
}

/* ==========================================================================
   Card Panels & Tables
   ========================================================================== */
.content-panel {
    background: var(--bg-glass-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    overflow: hidden;
}

.panel-toolbar {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.search-box {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.45rem 0.85rem;
    min-width: 260px;
    transition: var(--transition);
}

.search-box:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--primary-glow);
}

.search-box input {
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-main);
    font-size: 0.88rem;
    width: 100%;
}

.search-box input::placeholder {
    color: var(--text-dim);
}

.toolbar-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

/* ==========================================================================
   Table Styles
   ========================================================================== */
.table-responsive {
    overflow-x: auto;
    width: 100%;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.88rem;
    text-align: left;
}

.data-table th {
    background: rgba(15, 23, 42, 0.5);
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.85rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}

.data-table td {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-main);
    vertical-align: middle;
}

.data-table tbody tr {
    transition: var(--transition);
}

.data-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

.client-name-cell {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.client-avatar {
    width: 34px;
    height: 34px;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #a5b4fc;
    font-weight: 600;
    font-size: 0.85rem;
}

.client-info h4 {
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 2px;
}

.client-info p {
    font-size: 0.75rem;
    color: var(--text-dim);
    font-family: monospace;
}

/* ==========================================================================
   Badges & Pills
   ========================================================================== */
.status-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.75rem;
    font-weight: 500;
    padding: 0.25rem 0.65rem;
    border-radius: var(--radius-full);
}

.status-pill.online {
    background: var(--success-bg);
    color: #34d399;
    border: 1px solid rgba(16, 185, 129, 0.25);
}

.status-pill.offline {
    background: rgba(100, 116, 139, 0.12);
    color: #94a3b8;
    border: 1px solid rgba(100, 116, 139, 0.2);
}

.status-pill.pending {
    background: rgba(245, 158, 11, 0.12);
    color: #fbbf24;
    border: 1px solid rgba(245, 158, 11, 0.25);
}

.status-pill.redeemed {
    background: rgba(99, 102, 241, 0.12);
    color: #818cf8;
    border: 1px solid rgba(99, 102, 241, 0.25);
}

.code-display {
    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    background: rgba(0, 0, 0, 0.35);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #38bdf8;
    padding: 0.2rem 0.6rem;
    border-radius: var(--radius-sm);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    transition: var(--transition);
}

.code-display:hover {
    border-color: #38bdf8;
    box-shadow: 0 0 10px rgba(56, 189, 248, 0.2);
}

.ip-badge {
    font-family: monospace;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    padding: 0.15rem 0.5rem;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    color: #cbd5e1;
}

/* ==========================================================================
   Buttons & Interactive Elements
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    padding: 0.5rem 1rem;
    font-size: 0.86rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    border: none;
    text-decoration: none;
    font-family: inherit;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), #4f46e5);
    color: #ffffff;
    box-shadow: 0 4px 12px var(--primary-glow);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 16px var(--primary-glow);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border-color);
    color: var(--text-main);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--border-hover);
}

.btn-danger {
    background: var(--danger-bg);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #f87171;
}

.btn-danger:hover {
    background: rgba(239, 68, 68, 0.2);
}

.btn-icon {
    padding: 0.45rem;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition);
}

.btn-icon:hover {
    color: var(--text-main);
    background: rgba(255, 255, 255, 0.08);
}

/* Switch Toggle */
.switch {
    position: relative;
    display: inline-block;
    width: 38px;
    height: 22px;
}

.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: .3s;
    border-radius: 22px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .3s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--success);
    box-shadow: 0 0 8px var(--success-glow);
}

input:checked + .slider:before {
    transform: translateX(16px);
}

/* ==========================================================================
   Modals
   ========================================================================== */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(3, 7, 18, 0.8);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    z-index: 100;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, visibility 0.2s ease;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 540px;
    box-shadow: var(--shadow-modal);
    transform: scale(0.95);
    transition: transform 0.2s ease;
    overflow: hidden;
}

.modal-overlay.active .modal-content {
    transform: scale(1);
}

.modal-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-color);
    background: rgba(15, 23, 42, 0.5);
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
}

/* Form inputs in modal */
.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-muted);
    margin-bottom: 0.4rem;
}

.form-control {
    width: 100%;
    background: rgba(15, 23, 42, 0.7);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.6rem 0.85rem;
    font-size: 0.9rem;
    color: var(--text-main);
    outline: none;
    font-family: inherit;
    transition: var(--transition);
}

.form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--primary-glow);
}

.form-help {
    font-size: 0.75rem;
    color: var(--text-dim);
    margin-top: 0.35rem;
}

/* QR Code Display */
.qr-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    background: #ffffff;
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
}

.qr-container svg {
    max-width: 240px;
    height: auto;
}

/* Code viewer */
.code-viewer {
    background: #050811;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1rem;
    font-family: monospace;
    font-size: 0.82rem;
    color: #e2e8f0;
    max-height: 280px;
    overflow-y: auto;
    white-space: pre-wrap;
    word-break: break-all;
    line-height: 1.6;
}

/* ==========================================================================
   Toast Notifications
   ========================================================================== */
.toast-container {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    z-index: 150;
}

.toast {
    background: var(--bg-surface-elevated);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: var(--shadow-modal);
    animation: slideUp 0.3s ease forwards;
}

.toast.success {
    border-left: 4px solid var(--success);
}

.toast.error {
    border-left: 4px solid var(--danger);
}

@keyframes slideUp {
    from { transform: translateY(20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

/* ==========================================================================
   Documentation & Simulator Tabs
   ========================================================================== */
.doc-card {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.doc-section-title {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.snippet-box {
    background: #050811;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.snippet-header {
    background: rgba(15, 23, 42, 0.8);
    padding: 0.5rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.75rem;
    color: var(--text-muted);
}

.snippet-code {
    padding: 1rem;
    font-family: monospace;
    font-size: 0.82rem;
    color: #e2e8f0;
    overflow-x: auto;
    line-height: 1.5;
}

/* Simulator Form */
.sim-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

@media (max-width: 900px) {
    .sim-grid {
        grid-template-columns: 1fr;
    }
}