/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color Palette - Modern SaaS Darkish Theme */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #64748b;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #06b6d4;
    
    /* Background Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-sidebar: #0f172a;
    --bg-card: #ffffff;
    --bg-hover: #f1f5f9;
    
    /* Text Colors */
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-light: #94a3b8;
    --text-white: #ffffff;
    
    /* Borders */
    --border-color: #e2e8f0;
    --border-radius: 12px;
    --border-radius-sm: 6px;
    
    /* Spacing System */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

body {
    font-family: 'Inter', -apple-system, sans-serif;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Utils */
.text-center { text-align: center; }
.whitespace-nowrap { white-space: nowrap; }
.code-sm { font-family: monospace; font-size: 0.8rem; background: var(--bg-secondary); padding: 2px 4px; border-radius: 4px; }

/* Dashboard Layout */
.dashboard-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background-color: var(--bg-sidebar);
    color: var(--text-white);
    position: fixed;
    height: 100vh;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1000;
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
}

.sidebar.collapsed {
    width: 80px;
}

.sidebar-header {
    padding: 0 var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.sidebar-toggle {
    background: rgba(255, 255, 255, 0.05);
    border: none;
    color: var(--text-white);
    width: 32px;
    height: 32px;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    opacity: 0.7;
    flex-shrink: 0;
}

.sidebar-toggle:hover {
    background: rgba(255, 255, 255, 0.1);
    opacity: 1;
}

.sidebar.collapsed .sidebar-header {
    justify-content: center;
    padding: 0;
}

.sidebar.collapsed .logo {
    display: none;
}

.sidebar.collapsed .sidebar-toggle {
    opacity: 1;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: -0.025em;
    overflow: hidden;
    white-space: nowrap;
}

.logo i {
    color: var(--primary-light);
    font-size: 1.5rem;
    min-width: 24px;
}

.sidebar-menu {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md) 0;
}

.menu-section {
    padding-bottom: var(--spacing-md);
}

.menu-title {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-light);
    padding: 0 var(--spacing-lg) var(--spacing-sm);
    letter-spacing: 0.1em;
    opacity: 0.5;
}

.sidebar.collapsed .menu-title {
    display: none;
}

.menu-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem var(--spacing-lg);
    color: #94a3b8;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s;
    border-left: 3px solid transparent;
}

.menu-item:hover {
    color: var(--text-white);
    background: rgba(255, 255, 255, 0.03);
}

.menu-item.active {
    color: var(--text-white);
    background: linear-gradient(90deg, rgba(99, 102, 241, 0.1), transparent);
    border-left-color: var(--primary);
}

.sidebar.collapsed .menu-item {
    justify-content: center;
    padding: 0.75rem 0;
    border-left: none;
}

.sidebar.collapsed .menu-item span {
    display: none;
}

.sidebar.collapsed .menu-item i {
    font-size: 1.25rem;
}

/* Sidebar Tooltips (for collapsed state) */
.sidebar.collapsed .menu-item {
    position: relative;
}

.sidebar.collapsed .menu-item::after {
    content: attr(data-tooltip);
    position: absolute;
    left: 100%;
    margin-left: 10px;
    background: #1e293b;
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
    white-space: nowrap;
    z-index: 1001;
}

.sidebar.collapsed .menu-item:hover::after {
    opacity: 1;
}

.sidebar-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 70px;
}

.sidebar.collapsed .sidebar-footer {
    justify-content: center;
    padding: var(--spacing-lg) 0;
}

.sidebar.collapsed .user-details,
.sidebar.collapsed .logout-btn {
    display: none;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    overflow: hidden;
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.user-details {
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.user-name {
    font-size: 0.875rem;
    font-weight: 600;
    white-space: nowrap;
    text-overflow: ellipsis;
}

.user-role {
    font-size: 0.75rem;
    color: var(--text-light);
    opacity: 0.7;
}

.logout-btn {
    background: none;
    border: none;
    color: #94a3b8;
    cursor: pointer;
    font-size: 1.125rem;
    transition: color 0.2s;
}

.logout-btn:hover {
    color: var(--danger);
}

/* Main Content Area */
.main-content {
    margin-left: 260px;
    flex: 1;
    min-height: 100vh;
    transition: all 0.3s;
    display: flex;
    flex-direction: column;
}

.sidebar.collapsed ~ .main-content {
    margin-left: 80px;
}

.top-nav {
    height: 70px;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-xl);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-left .page-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: 0.875rem;
    cursor: pointer;
    transition: color 0.2s;
}

.nav-item:hover {
    color: var(--primary);
}

/* Page Content */
.page-content {
    padding: var(--spacing-xl);
    flex: 1;
    animation: fadeIn 0.3s ease-out;
}

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

/* Grids */
.grid-2, .grid-3 {
    display: grid;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.grid-2 { grid-template-columns: repeat(auto-fit, minmax(400px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }

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

.stat-card {
    background: var(--bg-card);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    display: flex;
    gap: 1.25rem;
    align-items: center;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.stat-card:hover {
    border-color: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.stat-icon.primary { background: rgba(99, 102, 241, 0.1); color: var(--primary); }
.stat-icon.success { background: rgba(16, 185, 129, 0.1); color: var(--success); }
.stat-icon.warning { background: rgba(245, 158, 11, 0.1); color: var(--warning); }
.stat-icon.danger { background: rgba(239, 68, 68, 0.1); color: var(--danger); }

.stat-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.025em;
    line-height: 1.2;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 2px;
}

.stat-change {
    font-size: 0.75rem;
    font-weight: 600;
    margin-top: 4px;
}

.stat-change.positive { color: var(--success); }
.stat-change.negative { color: var(--danger); }

/* Generic Cards */
.card {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    margin-bottom: 1.5rem;
    display: flex;
    flex-direction: column;
}

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

.card-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.card-body {
    padding: var(--spacing-lg);
}

.card-action-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1rem;
    transition: color 0.2s;
}

.card-action-btn:hover {
    color: var(--primary);
}

/* Tables */
.table-container {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th {
    background: #f8fafc;
    text-align: left;
    padding: 0.75rem 1rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #64748b;
    border-bottom: 1px solid var(--border-color);
}

.table td {
    padding: 1rem;
    border-bottom: 1px solid #f1f5f9;
    font-size: 0.875rem;
}

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

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

/* Badges */
.status-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
}

.status-badge.online, .status-badge.success { background: #dcfce7; color: #166534; }
.status-badge.offline, .status-badge.danger { background: #fee2e2; color: #991b1b; }
.status-badge.warning { background: #fef9c3; color: #854d0e; }

.badge-client {
    background: #f1f5f9;
    color: #475569;
    padding: 2px 8px;
    border-radius: 6px;
    font-family: monospace;
    font-size: 0.85rem;
    border: 1px solid #e2e8f0;
}

/* Charts */
.chart-container {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
}

/* Forms */
.form-control {
    margin-bottom: 1.25rem;
}

.form-control label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.form-control input, .form-control textarea, .form-control select {
    width: 100%;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    padding: 0.75rem;
    font-family: inherit;
    font-size: 0.875rem;
    transition: all 0.2s;
}

.form-control input:focus, .form-control textarea:focus, .form-control select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s;
    border: 1px solid transparent;
}

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

.btn-secondary { background: white; border-color: var(--border-color); color: var(--text-secondary); }
.btn-secondary:hover { background: var(--bg-hover); color: var(--text-primary); }

.btn-danger { background: var(--danger); color: white; }
.btn-danger:hover { background: #dc2626; }

/* Modals */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s;
}

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

.modal-content {
    background: white;
    border-radius: 16px;
    width: 90%;
    max-width: 500px;
    box-shadow: var(--shadow-lg);
    transform: translateY(20px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal.active .modal-content {
    transform: translateY(0);
}

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

.modal-title {
    font-size: 1.125rem;
    font-weight: 700;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1.25rem;
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    padding: 1.25rem 1.5rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
}

/* WebSocket Dot Pulse */
@keyframes ws-pulse {
    0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4); }
    70% { box-shadow: 0 0 0 10px rgba(16, 185, 129, 0); }
    100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.ws-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-light);
}

.ws-dot.connected {
    background: var(--success);
    animation: ws-pulse 2s infinite;
}

.ws-dot.disconnected { background: var(--danger); }
.ws-dot.error { background: var(--warning); }

/* Loading Spinner */
.spinner-container {
    display: none;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 2000;
}

.loading .spinner-container {
    display: block;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(99, 102, 241, 0.1);
    border-radius: 50%;
    border-top-color: var(--primary);
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Login Screen */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(circle at top left, #1e293b, #0f172a);
    padding: 1.5rem;
}

.login-card {
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    padding: 3rem;
    width: 100%;
    max-width: 450px;
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-icon {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

.login-subtitle {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.login-btn {
    width: 100%;
    padding: 0.75rem;
    margin-top: 1rem;
}

.error-message {
    background: #fef2f2;
    color: var(--danger);
    padding: 0.75rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
    display: none;
    align-items: center;
    gap: 0.5rem;
}

/* Provider Grid Details */
.provider-card-header .provider-info {
    display: flex;
    flex-direction: column;
}

.provider-id {
    font-size: 0.75rem;
    color: var(--text-light);
    font-weight: 600;
}

.provider-meta {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.provider-card-footer {
    padding: 1rem 1.25rem;
    background: #f8fafc;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 0.75rem;
}

.btn-sm {
    padding: 0.4rem 0.75rem;
    font-size: 0.75rem;
}

/* Toast Container */
.toast-container {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 3000;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.toast {
    background: white;
    border-radius: 12px;
    padding: 1rem;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 1rem;
    min-width: 300px;
    border-left: 4px solid var(--primary);
    animation: slideIn 0.3s ease-out forwards;
}

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

.toast.success { border-left-color: var(--success); }
.toast.error { border-left-color: var(--danger); }
.toast.warning { border-left-color: var(--warning); }

.toast-content { flex: 1; }
.toast-title { font-weight: 700; font-size: 0.875rem; }
.toast-message { font-size: 0.8rem; color: var(--text-secondary); }
.toast-close { background: none; border: none; color: var(--text-light); cursor: pointer; }