/* ==========================================================================
   Lomu Trading Platform - Modern CSS Framework
   Professional Trading Dashboard Styling
   ========================================================================== */

/* ==========================================================================
   CSS Variables & Color Palette
   ========================================================================== */
:root {
    /* Brand Colors */
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #3b82f6;
    --secondary-color: #8b5cf6;
    --accent-color: #10b981;
    
    /* Trading Colors */
    --success-color: #10b981;
    --profit-color: #22c55e;
    --danger-color: #ef4444;
    --loss-color: #f87171;
    --warning-color: #f59e0b;
    --info-color: #3b82f6;
    
    /* Neutral Colors - Light Mode */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
    
    /* Layout */
    --sidebar-width: 260px;
    --sidebar-collapsed-width: 70px;
    --navbar-height: 64px;
    --footer-height: 60px;
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Fonts */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, monospace;
}

/* Dark Mode Variables */
[data-theme="dark"],
body.dark-mode {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --border-color: #334155;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.3);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.3);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.3);
}

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

body {
    font-family: var(--font-primary);
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-dark);
}

/* ==========================================================================
   Loading Overlay
   ========================================================================== */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.loading-overlay:not(.d-none) {
    opacity: 1;
    visibility: visible;
}

.loading-spinner {
    text-align: center;
}

/* ==========================================================================
   Top Navbar
   ========================================================================== */
.top-navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--navbar-height);
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    box-shadow: var(--shadow-md);
    z-index: 1030;
    padding: 0 1.5rem;
}

.top-navbar .navbar-brand {
    font-size: 1.25rem;
    font-weight: 700;
    color: #ffffff !important;
    display: flex;
    align-items: center;
    transition: transform var(--transition-fast);
}

.top-navbar .navbar-brand:hover {
    transform: scale(1.02);
}

.top-navbar .brand-text {
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sidebar-toggle {
    color: rgba(255, 255, 255, 0.9) !important;
    font-size: 1.25rem;
    padding: 0.5rem;
    margin-right: 1rem;
    border: none;
    background: transparent;
    transition: color var(--transition-fast);
}

.sidebar-toggle:hover {
    color: #ffffff !important;
}

/* Status Indicator */
.status-indicator {
    display: flex;
    align-items: center;
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.875rem;
}

.status-indicator .fa-circle {
    color: var(--success-color);
    font-size: 0.5rem;
    margin-right: 0.25rem;
}

.status-indicator .pulse {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Navbar Dropdowns */
.top-navbar .nav-link {
    color: rgba(255, 255, 255, 0.9) !important;
    font-size: 1.125rem;
    padding: 0.5rem;
    transition: color var(--transition-fast);
}

.top-navbar .nav-link:hover {
    color: #ffffff !important;
}

.user-avatar {
    font-size: 1.5rem;
}

.notification-badge {
    position: absolute;
    top: 0;
    right: 0;
    background-color: var(--danger-color);
    color: white;
    border-radius: 50%;
    padding: 0.15rem 0.4rem;
    font-size: 0.675rem;
    font-weight: 700;
}

.notification-dropdown {
    min-width: 320px;
    max-height: 400px;
    overflow-y: auto;
}

.notification-dropdown .dropdown-item {
    white-space: normal;
    padding: 0.75rem 1rem;
}

/* ==========================================================================
   Sidebar Navigation
   ========================================================================== */
.sidebar {
    position: fixed;
    top: var(--navbar-height);
    left: 0;
    width: var(--sidebar-width);
    height: calc(100vh - var(--navbar-height));
    background-color: var(--bg-primary);
    border-right: 1px solid var(--border-color);
    overflow-y: auto;
    overflow-x: hidden;
    transition: width var(--transition-normal), transform var(--transition-normal);
    z-index: 1020;
    box-shadow: var(--shadow-lg);
}

.sidebar-content {
    display: flex;
    flex-direction: column;
    height: 100%;
    padding: 1.5rem 0;
}

.sidebar.collapsed {
    width: var(--sidebar-collapsed-width);
}

.sidebar.collapsed .nav-link span,
.sidebar.collapsed .account-selector label,
.sidebar.collapsed .account-selector select,
.sidebar.collapsed .sidebar-footer .system-info div {
    opacity: 0;
    visibility: hidden;
}

.sidebar.collapsed .nav-link {
    justify-content: center;
    padding-left: 0;
    padding-right: 0;
}

/* Account Selector */
.account-selector {
    padding: 0 1rem;
    margin-bottom: 1rem;
}

.account-selector .form-select {
    background-color: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.account-selector .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(37, 99, 235, 0.25);
}

.sidebar-divider {
    border-color: var(--border-color);
    margin: 0 1rem;
}

/* Navigation Links */
.sidebar-nav {
    flex: 1;
}

.sidebar-nav .nav-link {
    display: flex;
    align-items: center;
    padding: 0.75rem 1.5rem;
    color: var(--text-secondary);
    font-size: 0.9375rem;
    font-weight: 500;
    transition: all var(--transition-fast);
    border-left: 3px solid transparent;
}

.sidebar-nav .nav-link i {
    width: 1.25rem;
    margin-right: 0.75rem;
    font-size: 1.125rem;
    transition: all var(--transition-fast);
}

.sidebar-nav .nav-link:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border-left-color: var(--primary-light);
}

.sidebar-nav .nav-link.active {
    background: linear-gradient(90deg, rgba(37, 99, 235, 0.1) 0%, transparent 100%);
    color: var(--primary-color);
    border-left-color: var(--primary-color);
    font-weight: 600;
}

.sidebar-nav .nav-link.active i {
    color: var(--primary-color);
}

/* Sidebar Footer */
.sidebar-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-color);
}

.system-info div {
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

/* ==========================================================================
   Main Content Area
   ========================================================================== */
.main-content {
    margin-left: var(--sidebar-width);
    margin-top: var(--navbar-height);
    min-height: calc(100vh - var(--navbar-height));
    transition: margin-left var(--transition-normal);
    padding-bottom: var(--footer-height);
}

.main-content.expanded {
    margin-left: var(--sidebar-collapsed-width);
}

.content-wrapper {
    padding: 2rem;
    max-width: 1600px;
    margin: 0 auto;
}

/* Flash Messages */
.flash-messages {
    margin-bottom: 1.5rem;
}

.flash-messages .alert {
    border-radius: var(--radius-md);
    border: none;
    box-shadow: var(--shadow-md);
}

/* ==========================================================================
   Cards & Panels
   ========================================================================== */
.card {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast);
    margin-bottom: 1.5rem;
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card-header {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 1.5rem;
    font-weight: 600;
    font-size: 1.125rem;
    color: var(--text-primary);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.card-body {
    padding: 1.5rem;
}

/* KPI Cards */
.kpi-card {
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.kpi-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--primary-color), var(--secondary-color));
}

.kpi-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.kpi-card .kpi-icon {
    font-size: 2.5rem;
    opacity: 0.2;
    position: absolute;
    top: 1rem;
    right: 1rem;
}

.kpi-card .kpi-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.5rem;
}

.kpi-card .kpi-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
}

.kpi-card .kpi-change {
    font-size: 0.875rem;
    margin-top: 0.5rem;
    display: flex;
    align-items: center;
}

.kpi-card .kpi-change.positive {
    color: var(--success-color);
}

.kpi-card .kpi-change.negative {
    color: var(--danger-color);
}

/* ==========================================================================
   Tables
   ========================================================================== */
.table {
    color: var(--text-primary);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.table thead {
    background-color: var(--bg-tertiary);
}

.table thead th {
    border-bottom: 2px solid var(--border-color);
    color: var(--text-primary);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.8125rem;
    letter-spacing: 0.5px;
    padding: 1rem;
}

.table tbody td {
    padding: 1rem;
    border-top: 1px solid var(--border-color);
    vertical-align: middle;
}

.table-striped > tbody > tr:nth-of-type(odd) {
    background-color: var(--bg-secondary);
}

.table-hover tbody tr {
    transition: background-color var(--transition-fast);
    cursor: pointer;
}

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

/* Table Responsive */
.table-responsive {
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    border: none;
    box-shadow: var(--shadow-sm);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn:active {
    transform: translateY(0);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark), #1e3a8a);
}

.btn-success {
    background: linear-gradient(135deg, var(--success-color), #059669);
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger-color), #dc2626);
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning-color), #d97706);
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: 1.125rem;
}

/* ==========================================================================
   Forms
   ========================================================================== */
.form-control,
.form-select {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: var(--radius-md);
    padding: 0.625rem 0.875rem;
    transition: all var(--transition-fast);
}

.form-control:focus,
.form-select:focus {
    background-color: var(--bg-primary);
    border-color: var(--primary-color);
    color: var(--text-primary);
    box-shadow: 0 0 0 0.2rem rgba(37, 99, 235, 0.25);
}

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

/* ==========================================================================
   Charts & Data Visualization
   ========================================================================== */
.chart-container {
    position: relative;
    height: 350px;
    padding: 1rem;
    background-color: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

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

.chart-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.chart-filters {
    display: flex;
    gap: 0.5rem;
}

/* ==========================================================================
   Badges & Labels
   ========================================================================== */
.badge {
    padding: 0.375rem 0.75rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-success {
    background-color: var(--success-color);
    color: white;
}

.badge-danger {
    background-color: var(--danger-color);
    color: white;
}

.badge-warning {
    background-color: var(--warning-color);
    color: white;
}

.badge-info {
    background-color: var(--info-color);
    color: white;
}

/* ==========================================================================
   Modals
   ========================================================================== */
.modal-content {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
}

.modal-header {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.modal-title {
    color: var(--text-primary);
    font-weight: 600;
}

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

.modal-footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
    background-color: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    padding: 1rem 2rem;
    margin-top: 3rem;
}

/* ==========================================================================
   Utility Classes
   ========================================================================== */
.text-success { color: var(--success-color) !important; }
.text-danger { color: var(--danger-color) !important; }
.text-warning { color: var(--warning-color) !important; }
.text-info { color: var(--info-color) !important; }
.text-muted { color: var(--text-muted) !important; }
.text-primary { color: var(--primary-color) !important; }

.bg-success { background-color: var(--success-color) !important; }
.bg-danger { background-color: var(--danger-color) !important; }
.bg-warning { background-color: var(--warning-color) !important; }

/* ==========================================================================
   Responsive Design
   ========================================================================== */
@media (max-width: 991px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.show {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .content-wrapper {
        padding: 1rem;
    }
}

@media (max-width: 768px) {
    .top-navbar {
        padding: 0 1rem;
    }
    
    .kpi-card .kpi-value {
        font-size: 1.5rem;
    }
    
    .chart-container {
        height: 250px;
    }
}

/* ==========================================================================
   Dark Mode Specific Styles
   ========================================================================== */
body.dark-mode .table {
    --bs-table-bg: var(--bg-primary);
}

body.dark-mode .dropdown-menu {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
}

body.dark-mode .dropdown-item {
    color: var(--text-primary);
}

body.dark-mode .dropdown-item:hover {
    background-color: var(--bg-tertiary);
}

body.dark-mode .btn-close {
    filter: invert(1);
}

/* ==========================================================================
   Animations
   ========================================================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.5s ease-in-out;
}

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

.slide-in {
    animation: slideIn 0.3s ease-out;
}

/* ==========================================================================
   Scrollbar Styling
   ========================================================================== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Dark mode scrollbar */
body.dark-mode::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
}

body.dark-mode::-webkit-scrollbar-thumb:hover {
    background: var(--border-color);
}