/* ============================================
   AI Trading Platform V8 - Main Stylesheet
   Professional Dark Theme
   ============================================ */

/* CSS Variables */
:root {
    /* Colors */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-card: #1e293b;
    
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --accent-blue: #3b82f6;
    --accent-green: #10b981;
    --accent-red: #ef4444;
    --accent-yellow: #f59e0b;
    --accent-purple: #8b5cf6;
    --accent-orange: #f97316;
    
    --border-color: #334155;
    --border-light: #475569;
    
    /* Spacing */
    --sidebar-width: 260px;
    --header-height: 64px;
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.4);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

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

a:hover {
    color: var(--accent-green);
}

/* ============================================
   Layout - App Container with Sidebar
   ============================================ */

.app-container {
    display: flex;
    min-height: 100vh;
}

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

.sidebar-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    text-align: center;
}

.sidebar-header h2 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.version-badge {
    display: inline-block;
    padding: 2px 10px;
    background: var(--accent-blue);
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
}

.sidebar-nav {
    flex: 1;
    padding: var(--spacing-md) 0;
}

.nav-section-title {
    padding: var(--spacing-md) var(--spacing-lg) var(--spacing-sm);
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
}

.nav-item {
    display: block;
    padding: var(--spacing-sm) var(--spacing-lg);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    border-left: 3px solid transparent;
    font-size: 14px;
}

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

.nav-item.active {
    background: rgba(59, 130, 246, 0.1);
    color: var(--accent-blue);
    border-left-color: var(--accent-blue);
    font-weight: 600;
}

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

.user-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-sm);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
}

.user-avatar {
    font-size: 20px;
}

.user-name {
    font-size: 14px;
    font-weight: 500;
}

.logout-btn {
    width: 100%;
}

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

.content-wrapper {
    padding: var(--spacing-xl);
}

/* ============================================
   Login Page Styles
   ============================================ */

.public-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--bg-primary) 0%, #1a1a2e 100%);
    padding: var(--spacing-md);
}

.login-container {
    width: 100%;
    max-width: 420px;
}

.login-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

.login-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.login-logo {
    font-size: 56px;
    margin-bottom: var(--spacing-md);
}

.login-header h1 {
    font-size: 26px;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.login-subtitle {
    color: var(--accent-blue);
    font-size: 14px;
    font-weight: 600;
}

.login-tagline {
    color: var(--text-muted);
    font-size: 13px;
    margin-top: var(--spacing-xs);
}

.login-form .form-group {
    margin-bottom: var(--spacing-lg);
}

.login-form label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
}

.input-icon {
    margin-right: var(--spacing-sm);
}

.login-form input[type="text"],
.login-form input[type="password"] {
    width: 100%;
    padding: 12px 12px 12px 36px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 15px;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.login-form input:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.login-footer {
    text-align: center;
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

.login-footer p {
    color: var(--text-muted);
    font-size: 12px;
    margin-bottom: var(--spacing-xs);
}

.version-text {
    color: var(--accent-blue) !important;
    font-weight: 600;
}

/* ============================================
   Buttons
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-sm {
    padding: 6px 14px;
    font-size: 13px;
}

.btn-block {
    width: 100%;
}

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

.btn-primary:hover:not(:disabled) {
    background: #2563eb;
    transform: translateY(-1px);
}

.btn-success {
    background: var(--accent-green);
    color: white;
}

.btn-success:hover:not(:disabled) {
    background: #059669;
}

.btn-danger {
    background: var(--accent-red);
    color: white;
}

.btn-danger:hover:not(:disabled) {
    background: #dc2626;
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.btn-outline:hover:not(:disabled) {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-color: var(--border-light);
}

/* ============================================
   Cards & Components
   ============================================ */

.card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    background: rgba(255, 255, 255, 0.02);
}

.card-header h3 {
    font-size: 16px;
    font-weight: 600;
}

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

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.stat-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

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

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
}

.stat-blue .stat-icon { background: rgba(59, 130, 246, 0.15); }
.stat-green .stat-icon { background: rgba(16, 185, 129, 0.15); }
.stat-orange .stat-icon { background: rgba(249, 115, 22, 0.15); }
.stat-purple .stat-icon { background: rgba(139, 92, 246, 0.15); }

.stat-info {
    display: flex;
    flex-direction: column;
}

.stat-label {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.stat-value {
    font-size: 28px;
    font-weight: 700;
    line-height: 1.2;
}

.stat-sub {
    font-size: 12px;
    color: var(--text-muted);
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

/* Page Header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-xl);
}

.page-header h1 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.page-subtitle {
    color: var(--text-muted);
    font-size: 14px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.market-status {
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
}

.status-open {
    background: rgba(16, 185, 129, 0.15);
    color: var(--accent-green);
}

.status-closed {
    background: rgba(239, 68, 68, 0.15);
    color: var(--accent-red);
}

.current-time {
    color: var(--text-muted);
    font-size: 14px;
    font-family: monospace;
}

/* Tables */
.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th,
.data-table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    background: var(--bg-tertiary);
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
}

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

.text-muted {
    color: var(--text-muted);
    font-size: 13px;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-success { background: rgba(16, 185, 129, 0.15); color: var(--accent-green); }
.badge-danger { background: rgba(239, 68, 68, 0.15); color: var(--accent-red); }
.badge-warning { background: rgba(245, 158, 11, 0.15); color: var(--accent-yellow); }
.badge-info { background: rgba(59, 130, 246, 0.15); color: var(--accent-blue); }
.badge-pending { background: rgba(249, 115, 22, 0.15); color: var(--accent-orange); }

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

.empty-state p {
    margin-bottom: var(--spacing-md);
    font-size: 15px;
}

/* Strategy List */
.strategy-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.strategy-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.strategy-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.strategy-type {
    font-size: 12px;
    color: var(--text-muted);
}

/* Quick Actions */
.quick-actions {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid var(--border-color);
}

.quick-actions h3 {
    margin-bottom: var(--spacing-md);
    font-size: 16px;
}

.action-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

/* Flash Messages / Alerts */
.flash-messages {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    max-width: 400px;
}

.alert,
.flash-message {
    padding: 14px 20px;
    border-radius: var(--radius-md);
    font-size: 14px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    animation: slideIn 0.3s ease;
}

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

.alert-danger, .flash-danger {
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: var(--accent-red);
}

.alert-success, .flash-success {
    background: rgba(16, 185, 129, 0.15);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: var(--accent-green);
}

.alert-warning, .flash-warning {
    background: rgba(245, 158, 11, 0.15);
    border: 1px solid rgba(245, 158, 11, 0.3);
    color: var(--accent-yellow);
}

.alert-info, .flash-info {
    background: rgba(59, 130, 246, 0.15);
    border: 1px solid rgba(59, 130, 246, 0.3);
    color: var(--accent-blue);
}

.flash-close {
    background: none;
    border: none;
    color: inherit;
    font-size: 20px;
    cursor: pointer;
    padding: 0 0 0 10px;
    opacity: 0.7;
}

.flash-close:hover {
    opacity: 1;
}

/* Modal Overlay */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    animation: fadeIn 0.2s ease;
}

.modal-content {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    max-width: 450px;
    width: 90%;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    animation: scaleIn 0.2s ease;
}

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

@keyframes scaleIn {
    from { transform: scale(0.95); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.modal-header {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.modal-body {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-sm);
}

/* Form Elements (General) */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
}

input[type="text"],
input[type="password"],
input[type="email"],
input[type="number"],
select,
textarea {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 14px;
    transition: border-color var(--transition-fast);
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

select {
    cursor: pointer;
}

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 1024px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform var(--transition-normal);
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .page-header {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .header-actions {
        width: 100%;
        justify-content: space-between;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .content-wrapper {
        padding: var(--spacing-md);
    }
    
    .action-buttons {
        flex-direction: column;
    }
    
    .action-buttons .btn {
        width: 100%;
    }
}

/* ============================================
   Broker Integration Styles
   ============================================ */

/* Status Dot Indicator */
.status-dot {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin-right: 8px;
    animation: pulse-dot 2s infinite;
}

.status-disconnected { background: #64748b; }
.status-connecting { background: #f59e0b; }
.status-connected { background: #10b981; }
.status-error { background: #ef4444; }
.status-reconnecting { background: #3b82f6; }

@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.8); }
}

/* Broker Connect Link */
.nav-broker-connect {
    display: flex;
    align-items: center;
    gap: 5px;
    font-weight: 600 !important;
}

.nav-broker-connect .status-dot {
    width: 8px;
    height: 8px;
}

/* Broker Status Card */
#broker-status-icon {
    transition: all 0.3s ease;
}

/* Mini Stats (for broker details) */
.stat-mini {
    padding: 12px;
    background: var(--bg-primary);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.stat-mini .stat-label {
    display: block;
    font-size: 11px;
    color: var(--text-muted);
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-mini .stat-value {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
}

/* Market Watch Grid */
.market-watch-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
}

.market-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 15px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.market-card:hover {
    border-color: var(--accent-blue);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.2);
}

.market-symbol {
    font-weight: 700;
    font-size: 14px;
    margin-bottom: 5px;
}

.market-price {
    font-size: 20px;
    font-weight: 700;
    color: var(--accent-green);
}

.market-change {
    font-size: 13px;
    font-weight: 500;
}

.market-change.positive { color: var(--accent-green); }
.market-change.negative { color: var(--accent-red); }

.market-details {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 8px;
}

/* Order Book Table */
.order-book-table {
    width: 100%;
    border-collapse: collapse;
}

.order-book-table th,
.order-book-table td {
    padding: 10px 12px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    font-size: 13px;
}

.order-book-table th {
    background: var(--bg-tertiary);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 11px;
    color: var(--text-muted);
}

.order-row-pending { color: var(--accent-orange); }
.order-row-filled { color: var(--accent-green); }
.order-row-cancelled { color: var(--accent-red); text-decoration: line-through; }
.order-row-rejected { color: var(--accent-red); }