:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #93c5fd;
    --secondary: #f43f5e;
    --secondary-dark: #e11d48;
    --secondary-light: #fda4af;
    --neutral: #f8fafc;
    --neutral-dark: #e2e8f0;
    --text: #1e293b;
    --text-light: #64748b;
    --success: #10b981;
    --success-dark: #059669;
    --warning: #f59e0b;
    --warning-dark: #d97706;
    --danger: #ef4444;
    --danger-dark: #dc2626;
    --sidebar-width: 280px;
    --header-height: 70px;
    --card-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1);
    --card-shadow-hover: 0 20px 40px -10px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --border-radius: 12px;
    --sidebar-bg: #1e293b;
    --sidebar-text: #f1f5f9;
    --gradient-primary: linear-gradient(135deg, var(--primary), var(--primary-dark));
    --gradient-secondary: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: #f1f5f9;
    color: var(--text);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    font-weight: 400;
}

/* Header Styles */
header {
    background: var(--gradient-primary);
    color: white;
    height: var(--header-height);
    padding: 0 24px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    font-size: 22px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 12px;
    letter-spacing: -0.5px;
}

.logo i {
    font-size: 26px;
    background: rgba(255, 255, 255, 0.2);
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(5px);
}

.user-menu {
    position: relative;
}

.user-btn {
    background: rgba(255, 255, 255, 0.15);
    border: none;
    color: white;
    padding: 10px 16px;
    border-radius: 10px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: var(--transition);
    font-weight: 500;
    backdrop-filter: blur(5px);
}

.user-btn:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
}

.user-dropdown {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
    width: 220px;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    z-index: 101;
}

.user-dropdown.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    padding: 14px 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text);
    text-decoration: none;
    transition: var(--transition);
    font-size: 14px;
    font-weight: 500;
}

.dropdown-item:hover {
    background-color: var(--neutral);
    padding-left: 20px;
}

.dropdown-divider {
    height: 1px;
    background-color: var(--neutral-dark);
    margin: 5px 0;
}

/* Main Layout */
.main-container {
    display: flex;
    margin-top: var(--header-height);
    flex: 1;
}

.sidebar {
    width: var(--sidebar-width);
    background: var(--sidebar-bg);
    height: calc(100vh - var(--header-height));
    position: fixed;
    left: 0;
    overflow-y: auto;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
    z-index: 90;
    padding: 20px 0;
    color: var(--sidebar-text);
}

.sidebar-content {
    padding: 0 20px;
}

.sidebar-menu {
    list-style: none;
    margin-top: 20px;
}

.menu-item {
    margin-bottom: 8px;
}

.menu-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: var(--sidebar-text);
    text-decoration: none;
    border-radius: 8px;
    transition: var(--transition);
    font-weight: 500;
}

.menu-link:hover, .menu-link.active {
    background: rgba(255, 255, 255, 0.1);
    transform: translateX(5px);
}

.menu-link i {
    width: 20px;
    text-align: center;
}

.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 30px;
    transition: var(--transition);
}

.sidebar-collapsed .sidebar {
    transform: translateX(-100%);
}

.sidebar-collapsed .main-content {
    margin-left: 0;
}

.toggle-sidebar {
    position: fixed;
    bottom: 20px;
    left: 20px;
    z-index: 1000;
    background: var(--primary);
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: var(--card-shadow);
    cursor: pointer;
    transition: var(--transition);
    font-size: 16px;
}

.toggle-sidebar:hover {
    background: var(--primary-dark);
    transform: scale(1.1);
}

/* Показываем кнопку только на мобильных устройствах */
@media (max-width: 768px) {
    .toggle-sidebar {
        display: flex;
    }
    
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.active {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
}

/* Card Styles */
.card {
    background: white;
    border-radius: var(--border-radius);
    padding: 24px;
    box-shadow: var(--card-shadow);
    margin-bottom: 24px;
    transition: var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.card:hover {
    box-shadow: var(--card-shadow-hover);
    transform: translateY(-5px);
}

.card-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text);
    padding-bottom: 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--neutral-dark);
}

.card-title .actions {
    display: flex;
    gap: 8px;
}

.btn-icon {
    background: var(--neutral);
    border: none;
    width: 36px;
    height: 36px;
    border-radius: 8px;
    color: var(--text-light);
    cursor: pointer;
    font-size: 16px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

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

/* Form Elements */
.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text);
    font-size: 14px;
}

select, input, button, textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--neutral-dark);
    border-radius: 8px;
    font-size: 14px;
    transition: var(--transition);
}

select:focus, input:focus, textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

button {
    background-color: var(--primary);
    color: white;
    border: none;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
    padding: 12px 24px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

button:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
}

.btn-analysis {
    background-color: var(--success);
}

.btn-analysis:hover {
    background-color: var(--success-dark);
}

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

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

/* Instrument Grid */
.instrument-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 12px;
    margin-top: 16px;
}

.instrument-item {
    background-color: var(--neutral);
    padding: 16px;
    border-radius: 8px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid transparent;
}

.instrument-item:hover {
    background-color: var(--primary-light);
    transform: translateY(-3px);
    border-color: var(--primary);
}

.instrument-item.active {
    background-color: var(--primary);
    color: white;
    box-shadow: 0 10px 20px -10px var(--primary);
}

/* Chart */
.chart-container {
    position: relative;
    height: 400px;
    margin-bottom: 24px;
    border-radius: var(--border-radius);
    overflow: hidden;
    background: white;
    box-shadow: var(--card-shadow);
}

/* Analysis Results */
.analysis-result {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
    margin-top: 24px;
}

.result-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 20px;
    box-shadow: var(--card-shadow);
    text-align: center;
    transition: var(--transition);
}

.result-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--card-shadow-hover);
}

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

.trend-bearish {
    border-left: 4px solid var(--danger);
}

.trend-neutral {
    border-left: 4px solid var(--warning);
}

.result-value {
    font-size: 24px;
    font-weight: 700;
    margin: 16px 0;
}

.signal-bullish {
    color: var(--success);
}

.signal-bearish {
    color: var(--danger);
}

.signal-neutral {
    color: var(--warning);
}

/* Indicators */
.indicator-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 16px;
    margin-top: 20px;
}

.indicator-item {
    background-color: var(--neutral);
    padding: 16px;
    border-radius: 8px;
    text-align: center;
    transition: var(--transition);
}

.indicator-item:hover {
    background-color: white;
    box-shadow: var(--card-shadow);
}

.indicator-value {
    font-weight: 700;
    font-size: 18px;
    margin-top: 8px;
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin-bottom: 24px;
}

.dashboard-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 24px;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
}

.dashboard-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--card-shadow-hover);
}

.stat-value {
    font-size: 28px;
    font-weight: 700;
    margin: 12px 0;
    color: var(--primary);
}

.stat-label {
    color: var(--text-light);
    font-size: 14px;
    font-weight: 500;
}

/* Notification */
.notification {
    position: fixed;
    top: 90px;
    right: 24px;
    padding: 16px 24px;
    border-radius: var(--border-radius);
    color: white;
    opacity: 0;
    transform: translateX(100px);
    transition: var(--transition);
    z-index: 1000;
    box-shadow: var(--card-shadow);
    display: flex;
    align-items: center;
    gap: 12px;
}

.notification.show {
    opacity: 1;
    transform: translateX(0);
}

.notification.success {
    background: var(--success);
}

.notification.error {
    background: var(--danger);
}

.notification.info {
    background: var(--primary);
}

/* Loader */
.loader {
    display: none;
    text-align: center;
    padding: 40px 20px;
}

.loader-spinner {
    border: 3px solid var(--neutral);
    border-top: 3px solid var(--primary);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Responsive */
@media (max-width: 992px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .sidebar.show {
        transform: translateX(0);
    }
    
    .toggle-sidebar {
        display: flex;
    }
    
    .analysis-result {
        grid-template-columns: 1fr;
    }
    
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .instrument-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .indicator-grid {
        grid-template-columns: 1fr;
    }
    
    .main-content {
        padding: 20px;
    }
}

/* Dark mode */
.dark-mode {
    --neutral: #1e293b;
    --neutral-dark: #334155;
    --text: #f1f5f9;
    --text-light: #94a3b8;
    background-color: #0f172a;
    color: var(--text);
}

.dark-mode .card,
.dark-mode .dashboard-card,
.dark-mode .result-card,
.dark-mode .indicator-item,
.dark-mode .pattern-item {
    background-color: #1e293b;
    color: var(--text);
    border-color: rgba(255, 255, 255, 0.05);
}

.dark-mode .instrument-item {
    background-color: #334155;
    color: var(--text);
}

.dark-mode .instrument-item:hover {
    background-color: #475569;
}

.dark-mode .user-dropdown {
    background-color: #1e293b;
}

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

.dark-mode .dropdown-item:hover {
    background-color: #334155;
}

.dark-mode .dropdown-divider {
    background-color: #475569;
}

.dark-mode select,
.dark-mode input,
.dark-mode textarea {
    background-color: #1e293b;
    color: var(--text);
    border-color: #334155;
}

.dark-mode .btn-icon {
    background-color: #334155;
}

/* Additional improvements */
.section-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 12px;
}

.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.badge-success {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--success);
}

.badge-warning {
    background-color: rgba(245, 158, 11, 0.1);
    color: var(--warning);
}

.badge-danger {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--danger);
}

.divider {
    height: 1px;
    background-color: var(--neutral-dark);
    margin: 24px 0;
}

/* Animation for cards appearing */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

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

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

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

.dark-mode ::-webkit-scrollbar-track {
    background: #1e293b;
}

.dark-mode ::-webkit-scrollbar-thumb {
    background: #475569;
}

.dark-mode ::-webkit-scrollbar-thumb:hover {
    background: #64748b;
}