/* Основные стили */
:root {
    --sidebar-width: 200px;
    --header-height: 60px;
    --primary-color: #2c3e50;
    --secondary-color: #34495e;
    --accent-color: #3498db;
    --text-color: #ecf0f1;
    --hover-color: #3d566e;
}

body {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
    display: flex;
    min-height: 100vh;
    flex-direction: column;
}

/* Header */
.header {
    height: var(--header-height);
    background-color: var(--primary-color);
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: relative;
    z-index: 10;
}

.header-title {
    margin: 0;
    font-size: 1.2rem;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 10px;
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: var(--accent-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
}

.user-name {
    font-size: 0.9rem;
}

.login-link {
    color: var(--text-color);
    text-decoration: none;
    padding: 8px 15px;
    border-radius: 4px;
    transition: background-color 0.3s;
}

.login-link:hover {
    background-color: var(--hover-color);
}

/* Main Layout */
.main-container {
    display: flex;
    flex: 1;
}

.sidebar {
    width: var(--sidebar-width);
    background-color: var(--primary-color);
    color: white;
    box-shadow: 2px 0 5px rgba(0,0,0,0.1);
    position: relative;
}

.sidebar-header {
    padding: 15px 20px;
    border-bottom: 1px solid var(--secondary-color);
}

.sidebar-footer {
    border-top: 1px solid var(--secondary-color);
    position: absolute;
    bottom: 40px;
    width: 100%;
}

.sidebar-footer div {
    padding: 15px 20px;
}

.sidebar-footer a div {
    color: var(--text-color);
    text-decoration: none;
    transition: all 0.3s;
}

.sidebar-footer a:hover div {
    background-color: var(--hover-color);
    color: #fff;
}

.sidebar-nav {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar-nav li {
    margin: 0;
}

.sidebar-nav a {
    display: block;
    padding: 12px 20px;
    color: var(--text-color);
    text-decoration: none;
    transition: all 0.3s;
}

.sidebar-nav a:hover {
    background-color: var(--hover-color);
    color: #fff;
}

.sidebar-nav a.active {
    background-color: var(--accent-color);
    color: white;
}

.main-content {
    flex: 1;
    background-color: #f5f5f5;
    overflow-y: auto;
    height: calc(100vh - var(--header-height));
}

/* Common Components */
.spread-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem 0;
    font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

.spread-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.spread-header h1 {
    font-size: 2rem;
    font-weight: 700;
    color: #2c3e50;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin: 0;
}

.spread-header h1 small {
    font-size: 0.9rem;
    font-weight: 400;
    color: #7f8c8d;
}

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

.sort-control, .favourite-filter {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.sort-control label, .favourite-filter label {
    font-size: 0.9rem;
    color: #7f8c8d;
    min-width: 50px;
}

.favourite-filter label {
    min-width: 60px;
}

.btn-refresh {
    background-color: #3498db;
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s ease;
}

.btn-refresh:hover {
    background-color: #2980b9;
    transform: translateY(-1px);
}

.view-toggle {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.view-btn {
    background: none;
    border: 1px solid #dfe6e9;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s ease;
}

.view-btn.active {
    background-color: #3498db;
    color: white;
    border-color: #3498db;
}

.view-btn:hover:not(.active) {
    background-color: #f5f6fa;
}

/* Cards & Containers */
.coin-spread-container {
    background-color: #f8f9fa;
    padding-bottom: 2rem;
}

.coin-spread-card {
    border: none;
    border-radius: 0.5rem;
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    margin-bottom: 1.5rem;
}

.coin-spread-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.1);
}

.coin-spread-card .card-header {
    background-color: white;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    padding: 1rem 1.25rem;
    border-radius: 0.5rem 0.5rem 0 0 !important;
}

.coin-spread-card .card-body {
    padding: 1.5rem;
}

.chart-container {
    background-color: white;
    border-radius: 0.5rem;
    padding: 1rem;
    box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.05);
}

/* Form Elements */
.form-label {
    font-weight: 500;
    color: #495057;
    margin-bottom: 0.5rem;
    display: block;
}

.form-control, .form-select, .coin-spread-select {
    border-radius: 0.375rem;
    border: 1px solid #ced4da;
    padding: 0.75rem;
    width: 100%;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.coin-spread-select {
    padding: 0.5rem 1rem;
    height: auto;
}

.form-control:focus, .form-select:focus, .coin-spread-select:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 0.25rem rgba(52, 152, 219, 0.25);
    outline: none;
}

.form-switch .form-check-input {
    width: 2.5em;
    height: 1.5em;
    margin-left: 0;
}

.form-switch .form-check-input:checked {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
}

/* Login Styles */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - var(--header-height));
    background-color: #f5f5f5;
    padding: 2rem;
}

.login-card {
    background: white;
    border-radius: 0.5rem;
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
    overflow: hidden;
}

.login-header {
    padding: 2rem 2rem 1rem;
    text-align: center;
    background-color: var(--primary-color);
    color: white;
}

.login-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.login-subtitle {
    font-size: 0.875rem;
    opacity: 0.8;
    margin: 0;
}

.login-form {
    padding: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.login-button {
    width: 100%;
    padding: 0.75rem;
    font-weight: 600;
    border-radius: 0.375rem;
    background-color: var(--accent-color);
    border: none;
    transition: background-color 0.3s, transform 0.2s;
    color: white;
    cursor: pointer;
}

.login-button:hover {
    background-color: #2980b9;
    transform: translateY(-1px);
}

/* User Dropdown */
.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    padding: 5px;
    border-radius: 20px;
    transition: background-color 0.3s;
}

.user-info:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.theme-toggle {
    color: white;
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    padding: 5px 15px;
    border-radius: 20px;
    transition: background-color 0.3s;
}

.theme-toggle:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.dropdown-arrow {
    transition: transform 0.3s ease;
}

.user-dropdown {
    position: absolute;
    top: calc(var(--header-height) + 5px);
    right: 20px;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    padding: 10px 0;
    min-width: 180px;
    z-index: 100;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
}

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

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 15px;
    color: var(--primary-color);
    text-decoration: none;
    transition: background-color 0.2s;
}

.dropdown-item:hover {
    background-color: #f5f5f5;
}
.max-position-info {
    font-size: 0.9rem;
    color: #6c757d;
    margin-top: 0.9rem;
}

/* Volume Info */
.volume-info {
    font-size: 0.8rem;
    color: #6c757d;
    margin-top: 0.25rem;
}

.volume-values {
    display: flex;
    justify-content: space-between;
}

.volume-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.2rem;
}

.volume-value {
    margin-left: 0.5rem;
    font-weight: bold;
}

.table-view .volume-info {
    text-align: right;
}

.table-view .volume-values {
    justify-content: flex-end;
    gap: 1rem;
}

.spread-card .volume-info {
    margin-top: 0.5rem;
}

/* Utility Classes */
.hidden {
    display: none !important;
}

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

.spread-row, .spread-card {
    animation: fadeIn 0.3s ease forwards;
}

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

.spinner-border {
    animation: chartLoading 1.5s ease-in-out infinite;
}

/* Responsive */
@media (max-width: 768px) {
    .coin-spread-container {
        padding: 1rem;
    }
    
    .chart-container {
        height: 60vh;
        min-height: 400px;
    }
    
    .settings-card {
        margin-top: 1rem;
    }
}