/* =================================
   1. Основные стили и переменные
   ================================= */
:root {
    --bg-color: #0D1117;
    --card-bg-color: #161B22;
    --text-color: #E6EDF3;
    --text-secondary-color: #8b949e;
    --accent-color: #00FFA3;
    --accent-color-2: #8A2BE2;
    --green-color: #2ECC71;
    --red-color: #E74C3C;
    --border-color: #30363d;
}

/* <<< ГЛОБАЛЬНЫЙ FIX ДЛЯ ВСЕХ ПРОБЛЕМ С ШИРИНОЙ >>> */
html {
  box-sizing: border-box;
}
*, *:before, *:after {
  box-sizing: inherit;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: 'Inter', sans-serif;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

main {
    flex-grow: 1;
}

h2 {
    margin-top: 0;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 15px;
    margin-bottom: 20px;
    font-size: 1.3em;
}

/* =================================
   2. Шапка (Header)
   ================================= */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 30px;
    background-color: var(--card-bg-color);
    border-bottom: 1px solid var(--border-color);
    position: relative;
    z-index: 100;
}
header .logo { font-size: 1.5em; font-weight: 700; }

.desktop-nav {
    display: flex;
}
.desktop-user-menu {
    display: flex;
}

header nav a {
    color: var(--text-color); text-decoration: none;
    margin: 0 15px; font-size: 1em; transition: color 0.3s ease;
}
header nav a:hover { color: var(--accent-color); }

.user-menu {
    display: flex;
    align-items: center;
    gap: 15px;
}
.user-menu a {
    padding: 8px 15px; border-radius: 5px; text-decoration: none;
    font-weight: 500; transition: all 0.2s ease-in-out;
    border: 1px solid transparent; display: inline-block;
}
.logo-link {
    text-decoration: none;
    color: inherit;
}
/* Стили для кнопок входа/регистрации */
.btn-login {
    border-color: var(--accent-color);
    color: var(--accent-color);
}
.btn-login:hover {
    background-color: var(--accent-color);
    color: #000;
}
.btn-register {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
    color: #000;
}

/* Стили для кнопок залогиненного пользователя */
.btn-account {
    border-color: #ccc; /* Серая рамка */
    color: #fff;       /* Белый текст */
    background-color: transparent;
    transition: background-color 0.2s, color 0.2s;
}

.btn-account:hover {
    background-color: #fff; /* Белый фон при наведении */
    color: #1a1a1a;        /* Темный текст при наведении */
}


/* Красная кнопка "Выход" (акцент на действии) */
.btn-logout {
    border-color: #ccc; /* Серая рамка */
    color: #fff;       /* Белый текст */
    background-color: transparent;
    transition: background-color 0.2s, color 0.2s;
}

.btn-logout:hover {
    background-color: #fff; /* Белый фон при наведении */
    color: #1a1a1a;        /* Темный текст при наведении */
}
/* <<< ИСПРАВЛЕНИЕ ВЫПАДАЮЩЕГО СПИСКА ЯЗЫКОВ >>> */
.language-switcher-wrapper {
    position: relative;
    padding: 15px 0;
    margin: -15px 0;
}
.language-switcher {
    position: static;
}
.current-lang-link img {
    width: 28px;
    height: auto;
    display: block;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    transition: transform 0.2s;
    cursor: pointer;
}
.lang-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    background-color: var(--card-bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    list-style: none;
    padding: 8px;
    margin: 0;
    z-index: 1010;
    width: max-content;
    box-shadow: 0 8px 20px rgba(0,0,0,0.4);
}
.language-switcher-wrapper:hover .lang-dropdown {
    display: block;
}
.language-switcher-wrapper:hover .current-lang-link img {
    transform: scale(1.1);
    border-color: var(--accent-color);
}
.lang-dropdown li a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 15px;
    color: var(--text-color);
    text-decoration: none;
    border-radius: 6px;
    white-space: nowrap;
}
.lang-dropdown li a:hover {
    background-color: var(--accent-color-2);
}
.lang-dropdown li a.active {
    background-color: #2c3e50;
    font-weight: bold;
}
.lang-dropdown li img {
    width: 24px;
    height: auto;
    border-radius: 3px;
}

/* =================================
   3. Терминал (Главная страница)
   ================================= */
.terminal-container {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 30px;
    max-width: 1600px;
    margin: 40px auto;
    padding: 0 20px;
}

/* Левая колонка: Стакан */
.order-book-card {
    background-color: var(--card-bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    align-self: start;
}
.order-book-card h2 { font-size: 1.2em; text-align: center; margin-bottom: 15px; }
#order-book-table { width: 100%; border-collapse: collapse; font-family: 'Courier New', monospace; font-size: 0.9em; }
#order-book-table th { font-weight: 500; color: var(--text-secondary-color); text-align: left; padding-bottom: 8px; }
#order-book-table th:last-child { text-align: right; }
#order-book-table td { padding: 4px 5px; }
#order-book-asks td:first-child { color: var(--red-color); }
#order-book-bids td:first-child { color: var(--green-color); }
#order-book-table td:last-child { text-align: right; color: var(--text-secondary-color); }
.spread-row td {
    padding: 10px 5px !important; border-top: 1px solid var(--border-color); border-bottom: 1px solid var(--border-color);
    font-weight: 700; text-align: center !important; color: var(--text-color) !important;
}

/* Правая колонка: Арена */
.comparison-arena { display: flex; flex-direction: column; gap: 25px; }
.top-bar { width: 100%; }
.asset-selector { margin-bottom: 0; }
#asset-select {
    padding: 10px;
    background-color: var(--card-bg-color);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 1em;
}

#comparison-cards-container { display: flex; justify-content: center; gap: 25px; flex-wrap: wrap; min-height: 140px; }
.exchange-card {
    width: 320px; flex-shrink: 0; background-color: var(--card-bg-color); border: 1px solid var(--border-color);
    border-radius: 8px; padding: 20px; display: flex; flex-direction: column; gap: 15px;
}
.exchange-card-header { display: flex; align-items: center; gap: 10px; border-bottom: 1px solid var(--border-color); padding-bottom: 10px; }
.exchange-card-header .exchange-logo {
    width: 30px; height: 30px; border-radius: 4px; object-fit: contain;
    background-color: rgba(255, 255, 255, 0.95);
    padding: 5px;
    box-sizing: border-box;
}
.exchange-card-header h3 { margin: 0; font-size: 1.2em; }
.price-row { display: flex; justify-content: space-between; align-items: center; }
.price-label { color: var(--text-secondary-color); }
.price-value { font-size: 1.4em; font-weight: 500; }
.price-value.buy { color: var(--green-color); }
.price-value.sell { color: var(--red-color); }

/* Панель выбора бирж */
.add-exchange-panel {
    background-color: var(--card-bg-color); border: 1px solid var(--border-color);
    border-radius: 8px; padding: 25px; width: 100%; box-sizing: border-box;
}
.add-exchange-panel .panel-title { text-align: center; font-size: 1.2em; font-weight: 500; margin-bottom: 20px; }
#exchange-logo-gallery { display: flex; justify-content: center; align-items: center; gap: 15px; flex-wrap: wrap; }
.logo-selector {
    padding: 10px; border: 2px solid var(--border-color); border-radius: 6px; cursor: pointer;
    transition: all 0.2s ease;
    background-color: rgba(255, 255, 255, 0.95);
}
.logo-selector:hover { border-color: var(--accent-color-2); transform: translateY(-2px); }
.logo-selector img { height: 30px; width: 90px; object-fit: contain; display: block; }
.logo-selector.selected { border-color: var(--accent-color); box-shadow: 0 0 8px var(--accent-color); transform: scale(1.05); }

.exchange-card {
    position: relative;
}

.close-card-btn {
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 24px;
    font-weight: bold;
    color: var(--text-secondary-color);
    cursor: pointer;
    line-height: 1;
    transition: color 0.2s, transform 0.2s;
}

.close-card-btn:hover {
    color: var(--red-color);
    transform: scale(1.2);
}

/* Калькулятор арбитража */
#arbitrage-calculator { display: none; }
.arbitrage-card {
    background: linear-gradient(145deg, #1a237e, #8A2BE2);
    border: 1px solid var(--accent-color-2); padding: 25px; color: #fff;
    box-shadow: 0 4px 20px rgba(138, 43, 226, 0.3);
}
.arbitrage-card .card-header { display: flex; align-items: center; gap: 10px; margin-bottom: 20px; border-bottom: 1px solid rgba(255, 255, 255, 0.2); padding-bottom: 15px; }
.arbitrage-card .icon { font-size: 1.8em; }
.arbitrage-card h3 { margin: 0; font-size: 1.3em; font-weight: 500; }
.calculator-body { display: flex; flex-direction: column; gap: 20px; }
.path-info { display: flex; justify-content: space-around; align-items: center; gap: 15px; }
.path-step { display: flex; flex-direction: column; align-items: center; text-align: center; background: rgba(0, 0, 0, 0.2); padding: 15px; border-radius: 6px; flex-grow: 1; }
.path-label { font-size: 0.9em; color: #c9d1d9; margin-bottom: 5px; }
.exchange-name { font-weight: bold; font-size: 1.1em; margin-bottom: 8px; }
.path-info .price-value { font-size: 1.5em; font-weight: bold; }
.arrow { font-size: 2.5em; font-weight: bold; color: var(--accent-color); }
.profit-calculation {
    display: flex; flex-direction: column; align-items: stretch; gap: 15px;
    background-color: rgba(0, 0, 0, 0.3); padding: 15px; border-radius: 6px; margin-top: 10px;
}
.profit-line { display: flex; justify-content: space-between; align-items: baseline; }
.profit-line.total-profit { border-top: 1px solid rgba(255, 255, 255, 0.2); padding-top: 15px; }
.profit-value { font-size: 1.4em; font-weight: bold; color: var(--accent-color); }
.profit-value.total { font-size: 1.8em; }
.profit-percentage { font-size: 1.1em; color: var(--green-color); }
.volume-input-section { padding: 15px; background: rgba(0, 0, 0, 0.2); border-radius: 6px; margin-top: 5px; }
.volume-input-section .form-group { margin-bottom: 0; }

/* Стили для кнопок быстрых сумм */
.quick-amount-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 15px;
    padding: 0 15px;
}
.btn-quick-amount {
    flex-grow: 1;
    padding: 8px;
    font-size: 0.9em;
    background-color: rgba(0, 0, 0, 0.2);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.2s ease;
}
.btn-quick-amount:hover:not(.disabled) {
    background-color: rgba(0, 0, 0, 0.4);
    border-color: var(--accent-color);
}
.btn-quick-amount.disabled {
    background-color: #3a3d54;
    color: #6d7087;
    border-color: #3a3d54;
    cursor: not-allowed;
}
.btn-quick-amount.shake-error {
    animation: shake-animation 0.5s;
    box-shadow: 0 0 0 2px rgba(231, 76, 60, 0.7);
}
@keyframes shake-animation {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-5px); }
  50% { transform: translateX(5px); }
  75% { transform: translateX(-5px); }
}

/* =================================
   4. Стили для ошибок и плейсхолдеров
   ================================= */
.error-placeholder {
    color: var(--red-color); text-align: center; padding: 20px; font-size: 0.9em;
    width: 100%; height: 100%; display: flex; justify-content: center; align-items: center;
}
.placeholder-text, .loading-placeholder {
    width: 100%; text-align: center; color: var(--text-secondary-color); padding: 40px 0;
}

/* =================================
   5. Общие стили для других страниц
   ================================= */
.page-container, .auth-container {
    max-width: 900px; margin: 50px auto; padding: 30px;
    background-color: var(--card-bg-color); border: 1px solid var(--border-color); border-radius: 8px;
}
.auth-container { max-width: 450px; }
.auth-switch { text-align: center; margin-top: 20px; }
.auth-switch a { color: var(--accent-color); text-decoration: none; }

.card {
    background-color: var(--card-bg-color); border: 1px solid var(--border-color);
    border-radius: 8px; padding: 20px; margin-top: 25px;
}
.card h3 {
    margin-top: 0; border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px; margin-bottom: 20px;
}

.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 5px; color: var(--text-secondary-color); }
.form-group input, .form-group select {
    width: 100%;
    padding: 10px;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 5px;
    color: var(--text-color);
    font-size: 1em;
}

.btn-main {
    width: 100%; padding: 12px; background-color: var(--accent-color); color: #000;
    border: none; border-radius: 5px; font-size: 1.1em; font-weight: 700; cursor: pointer;
    transition: transform 0.2s;
}
.btn-main:hover { transform: scale(1.02); }

.wallet-actions {
    display: flex;
    gap: 15px;
    margin-top: 30px;
}
.wallet-actions .btn-main,
.wallet-actions .btn-secondary {
    flex-grow: 1;
    width: auto;
    text-align: center;
}
.btn-secondary {
    width: 100%; padding: 12px; background-color: transparent; color: var(--text-color);
    border: 1px solid var(--border-color); border-radius: 5px; font-size: 1.1em;
    font-weight: 700; cursor: pointer; transition: all 0.2s ease-in-out;
}
.btn-secondary:hover { background-color: var(--card-bg-color); border-color: var(--text-color); }
.message { padding: 15px; border-radius: 5px; text-align: center; }
.message.success { background-color: rgba(46, 160, 67, 0.15); color: var(--green-color); }
.message.error { background-color: rgba(248, 81, 73, 0.15); color: var(--red-color); }

.wallet-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 30px;
}
.wallet-card {
    min-width: 120px;
    flex-grow: 1;
}
.modal-overlay {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background-color: rgba(0, 0, 0, 0.7); display: none;
    justify-content: center; align-items: center; z-index: 1000;
}
.modal-content {
    background-color: var(--card-bg-color); padding: 30px;
    border-radius: 8px; width: 90%; max-width: 450px; position: relative;
}
.modal-close { position: absolute; top: 10px; right: 20px; font-size: 2em; color: #fff; cursor: pointer; }
.modal-info { background-color: var(--bg-color); padding: 10px; border-radius: 5px; margin-bottom: 20px; border: 1px solid var(--border-color); }
footer {
    padding: 25px 0; text-align: center; color: var(--text-secondary-color);
    margin-top: 40px; border-top: 1px solid var(--border-color);
}
.active-requests-section { margin-top: 40px; }
.active-requests-section h3 { border-bottom: 1px solid var(--border-color); padding-bottom: 10px; }
.request-item, .history-item {
    display: flex; justify-content: space-between; align-items: center; padding: 15px 10px; border-bottom: 1px solid var(--border-color);
}
.request-info span, .history-info span { display: block; }
.request-info .type, .history-info .type { font-weight: bold; }
.request-info .date, .history-info .date { font-size: 0.8em; color: var(--text-secondary-color); }
.request-status, .history-status {
    padding: 5px 12px; border-radius: 15px; font-size: 0.9em; font-weight: bold;
}
.table-wrapper { overflow-x: auto; }
.history-table-trades {
    width: 100%; border-collapse: collapse; margin-top: 20px; font-size: 0.9em;
}
.history-table-trades th, .history-table-trades td {
    padding: 10px 12px; border-bottom: 1px solid var(--border-color);
    text-align: left; white-space: nowrap;
}
.history-table-trades th { background-color: var(--card-bg-color); font-weight: 500; color: var(--text-secondary-color); }
.history-table-trades .profit-cell { color: var(--green-color); font-weight: bold; }
.status-completed { background-color: rgba(34, 197, 94, 0.2); color: #22c55e; }
.status-cancelled { background-color: rgba(239, 68, 68, 0.2); color: #ef4444; }
.status-processing { background-color: rgba(234, 179, 8, 0.1); color: #eab308; }
.info-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 20px; }
.info-item .label { display: block; font-size: 0.9em; color: var(--text-secondary-color); margin-bottom: 5px; }
.info-item .value { font-weight: 500; }
#login-history-list .history-entry {
    display: flex; justify-content: space-between; padding: 10px 0; border-bottom: 1px solid var(--border-color); font-size: 0.9em;
}
#toast-container {
    position: fixed; bottom: 20px; right: 20px; z-index: 2000;
    display: flex; flex-direction: column; gap: 10px;
}
.toast {
    background-color: var(--card-bg-color); color: var(--text-color); padding: 15px 20px;
    border-radius: 6px; border-left: 4px solid var(--accent-color);
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
    animation: slideInAndOut 4s ease forwards;
}
.toast-notification {
    position: fixed;
    bottom: 25px;
    right: 25px;
    background-color: #2d343e;
    color: #eaf0f6;
    padding: 16px 20px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    z-index: 1050;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.3s ease, transform 0.3s ease;
    min-width: 250px;
    font-size: 14px;
    border-left: 5px solid var(--green-color);
}
.toast-notification.error { border-left-color: var(--red-color); }
.toast-notification.warning { border-left-color: #ffc107; }
.toast-notification.show {
    opacity: 1;
    transform: translateY(0);
}
@keyframes slideInAndOut {
    0%, 100% { opacity: 0; transform: translateX(100%); }
    20%, 80% { opacity: 1; transform: translateX(0); }
}

/* =================================
   6. Адаптивное меню (Мобильная версия)
   ================================= */
.menu-toggle {
    display: none;
    width: 30px;
    height: 22px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    position: relative;
    z-index: 1010;
}
.menu-toggle span {
    display: block;
    width: 100%;
    height: 3px;
    background-color: var(--text-color);
    border-radius: 3px;
    position: absolute;
    left: 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
}
.menu-toggle span:nth-child(1) { top: 0; }
.menu-toggle span:nth-child(2) { top: 50%; transform: translateY(-50%); }
.menu-toggle span:nth-child(3) { bottom: 0; }

.menu-toggle.active span:nth-child(1) { transform: translateY(9.5px) rotate(45deg); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: translateY(-9.5px) rotate(-45deg); }

.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background-color: var(--card-bg-color);
    padding: 80px 30px 30px;
    box-shadow: -5px 0 15px rgba(0,0,0,0.2);
    transition: right 0.4s ease-in-out;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 30px;
    overflow-y: auto;
}
.mobile-menu.active {
    right: 0;
}
.mobile-menu nav,
.mobile-menu .user-menu {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
    width: 100%;
}
.mobile-menu .language-switcher-wrapper {
    position: static;
    padding: 0;
    margin: 0;
}
.mobile-menu .lang-dropdown {
    position: static;
    display: block;
    border: none;
    box-shadow: none;
    background: transparent;
    padding: 0;
    margin-top: 10px;
}

body.menu-open {
    overflow: hidden;
}

/* =================================
   7. Медиа-запросы для адаптивности
   ================================= */
@media (max-width: 900px) {
    .desktop-nav,
    .desktop-user-menu {
        display: none;
    }
    .menu-toggle {
        display: block;
    }
    .terminal-container { 
        grid-template-columns: 1fr; 
        padding: 0 15px;
    }
    .order-book-card { 
        order: 2; 
    }
    header {
        padding: 15px 20px;
    }
}

@media (max-width: 768px) {
    .path-info { flex-direction: column; }
    .arrow { transform: rotate(90deg); }
}