:root {
    --bg-primary: #0e1621;
    --bg-secondary: #17212b;
    --bg-hover: #1f2a36;
    --text-primary: #e1e3e6;
    --text-secondary: #8e9aaf;
    --border: #242f3d;
    --accent: #2b5278;
    --accent-hover: #3e6b99;
}

[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f0f2f5;
    --bg-hover: #e4e6e9;
    --text-primary: #050505;
    --text-secondary: #65676b;
    --border: #ccd0d5;
    --accent: #0088cc;
    --accent-hover: #0077b3;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    overflow: hidden;
    height: 100vh;
    padding-bottom: constant(safe-area-inset-bottom);
    padding-bottom: env(safe-area-inset-bottom);
}

#bg-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    opacity: 0.35;
    pointer-events: none;
}

.app-layout {
    display: flex;
    height: 100%;
    width: 100%;
    position: relative;
    z-index: 1;
}

.menu-toggle-btn {
    position: fixed;
    top: calc(12px + env(safe-area-inset-top));
    left: 12px;
    z-index: 30;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 50%;
    width: 44px;
    height: 44px;
    font-size: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    transition: 0.2s;
}

    .menu-toggle-btn:hover {
        background: var(--bg-hover);
    }

.chats-panel {
    position: fixed;
    left: 0;
    top: 0;
    width: 320px;
    height: 100%;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease;
    z-index: 20;
    transform: translateX(0);
}

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

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: calc(12px + env(safe-area-inset-top)) 16px 12px 60px;
    border-bottom: 1px solid var(--border);
}

.search-container {
    padding: 8px;
    border-bottom: 1px solid var(--border);
}

    .search-container input {
        width: 100%;
        padding: 8px 12px;
        border-radius: 20px;
        border: none;
        background: var(--bg-primary);
        color: var(--text-primary);
    }

.chats-list {
    flex: 1;
    overflow-y: auto;
}

.chat-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    cursor: pointer;
    transition: background 0.1s;
    border-bottom: 1px solid var(--border);
}

    .chat-item:hover, .chat-item.active {
        background: var(--bg-hover);
    }

.chat-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: bold;
    text-transform: uppercase;
}

.chat-details {
    flex: 1;
    min-width: 0;
}

.chat-name {
    font-weight: 600;
    margin-bottom: 4px;
}

.chat-last-msg, .chat-username {
    font-size: 13px;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.chat-time {
    font-size: 11px;
    color: var(--text-secondary);
}

.chat-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--bg-primary);
    min-width: 0;
    margin-left: 320px;
    transition: margin-left 0.3s ease;
    height: 100%;
}

    .chat-panel.full-width {
        margin-left: 0;
    }

.chat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    background: var(--bg-secondary);
}

.chat-title {
    display: flex;
    flex-direction: column;
    align-items: center;
}

    .chat-title span:first-child {
        font-weight: 600;
        font-size: 16px;
    }

.chat-username {
    font-size: 12px;
    color: var(--text-secondary);
}

.icon-btn {
    background: none;
    border: none;
    font-size: 22px;
    cursor: pointer;
    color: var(--text-primary);
    padding: 4px 8px;
    border-radius: 50%;
}

    .icon-btn:hover {
        background: var(--bg-hover);
    }

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.message {
    max-width: 70%;
    padding: 8px 12px;
    border-radius: 18px;
    word-wrap: break-word;
}

    .message.outgoing {
        background: var(--accent);
        align-self: flex-end;
        color: white;
    }

    .message.incoming {
        background: var(--bg-secondary);
        align-self: flex-start;
    }

    .message .time {
        font-size: 10px;
        opacity: 0.7;
        margin-top: 4px;
        text-align: right;
    }

.chat-input-area {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    padding: 12px;
    border-top: 1px solid var(--border);
    background: var(--bg-secondary);
    flex-shrink: 0;
    padding-bottom: calc(30px + env(safe-area-inset-bottom));
}

#messageInput {
    flex: 1;
    background: var(--bg-primary);
    border: none;
    border-radius: 20px;
    padding: 10px 16px;
    color: var(--text-primary);
    resize: none;
    font-family: inherit;
    font-size: 14px;
}

.send-btn {
    background: var(--accent);
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    font-size: 20px;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

@media (max-width: 768px) {
    .chats-panel {
        width: 85%;
    }

    .chat-panel {
        margin-left: 0;
    }

    .menu-toggle-btn {
        display: flex;
    }

    #mobile-search-toggle {
        display: inline-flex;
    }

    .search-container {
        display: none;
    }

        .search-container.show {
            display: block;
        }

    .panel-header {
        padding-left: 60px;
    }

    .chat-input-area {
        padding-bottom: 10px !important;
        margin-bottom: 0 !important;
    }
}

@media (min-width: 769px) {
    .menu-toggle-btn {
        display: flex;
    }

    #mobile-search-toggle {
        display: none;
    }

    .search-container {
        display: block !important;
    }

    .chat-panel {
        margin-left: 320px;
    }

        .chat-panel.expanded {
            margin-left: 0;
        }
}

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.7);
    align-items: center;
    justify-content: center;
    z-index: 100;
}

.modal-content {
    background: var(--bg-secondary);
    border-radius: 20px;
    padding: 20px;
    min-width: 250px;
    text-align: center;
}

.empty-chats {
    padding: 40px;
    text-align: center;
    color: var(--text-secondary);
}

/* ========== Стили для админ-панели ========== */
.dashboard-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem;
}

.dashboard-title {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    border-left: 6px solid var(--accent);
    padding-left: 1rem;
}

.auth-card {
    background: var(--bg-secondary);
    border-radius: 20px;
    padding: 2rem;
    max-width: 450px;
    margin: 2rem auto;
    text-align: center;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.admin-login-form input {
    width: 100%;
    padding: 10px;
    margin: 10px 0;
    border-radius: 40px;
    border: 1px solid var(--border);
    background: var(--bg-primary);
    color: var(--text-primary);
}

.admin-login-form button {
    background: var(--accent);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 40px;
    cursor: pointer;
    width: 100%;
}

.admin-actions {
    margin-bottom: 2rem;
    text-align: right;
}

.logout-admin-btn {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    padding: 6px 14px;
    border-radius: 40px;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: 0.2s;
}

    .logout-admin-btn:hover {
        background: var(--accent);
        color: white;
    }

.users-section, .logs-section {
    margin-bottom: 2.5rem;
}

    .users-section h3, .logs-section h3 {
        margin-bottom: 1rem;
        font-size: 1.4rem;
    }

.table-responsive {
    overflow-x: auto;
    border-radius: 16px;
    border: 1px solid var(--border);
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-secondary);
    font-size: 0.9rem;
}

    .admin-table th,
    .admin-table td {
        padding: 12px 10px;
        border-bottom: 1px solid var(--border);
        text-align: left;
        vertical-align: middle;
    }

    .admin-table th {
        background: var(--bg-hover);
        font-weight: 600;
    }

    .admin-table tr:hover {
        background: var(--bg-hover);
    }

    .admin-table input,
    .admin-table select {
        background: var(--bg-primary);
        border: 1px solid var(--border);
        border-radius: 20px;
        padding: 6px 10px;
        color: var(--text-primary);
        width: 100%;
        min-width: 120px;
    }

    .admin-table .action-buttons {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
        align-items: center;
    }

    .admin-table button {
        border: none;
        border-radius: 20px;
        padding: 6px 12px;
        cursor: pointer;
        font-size: 0.8rem;
        transition: 0.2s;
    }

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

.disable-btn {
    background: #c42e2e;
    color: white;
}

    .save-btn:hover, .disable-btn:hover {
        opacity: 0.85;
    }

.center {
    text-align: center;
}

.logs-table {
    font-size: 0.85rem;
}

    .logs-table td, .logs-table th {
        padding: 8px 10px;
    }

.error-msg {
    color: #ff6b6b;
    margin-top: 12px;
}

.unread-badge {
    background: var(--accent);
    color: white;
    border-radius: 20px;
    padding: 2px 8px;
    font-size: 12px;
    margin-left: 8px;
}

/* Toast уведомления */
.toast-container {
    position: fixed;
    bottom: 20px;
    left: 20px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.toast {
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: 12px 16px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
    border-left: 4px solid var(--accent);
    max-width: 300px;
    animation: slideIn 0.2s ease-out;
}
@keyframes slideIn {
    from { transform: translateX(-100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}
/* Стили админки */
.admin-btn {
    display: inline-block;
    background: var(--accent);
    color: white;
    padding: 8px 16px;
    border-radius: 40px;
    text-decoration: none;
    margin-right: 10px;
}
.edit-user-form {
    max-width: 500px;
    background: var(--bg-secondary);
    padding: 20px;
    border-radius: 20px;
}
.form-group {
    margin-bottom: 15px;
}
.form-group label {
    display: block;
    margin-bottom: 5px;
}
.form-group input, .form-group textarea, .settings-input {
    width: 100%;
    padding: 8px;
    border-radius: 20px;
    border: 1px solid var(--border);
    background: var(--bg-primary);
    color: var(--text-primary);
}
.form-group.checkbox {
    display: flex;
    align-items: center;
}
.form-group.checkbox label {
    margin-left: 8px;
}
.settings-container {
    max-width: 500px;
    margin: 2rem auto;
}
.settings-card {
    background: var(--bg-secondary);
    padding: 20px;
    border-radius: 20px;
    margin-bottom: 20px;
}