/* Светлая тема в стиле Claude.ai */
:root {
    /* Основные цвета Claude */
    --bg-primary: #ffffff;
    --bg-secondary: #f7f7f8;
    --bg-tertiary: #ececf1;
    --border-color: #d9d9e3;
    --text-primary: #353740;
    --text-secondary: #6e6e80;
    --accent-color: #1a1a1a;
    --accent-hover: #2d2d2d;
    --danger-color: #ef4146;
    --success-color: #1a1a1a;
    --warning-color: #f5a623;
    
    /* Дополнительные */
    --sidebar-bg: #f7f7f8;
    --chat-bg: #ffffff;
    --input-bg: #ffffff;
    --message-user-bg: #f7f7f8;
    --message-assistant-bg: #ffffff;
    --shadow-light: rgba(0, 0, 0, 0.05);
    --shadow-medium: rgba(0, 0, 0, 0.1);
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    height: 100vh;
    overflow: hidden;
    margin: 0;
    font-size: 16px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.app {
    display: flex;
    height: 100vh;
    background-color: var(--chat-bg);
}

/* ===== SIDEBAR ===== */
.sidebar {
    width: 260px;
    background-color: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    transition: width 0.3s ease;
    box-shadow: 1px 0 0 var(--shadow-light);
}

.right-sidebar {
    border-right: none;
    border-left: 1px solid var(--border-color);
    box-shadow: -1px 0 0 var(--shadow-light);
}

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

.sidebar-header h2 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-primary);
}

.new-chat-btn {
    width: 100%;
    padding: 10px 12px;
    background-color: var(--accent-color);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.2s ease;
    box-shadow: 0 1px 3px var(--shadow-light);
}

.new-chat-btn:hover {
    background-color: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 2px 5px var(--shadow-medium);
}

.chat-history {
    flex: 1;
    overflow-y: auto;
    padding: 12px;
}

.chat-item {
    padding: 12px 14px;
    margin-bottom: 6px;
    background-color: transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 14px;
    font-weight: 400;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: all 0.2s ease;
    border: 1px solid transparent;
    color: var(--text-primary);
}

.chat-item:hover {
    background-color: var(--bg-tertiary);
    border-color: var(--border-color);
}

.chat-item.active {
    background-color: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}

.sidebar-footer {
    padding: 20px;
    border-top: 1px solid var(--border-color);
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    font-size: 14px;
    color: var(--text-secondary);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--warning-color);
}

.status-dot.online {
    background-color: var(--success-color);
}

.status-dot.offline {
    background-color: var(--danger-color);
}

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

.model-item {
    padding: 6px 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 12px;
}

/* ===== CHAT CONTAINER ===== */
.chat-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--chat-bg);
}

.chat-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--bg-secondary);
}

.chat-header h1 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
}

.model-selector select {
    background-color: var(--input-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    cursor: pointer;
    font-family: inherit;
    outline: none;
    transition: border-color 0.2s;
}

.model-selector select:focus {
    border-color: var(--accent-color);
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 24px;
    background-color: var(--chat-bg);
}

.welcome-message {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.welcome-message h2 {
    margin-bottom: 20px;
    color: var(--text-primary);
    font-size: 28px;
    font-weight: 600;
}

.welcome-message p {
    margin-bottom: 16px;
    font-size: 16px;
    line-height: 1.6;
}

.welcome-message ul {
    list-style: none;
    margin-top: 24px;
    text-align: left;
    display: inline-block;
}

.welcome-message li {
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 15px;
}

.message {
    max-width: 85%;
    padding: 20px 24px;
    border-radius: var(--radius-lg);
    line-height: 1.6;
    font-size: 16px;
    box-shadow: 0 1px 3px var(--shadow-light);
    border: 1px solid transparent;
}

.message.user {
    align-self: flex-end;
    background-color: var(--message-user-bg);
    border-color: var(--border-color);
    color: var(--text-primary);
}

.message.assistant {
    align-self: flex-start;
    background-color: var(--message-assistant-bg);
    border-color: var(--border-color);
    color: var(--text-primary);
}

.message.system {
    align-self: center;
    background-color: var(--bg-secondary);
    font-style: italic;
    font-size: 14px;
    color: var(--text-secondary);
    border: 1px dashed var(--border-color);
}

.message-content {
    white-space: pre-wrap;
    word-wrap: break-word;
    font-size: 16px;
    line-height: 1.6;
}

.message-time {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 10px;
    text-align: right;
}

/* ===== INPUT AREA ===== */
.chat-input-area {
    padding: 20px 24px;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
}

.input-wrapper {
    display: flex;
    gap: 12px;
    align-items: flex-end;
}

textarea#message-input {
    flex: 1;
    background-color: var(--input-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 16px 20px;
    font-size: 16px;
    resize: none;
    min-height: 56px;
    max-height: 200px;
    font-family: inherit;
    outline: none;
    line-height: 1.5;
    transition: all 0.2s ease;
    box-shadow: 0 1px 3px var(--shadow-light);
}

textarea#message-input:focus {
    border-color: var(--accent-color);
    box-shadow: 0 2px 8px var(--shadow-medium);
}

textarea#message-input::placeholder {
    color: var(--text-secondary);
}

#send-btn {
    background-color: var(--accent-color);
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    width: 56px;
    height: 56px;
    cursor: pointer;
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    box-shadow: 0 1px 3px var(--shadow-light);
}

#send-btn:hover:not(:disabled) {
    background-color: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 2px 5px var(--shadow-medium);
}

#send-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

.file-upload {
    margin-bottom: 12px;
}

.file-btn {
    background-color: var(--input-bg);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    transition: all 0.2s;
}

.file-btn:hover {
    background-color: var(--bg-tertiary);
    border-color: var(--accent-color);
}

#file-input {
    display: none;
}

.attachments {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 12px;
}

.attachment {
    background-color: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-primary);
}

.attachment-remove {
    color: var(--danger-color);
    cursor: pointer;
    font-size: 12px;
    font-weight: bold;
    margin-left: 4px;
}

/* ===== MODAL ===== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(4px);
}

.modal-content {
    background-color: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: 32px;
    width: 90%;
    max-width: 480px;
    border: 1px solid var(--border-color);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

.modal-content h2 {
    margin-bottom: 16px;
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
}

.modal-content p {
    margin-bottom: 24px;
    color: var(--text-secondary);
    line-height: 1.6;
}

#token-input {
    width: 100%;
    padding: 14px 16px;
    background-color: var(--input-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 16px;
    margin-bottom: 24px;
    outline: none;
    font-family: inherit;
    transition: border-color 0.2s;
}

#token-input:focus {
    border-color: var(--accent-color);
}

.modal-buttons {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
}

.modal-buttons button {
    padding: 12px 24px;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s ease;
}

.modal-buttons button:first-child {
    background-color: var(--accent-color);
    color: white;
}

.modal-buttons button:first-child:hover {
    background-color: var(--accent-hover);
    transform: translateY(-1px);
}

.modal-buttons button.secondary {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.modal-buttons button.secondary:hover {
    background-color: var(--border-color);
}

/* ===== BALANCE INDICATOR ===== */
.balance-indicator {
    margin-left: auto;
    font-size: 11px;
    font-weight: 500;
    padding: 4px 8px;
    border-radius: 12px;
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.balance-indicator.low {
    background-color: var(--warning-color);
    color: white;
}

.balance-indicator.critical {
    background-color: var(--danger-color);
    color: white;
    animation: pulse 2s infinite;
}

.balance-indicator.good {
    background-color: var(--success-color);
    color: white;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.7; }
    100% { opacity: 1; }
}

.balance-details {
    border-top: 1px solid var(--border-color);
    padding-top: 10px;
    margin-top: 10px;
    font-size: 11px;
    color: var(--text-secondary);
}

.balance-details div {
    display: flex;
    justify-content: space-between;
    margin-bottom: 4px;
}

.balance-details div:last-child {
    margin-bottom: 0;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .sidebar {
        width: 240px;
    }
}

@media (max-width: 768px) {
    .sidebar {
        display: none;
    }
    
    .sidebar.active {
        display: flex;
        position: fixed;
        z-index: 100;
        height: 100%;
        width: 280px;
    }
    
    .chat-header h1 {
        font-size: 18px;
    }
    
    .chat-messages {
        padding: 16px;
    }
    
    .message {
        max-width: 90%;
        padding: 16px 20px;
    }
}

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

.message {
    animation: fadeIn 0.3s ease;
}

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

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: 4px;
}

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

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

/* ===== UTILITY ===== */
.hidden {
    display: none !important;
}

.text-success {
    color: var(--success-color);
}

.text-warning {
    color: var(--warning-color);
}

.text-danger {
    color: var(--danger-color);
}

.text-muted {
    color: var(--text-secondary);
}