:root {
    --tg-theme-bg-color: #1c1c1e;
    --tg-theme-text-color: #ffffff;
    --tg-theme-hint-color: #999999;
    --tg-theme-link-color: #007aff;
    --tg-theme-button-color: #007aff;
    --tg-theme-button-text-color: #ffffff;
    --tg-theme-secondary-bg-color: #2c2c2e;
    --terminal-bg: #0d0d0d;
    --terminal-text: #00ff00;
    --success-color: #34c759;
    --error-color: #ff3b30;
    --warning-color: #ff9500;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--tg-theme-bg-color);
    color: var(--tg-theme-text-color);
    overflow: hidden;
    height: 100vh;
}

.screen {
    height: 100vh;
    width: 100vw;
    position: fixed;
    top: 0;
    left: 0;
}

.hidden {
    display: none !important;
}

/* Auth Screen */
.auth-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    padding: 20px;
    text-align: center;
}

.auth-container h1 {
    font-size: 24px;
    margin-bottom: 16px;
}

.auth-container p {
    color: var(--tg-theme-hint-color);
    margin: 8px 0;
}

/* Header */
.header {
    background-color: var(--tg-theme-secondary-bg-color);
    padding: 12px 16px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.user-info {
    margin-bottom: 12px;
    font-weight: 600;
}

.nav {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 4px;
}

.nav-btn {
    background: var(--tg-theme-button-color);
    color: var(--tg-theme-button-text-color);
    border: none;
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    white-space: nowrap;
    transition: opacity 0.2s;
}

.nav-btn:active {
    opacity: 0.7;
}

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

/* Content */
.content {
    height: calc(100vh - 80px);
    overflow: hidden;
}

.tab {
    height: 100%;
    overflow-y: auto;
}

/* Terminal */
#terminal-tab {
    display: flex;
    flex-direction: column;
}

#terminal-container {
    flex: 1;
    background: var(--terminal-bg);
    padding: 8px;
    overflow: hidden;
}

.terminal-input-container {
    display: flex;
    padding: 8px;
    background: var(--tg-theme-secondary-bg-color);
    gap: 8px;
}

#terminal-input {
    flex: 1;
    background: var(--tg-theme-bg-color);
    border: 1px solid rgba(255,255,255,0.1);
    color: var(--tg-theme-text-color);
    padding: 12px;
    border-radius: 8px;
    font-size: 14px;
}

#terminal-input:focus {
    outline: none;
    border-color: var(--tg-theme-button-color);
}

#terminal-send {
    background: var(--tg-theme-button-color);
    color: var(--tg-theme-button-text-color);
    border: none;
    padding: 12px 20px;
    border-radius: 8px;
    font-size: 16px;
    cursor: pointer;
}

.terminal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    background: var(--tg-theme-secondary-bg-color);
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.terminal-mode {
    font-size: 14px;
    font-weight: 600;
}

#terminal-mode-toggle {
    background: var(--tg-theme-button-color);
    color: var(--tg-theme-button-text-color);
    border: none;
    padding: 6px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 16px;
}

.terminal-status {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: var(--tg-theme-secondary-bg-color);
    border-top: 1px solid rgba(255,255,255,0.1);
    font-size: 12px;
}

#terminal-connection {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--warning-color);
    display: inline-block;
}

#terminal-connection.connected {
    background: var(--success-color);
}

#terminal-connection.disconnected {
    background: var(--error-color);
}

.path-bar {
    padding: 8px 16px;
    background: var(--tg-theme-secondary-bg-color);
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

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

#upload-file-btn {
    background: var(--tg-theme-button-color);
    color: var(--tg-theme-button-text-color);
    border: none;
    padding: 8px 16px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
}

.file-item {
    display: flex;
    align-items: center;
    padding: 12px;
    background: var(--tg-theme-secondary-bg-color);
    border-radius: 8px;
    margin-bottom: 8px;
    cursor: pointer;
    gap: 12px;
}

.file-item .file-actions {
    margin-left: auto;
    display: flex;
    gap: 4px;
}

.file-item:hover {
    opacity: 0.8;
}

.file-action-btn {
    background: var(--tg-theme-button-color);
    color: var(--tg-theme-button-text-color);
    border: none;
    padding: 4px 8px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
}

/* Sessions */
.tab-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    background: var(--tg-theme-secondary-bg-color);
}

.tab-header h2 {
    font-size: 18px;
}

#refresh-sessions, .refresh-btn {
    background: var(--tg-theme-button-color);
    color: var(--tg-theme-button-text-color);
    border: none;
    padding: 8px 16px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 18px;
}

.sessions-list {
    padding: 16px;
}

.session-item {
    background: var(--tg-theme-secondary-bg-color);
    padding: 16px;
    border-radius: 12px;
    margin-bottom: 12px;
    cursor: pointer;
    transition: transform 0.2s;
}

.session-item:active {
    transform: scale(0.98);
}

.session-item h3 {
    font-size: 16px;
    margin-bottom: 4px;
}

.session-item .session-id {
    color: var(--tg-theme-hint-color);
    font-size: 12px;
    font-family: monospace;
}

.session-item .mode-badge {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    margin-top: 8px;
}

.mode-badge.plan {
    background: rgba(52, 199, 89, 0.2);
    color: var(--success-color);
}

.mode-badge.build {
    background: rgba(255, 149, 0, 0.2);
    color: var(--warning-color);
}

.session-control {
    padding: 16px;
}

.session-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.session-actions {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
}

.session-actions button {
    flex: 1;
    background: var(--tg-theme-button-color);
    color: var(--tg-theme-button-text-color);
    border: none;
    padding: 12px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
}

.session-chat {
    background: var(--tg-theme-secondary-bg-color);
    border-radius: 12px;
    padding: 16px;
    min-height: 300px;
    display: flex;
    flex-direction: column;
}

#chat-messages {
    flex: 1;
    overflow-y: auto;
    margin-bottom: 12px;
    max-height: 400px;
}

.chat-message {
    margin-bottom: 12px;
    padding: 12px;
    border-radius: 8px;
    font-size: 14px;
    line-height: 1.4;
}

.chat-message.user {
    background: rgba(0, 122, 255, 0.2);
    border-left: 3px solid var(--tg-theme-button-color);
}

.chat-message.agent {
    background: rgba(52, 199, 89, 0.2);
    border-left: 3px solid var(--success-color);
}

.chat-message pre {
    white-space: pre-wrap;
    word-wrap: break-word;
    font-family: monospace;
    font-size: 12px;
    margin-top: 8px;
}

.chat-input-container {
    display: flex;
    gap: 8px;
}

#chat-input {
    flex: 1;
    background: var(--tg-theme-bg-color);
    border: 1px solid rgba(255,255,255,0.1);
    color: var(--tg-theme-text-color);
    padding: 12px;
    border-radius: 8px;
    font-size: 14px;
}

#chat-send {
    background: var(--tg-theme-button-color);
    color: var(--tg-theme-button-text-color);
    border: none;
    padding: 12px 20px;
    border-radius: 8px;
    cursor: pointer;
}

/* Files */
.path-display {
    color: var(--tg-theme-hint-color);
    font-size: 12px;
    font-family: monospace;
}

.files-list {
    padding: 16px;
}

.file-item {
    display: flex;
    align-items: center;
    padding: 12px;
    background: var(--tg-theme-secondary-bg-color);
    border-radius: 8px;
    margin-bottom: 8px;
    cursor: pointer;
}

.file-item:active {
    opacity: 0.7;
}

.file-icon {
    font-size: 24px;
    margin-right: 12px;
}

.file-info {
    flex: 1;
}

.file-name {
    font-size: 14px;
    margin-bottom: 4px;
}

.file-size {
    color: var(--tg-theme-hint-color);
    font-size: 12px;
}

/* Status */
.status-grid {
    padding: 16px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 16px;
}

.status-card {
    background: var(--tg-theme-secondary-bg-color);
    padding: 20px;
    border-radius: 12px;
    text-align: center;
}

.status-card h3 {
    font-size: 14px;
    color: var(--tg-theme-hint-color);
    margin-bottom: 12px;
}

.status-value {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
}

.status-bar {
    background: rgba(255,255,255,0.1);
    height: 8px;
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 8px;
}

.bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--tg-theme-button-color), var(--success-color));
    transition: width 0.3s;
}

.status-percent {
    font-size: 24px;
    font-weight: 700;
    color: var(--success-color);
}

.refresh-btn {
    display: block;
    margin: 16px auto;
    background: var(--tg-theme-button-color);
    color: var(--tg-theme-button-text-color);
    border: none;
    padding: 12px 32px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
}

/* Loading */
.loading {
    text-align: center;
    padding: 40px;
    color: var(--tg-theme-hint-color);
}

/* Error */
.error-message {
    background: rgba(255, 59, 48, 0.2);
    color: var(--error-color);
    padding: 16px;
    border-radius: 8px;
    margin: 16px;
}

/* Responsive */
@media (min-width: 768px) {
    .content {
        max-width: 800px;
        margin: 0 auto;
    }
}