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

:root {
    --primary-color: #6366f1;
    --secondary-color: #8b5cf6;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --bg-color: #0f172a;
    --surface-color: #1e293b;
    --surface-light: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --border-color: #475569;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 0;
    border-bottom: 2px solid var(--border-color);
    margin-bottom: 30px;
    gap: 20px;
}

.header-main { flex: 1; }

header h1 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 4px;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Account switcher */
.account-switcher {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.account-label {
    color: var(--text-secondary);
    font-size: 0.85rem;
    white-space: nowrap;
}

.account-dropdown { position: relative; }

.account-btn {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 8px 14px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.95rem;
    transition: all 0.2s;
    white-space: nowrap;
}

.account-btn:hover {
    border-color: var(--primary-color);
    background: var(--surface-light);
}

.account-menu {
    position: absolute;
    right: 0;
    top: calc(100% + 6px);
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    min-width: 160px;
    z-index: 100;
    box-shadow: 0 8px 24px rgba(0,0,0,0.4);
}

.account-menu-item {
    padding: 10px 16px;
    cursor: pointer;
    color: var(--text-primary);
    font-size: 0.95rem;
    transition: background 0.2s;
}

.account-menu-item:hover { background: var(--surface-light); }
.account-menu-item.active { color: var(--primary-color); }

/* Accounts settings */
.settings-section {
    margin-top: 30px;
    padding: 24px;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 20px;
}

.settings-section h3 {
    color: var(--primary-color);
    margin-bottom: 16px;
}

.accounts-list { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }

.account-card {
    background: var(--surface-light);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
}

.account-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.account-card-name { font-weight: bold; color: var(--text-primary); }

.account-badge {
    background: var(--primary-color);
    color: white;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 0.8rem;
}

.btn-test {
    background: #2a4a5e;
    color: #7ecfff;
    border: 1px solid #3a6a8e;
}
.btn-test:hover { background: #1e3a50; }

.account-test-result {
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 0.85rem;
    line-height: 1.5;
}
.account-test-result.test-ok {
    background: rgba(40, 167, 69, 0.15);
    border: 1px solid rgba(40, 167, 69, 0.4);
    color: #5dbb75;
}
.account-test-result.test-fail {
    background: rgba(220, 53, 69, 0.15);
    border: 1px solid rgba(220, 53, 69, 0.4);
    color: #e07b86;
}

/* Tabs */
.tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
    border-bottom: 2px solid var(--border-color);
    overflow-x: auto;
}

.tab-button {
    background: transparent;
    border: none;
    padding: 12px 24px;
    font-size: 1rem;
    color: var(--text-secondary);
    cursor: pointer;
    border-bottom: 3px solid transparent;
    transition: all 0.3s;
}

.tab-button:hover {
    color: var(--text-primary);
    background: var(--surface-color);
}

.tab-button.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s;
}

.tab-content.active {
    display: block;
}

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

/* Stats */
.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--surface-color);
    padding: 20px;
    border-radius: 8px;
    text-align: center;
    border: 1px solid var(--border-color);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--primary-color);
}

.stat-label {
    color: var(--text-secondary);
    margin-top: 5px;
}

/* Forms */
.form {
    background: var(--surface-color);
    padding: 30px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    margin-bottom: 30px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-primary);
    font-weight: 500;
}

.form-group input[type="text"],
.form-group input[type="number"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    background: var(--surface-light);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.radio-group {
    display: flex;
    gap: 20px;
}

.radio-group label {
    display: flex;
    align-items: center;
    gap: 8px;
}

.checkbox-label {
    display: flex !important;
    flex-direction: column;
    gap: 8px;
    padding: 16px;
    background: var(--surface-light);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
}

.checkbox-label:hover {
    border-color: var(--primary-color);
    background: var(--surface-color);
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    cursor: pointer;
    margin-right: 8px;
}

.checkbox-label strong {
    color: var(--primary-color);
}

.checkbox-label .help-text {
    margin-top: 0;
    margin-left: 28px;
}

.help-text {
    display: block;
    margin-top: 8px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.help-text code {
    background: var(--surface-light);
    padding: 2px 6px;
    border-radius: 4px;
    color: var(--primary-color);
}

/* Buttons */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s;
    background: var(--surface-light);
    color: var(--text-primary);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

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

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

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

.btn-small {
    padding: 8px 16px;
    font-size: 0.9rem;
}

.btn-refresh {
    margin-top: 20px;
}

.form-actions {
    display: flex;
    gap: 10px;
}

/* Tasks List */
.tasks-list {
    display: grid;
    gap: 15px;
}

.task-card {
    background: var(--surface-color);
    padding: 20px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: transform 0.3s;
}

.task-card:hover {
    transform: translateX(5px);
    border-color: var(--primary-color);
}

.task-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.task-name {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--text-primary);
}

.task-status {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

.status-scheduled {
    background: var(--warning-color);
    color: white;
}

.status-running {
    background: var(--primary-color);
    color: white;
}

.status-completed {
    background: var(--success-color);
    color: white;
}

.status-failed {
    background: var(--danger-color);
    color: white;
}

.task-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 10px;
    margin: 15px 0;
    color: var(--text-secondary);
}

.task-info-item {
    display: flex;
    flex-direction: column;
}

.task-info-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.task-info-value {
    font-size: 0.95rem;
    color: var(--text-primary);
    word-break: break-all;
}

.task-actions {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}

/* Logs */
.logs-list {
    display: grid;
    gap: 10px;
}

.log-item {
    background: var(--surface-color);
    padding: 15px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: all 0.3s;
}

.log-item:hover {
    border-color: var(--primary-color);
}

.log-name {
    font-weight: 500;
    color: var(--text-primary);
}

.log-meta {
    display: flex;
    gap: 20px;
    margin-top: 5px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.log-content {
    background: #000;
    padding: 20px;
    border-radius: 6px;
    margin-top: 15px;
    max-height: 400px;
    overflow-y: auto;
    display: none;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.log-content.active {
    display: block;
}

/* Settings */
.settings-info {
    margin-top: 40px;
    padding: 20px;
    background: var(--surface-color);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.settings-info h3 {
    margin-bottom: 15px;
    color: var(--primary-color);
}

.settings-info p {
    margin-bottom: 10px;
}

.settings-info code {
    background: var(--surface-light);
    padding: 4px 8px;
    border-radius: 4px;
    color: var(--success-color);
}

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

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

.error {
    background: var(--danger-color);
    color: white;
    padding: 15px;
    border-radius: 6px;
    margin-bottom: 20px;
}

.success {
    background: var(--success-color);
    color: white;
    padding: 15px;
    border-radius: 6px;
    margin-bottom: 20px;
}

/* Input with button */
.input-with-button {
    display: flex;
    gap: 10px;
    align-items: center;
}

.input-with-button input {
    flex: 1;
}

.file-status {
    display: block;
    margin-top: 8px;
    padding: 8px;
    border-radius: 4px;
    font-size: 0.9rem;
}

.file-status.success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
    border: 1px solid var(--success-color);
}

.file-status.error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
    border: 1px solid var(--danger-color);
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal-content {
    background: var(--surface-color);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    max-width: 800px;
    width: 90%;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
}

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

.modal-header h3 {
    margin: 0;
    color: var(--primary-color);
}

.modal-close {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.3s;
}

.modal-close:hover {
    color: var(--text-primary);
}

.modal-body {
    padding: 20px;
    overflow-y: auto;
}

/* File Picker */
.file-picker-info {
    margin-bottom: 20px;
    padding: 12px;
    background: var(--surface-light);
    border-radius: 6px;
    color: var(--text-secondary);
}

.file-list {
    display: grid;
    gap: 8px;
}

.file-item {
    padding: 12px;
    background: var(--surface-light);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s;
}

.file-item:hover {
    border-color: var(--primary-color);
    background: var(--surface-color);
}

.file-item-name {
    font-weight: 500;
    color: var(--text-primary);
}

.file-item-path {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 4px;
}

/* ============ Sessions Tab ============ */

#sessions.tab-content.active {
    display: flex;
    flex-direction: column;
    height: calc(100vh - 260px);
    min-height: 500px;
}

.sessions-layout {
    display: flex;
    gap: 0;
    height: 100%;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
}

.sessions-sidebar {
    width: 300px;
    min-width: 220px;
    flex-shrink: 0;
    background: var(--surface-color);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.sessions-sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 16px;
    border-bottom: 1px solid var(--border-color);
    background: var(--surface-light);
}

.sessions-sidebar-header h3 { font-size: 1rem; margin: 0; color: var(--primary-color); }

#sessions-list {
    flex: 1;
    overflow-y: auto;
}

.session-item {
    padding: 12px 14px;
    border-bottom: 1px solid var(--border-color);
    cursor: default;
    transition: background 0.2s;
}

.session-item:hover { background: var(--surface-light); }
.session-item.session-open { border-left: 3px solid var(--primary-color); }

.session-item-name {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 4px;
    word-break: break-word;
}

.session-item-meta {
    display: flex;
    gap: 10px;
    font-size: 0.78rem;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.session-item-path {
    font-size: 0.72rem;
    color: var(--text-secondary);
    opacity: 0.7;
    margin-bottom: 6px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.session-item-actions { margin-top: 6px; }

/* Terminal area */
.sessions-terminals {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: #0d1117;
    overflow: hidden;
    min-width: 0;
}

.terminals-empty {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    gap: 12px;
}

.terminals-empty-icon { font-size: 3rem; opacity: 0.4; }

.terminal-tabs-bar {
    display: flex;
    align-items: center;
    background: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
    padding: 0 6px;
    min-height: 38px;
    overflow-x: auto;
    flex-shrink: 0;
}

.terminal-tabs-list { display: flex; gap: 4px; }

.terminal-tab {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: var(--surface-light);
    border: 1px solid var(--border-color);
    border-radius: 4px 4px 0 0;
    cursor: pointer;
    font-size: 0.85rem;
    color: var(--text-secondary);
    white-space: nowrap;
    transition: all 0.2s;
    user-select: none;
}

.terminal-tab:hover { background: var(--bg-color); color: var(--text-primary); }

.terminal-tab.active {
    background: #0d1117;
    border-bottom-color: #0d1117;
    color: var(--primary-color);
}

.terminal-tab-close {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.75rem;
    line-height: 1;
    padding: 0 2px;
    border-radius: 2px;
}

.terminal-tab-close:hover { color: var(--danger-color); background: rgba(239,68,68,0.1); }

.terminal-panels-area {
    flex: 1;
    position: relative;
    overflow: hidden;
    min-height: 0;
}

.terminal-panel {
    display: none;
    flex-direction: column;
    position: absolute;
    inset: 0;
}

.terminal-panel.active { display: flex; }

.terminal-status-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 5px 10px;
    background: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
    font-size: 0.82rem;
    flex-shrink: 0;
    flex-wrap: wrap;
}

.terminal-status-bar span { flex: 1; color: var(--text-secondary); min-width: 120px; }

.terminal-model-sel,
.terminal-acc-sel {
    background: var(--surface-light);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 3px 6px;
    border-radius: 4px;
    font-size: 0.8rem;
    cursor: pointer;
}

.terminal-output {
    flex: 1;
    overflow-y: auto;
    background: #0d1117;
    color: #c9d1d9;
    padding: 12px 14px;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 13px;
    margin: 0;
    white-space: pre-wrap;
    word-wrap: break-word;
    min-height: 0;
}

/* Image paste strip */
.terminal-image-strip {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 6px 10px;
    background: var(--surface-color);
    border-top: 1px solid var(--border-color);
    flex-shrink: 0;
}
.terminal-image-strip.hidden { display: none; }

.image-thumb {
    position: relative;
    border-radius: 6px;
    overflow: hidden;
    border: 1px solid var(--border-color);
}
.image-thumb img {
    display: block;
    max-width: 120px;
    max-height: 90px;
    object-fit: contain;
    background: #0d1117;
}
.image-thumb-remove {
    position: absolute;
    top: 2px;
    right: 2px;
    background: rgba(0,0,0,0.7);
    color: #fff;
    border: none;
    border-radius: 50%;
    width: 18px;
    height: 18px;
    font-size: 10px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    line-height: 1;
}
.image-thumb-remove:hover { background: #c0392b; }

.terminal-input-bar {
    display: flex;
    gap: 8px;
    padding: 8px 10px;
    background: var(--surface-color);
    border-top: 1px solid var(--border-color);
    align-items: flex-end;
    flex-shrink: 0;
}

.terminal-input {
    flex: 1;
    background: var(--surface-light);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 8px 10px;
    border-radius: 6px;
    font-size: 0.9rem;
    font-family: inherit;
    resize: none;
    min-height: 40px;
    max-height: 120px;
    transition: border-color 0.2s;
}

.terminal-input:focus { outline: none; border-color: var(--primary-color); }

.terminal-send-btn { flex-shrink: 0; }

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

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }

    header h1 {
        font-size: 2rem;
    }

    .stats {
        grid-template-columns: 1fr 1fr;
    }

    .task-info {
        grid-template-columns: 1fr;
    }

    .tabs {
        flex-wrap: nowrap;
    }

    .input-with-button {
        flex-direction: column;
    }

    .input-with-button input {
        width: 100%;
    }

    .modal-content {
        width: 95%;
        max-height: 90vh;
    }
}