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

:root {
    --bg: #f5f5f5;
    --block-bg: #e8e8e8;
    --panel-bg: #ffffff;
    --text: #333333;
    --text-muted: #888888;
    --accent: #6366f1;
    --border: #dddddd;
    --radius: 12px;
    --gap: 8px;
    --sidebar-width: 52px;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    height: 100vh;
    overflow: hidden;
    padding: var(--gap);
}

.app {
    display: flex;
    flex-direction: column;
    height: 100%;
    gap: var(--gap);
}

/* ========== Шапка ========== */
.header {
    background: var(--block-bg);
    border-radius: var(--radius);
    padding: 12px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
}

.logo {
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
}

.balance {
    font-size: 14px;
    color: var(--text-muted);
}

/* ========== Тело ========== */
.body {
    display: flex;
    flex: 1;
    gap: var(--gap);
    min-height: 0;
}

/* ========== Сайдбар ========== */
.sidebar {
    background: var(--block-bg);
    border-radius: var(--radius);
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 12px 8px;
    gap: 6px;
    flex-shrink: 0;
    width: var(--sidebar-width);
}

.preset-btn {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: var(--panel-bg);
    color: var(--text);
    font-size: 16px;
    cursor: pointer;
    transition: all 0.15s;
}

.preset-btn:hover {
    border-color: var(--accent);
    background: #eef2ff;
}

.preset-btn.active {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

/* ========== Основа ========== */
.main {
    flex: 1;
    display: flex;
    gap: var(--gap);
    min-width: 0;
}

/* ========== Панели ========== */
.panel {
    background: var(--block-bg);
    border-radius: var(--radius);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.panel-header {
    padding: 10px 16px;
    font-weight: 600;
    font-size: 13px;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

/* Дирижёр */
.panel-conductor {
    flex: 6;
    min-width: 0;
}

/* Правая колонка */
.right-col {
    flex: 4;
    display: flex;
    flex-direction: column;
    gap: var(--gap);
    min-width: 0;
}

/* Планировщик */
.panel-planner {
    flex: 1;
    min-height: 0;
}

/* Терминал */
.panel-terminal {
    flex: 1;
    min-height: 0;
}

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

.chat-input {
    padding: 12px;
    border-top: 1px solid var(--border);
    display: flex;
    gap: 8px;
}

.chat-input textarea {
    flex: 1;
    background: var(--panel-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 10px;
    color: var(--text);
    resize: none;
    font-family: inherit;
    font-size: 14px;
}

.chat-input button {
    width: 40px;
    background: var(--accent);
    border: none;
    border-radius: 8px;
    color: white;
    font-size: 16px;
    cursor: pointer;
}

/* ========== Планировщик ========== */
.planner-log {
    flex: 1;
    overflow-y: auto;
    padding: 12px;
    font-family: 'Courier New', monospace;
    font-size: 12px;
    line-height: 1.6;
}

.planner-empty {
    color: var(--text-muted);
    text-align: center;
    padding-top: 20px;
}

.planner-line {
    padding: 2px 0;
    color: var(--text-muted);
}

.planner-line .arrow {
    color: var(--accent);
}

/* ========== Терминал ========== */
#terminal-container {
    flex: 1;
    padding: 4px;
}

.xterm {
    height: 100%;
}

/* ========== Сообщения ========== */
.message {
    padding: 8px 12px;
    border-radius: 8px;
    font-size: 14px;
    line-height: 1.5;
    white-space: pre-wrap;
    word-break: break-word;
}

.message.user {
    background: var(--panel-bg);
    align-self: flex-end;
    border: 1px solid var(--border);
}

.message.assistant {
    background: transparent;
}