:root {
    --bg: #1e1e1e;
    --bg-sidebar: #252526;
    --bg-titlebar: #323233;
    --bg-editor: #1e1e1e;
    --bg-chat: #252526;
    --bg-input: #3c3c3c;
    --border: #3e3e42;
    --text: #cccccc;
    --text-muted: #858585;
    --accent: #007acc;
    --accent-hover: #1a8ad4;
    --success: #4ec9b0;
    --warning: #cca700;
    --danger: #f14c4c;
    --tab-active: #1e1e1e;
    --tab-inactive: #2d2d2d;
    --font-ui: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-mono: "Cascadia Code", "Fira Code", Consolas, monospace;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: var(--font-ui);
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    overflow: hidden;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

code {
    font-family: var(--font-mono);
    font-size: 0.85em;
    background: rgba(255,255,255,0.08);
    padding: 0.1em 0.35em;
    border-radius: 3px;
}

/* Auth */
.auth-page {
    display: grid;
    place-items: center;
    min-height: 100vh;
    padding: 24px;
    background: radial-gradient(circle at top, rgba(0,122,204,0.15), transparent 50%), var(--bg);
}

.auth-card {
    width: min(100%, 420px);
    background: var(--bg-sidebar);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 32px;
}

.brand { text-align: center; margin-bottom: 24px; }
.brand-icon {
    display: inline-grid;
    place-items: center;
    width: 52px;
    height: 52px;
    border-radius: 10px;
    background: var(--accent);
    color: #fff;
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: 12px;
}
.brand h1 { margin: 0 0 6px; font-size: 1.4rem; }
.brand p, .muted { color: var(--text-muted); font-size: 0.9rem; }
.auth-footnote { margin-top: 16px; text-align: center; }

.login-form label { display: block; margin-bottom: 14px; }
.login-form label span { display: block; font-size: 0.8rem; color: var(--text-muted); margin-bottom: 4px; }
.login-form input {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--bg-input);
    color: var(--text);
    font-size: 0.95rem;
}

.alert { padding: 10px 14px; border-radius: 4px; margin-bottom: 16px; font-size: 0.9rem; }
.alert-error { background: rgba(241,76,76,0.15); border: 1px solid var(--danger); color: #ffb4b4; }

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 14px;
    border: none;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    font-family: inherit;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-ghost { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn-ghost:hover { background: rgba(255,255,255,0.06); }
.btn-sm { padding: 5px 10px; font-size: 0.8rem; }
.btn-block { width: 100%; }

/* IDE layout */
.ide-body { display: flex; flex-direction: column; height: 100vh; }

.titlebar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 36px;
    padding: 0 12px;
    background: var(--bg-titlebar);
    border-bottom: 1px solid var(--border);
    font-size: 0.8rem;
    flex-shrink: 0;
}

.titlebar-left, .titlebar-right {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
}

.titlebar-center {
    flex: 1;
    text-align: center;
    color: var(--text-muted);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    padding: 0 12px;
}

.titlebar-sep { color: var(--text-muted); }
.home-link { color: var(--text-muted); font-weight: 500; }
.home-link:hover { color: var(--text); text-decoration: none; }
.app-name { color: var(--text); }
.titlebar-badge {
    font-size: 0.7rem;
    padding: 2px 6px;
    border-radius: 3px;
    background: rgba(0,122,204,0.25);
    color: var(--accent);
    text-transform: uppercase;
}

.model-select {
    background: var(--bg-input);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 3px 8px;
    font-size: 0.75rem;
    max-width: 200px;
}

.toggle-uncensored {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.75rem;
    color: var(--text-muted);
    cursor: pointer;
}
.toggle-uncensored input { accent-color: var(--accent); }

.user-pill {
    font-size: 0.75rem;
    color: var(--text-muted);
    padding: 2px 8px;
    border: 1px solid var(--border);
    border-radius: 10px;
}

.banner {
    padding: 8px 14px;
    font-size: 0.8rem;
    flex-shrink: 0;
    border-bottom: 1px solid var(--border);
}
.banner-warn { background: rgba(204,167,0,0.12); color: #e8d44d; }
.banner-info { background: rgba(0,122,204,0.12); color: #7ec8f0; }

.ide-layout {
    display: flex;
    flex: 1;
    min-height: 0;
    overflow: hidden;
}

.sidebar {
    width: 220px;
    min-width: 140px;
    max-width: 400px;
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}

.sidebar-actions { display: flex; gap: 2px; }

.icon-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 0.85rem;
    line-height: 1;
}
.icon-btn:hover { background: rgba(255,255,255,0.08); color: var(--text); }

.file-tree {
    flex: 1;
    overflow-y: auto;
    padding: 4px 0;
    font-size: 0.82rem;
}

.tree-item {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 3px 8px 3px 12px;
    cursor: pointer;
    user-select: none;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.tree-item:hover { background: rgba(255,255,255,0.05); }
.tree-item.active { background: rgba(0,122,204,0.2); color: #fff; }
.tree-item.folder { font-weight: 500; }
.tree-item .icon { width: 16px; text-align: center; flex-shrink: 0; font-size: 0.75rem; }
.tree-item .name { overflow: hidden; text-overflow: ellipsis; }
.tree-item .delete-btn {
    margin-left: auto;
    opacity: 0;
    font-size: 0.7rem;
    padding: 0 4px;
    color: var(--danger);
}
.tree-item:hover .delete-btn { opacity: 1; }

.resize-handle {
    width: 4px;
    cursor: col-resize;
    background: transparent;
    flex-shrink: 0;
    transition: background 0.15s;
}
.resize-handle:hover, .resize-handle.dragging { background: var(--accent); }

.editor-pane {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    background: var(--bg-editor);
}

.tabs {
    display: flex;
    background: var(--tab-inactive);
    border-bottom: 1px solid var(--border);
    overflow-x: auto;
    flex-shrink: 0;
    min-height: 32px;
}

.tab {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    font-size: 0.8rem;
    background: var(--tab-inactive);
    border-right: 1px solid var(--border);
    cursor: pointer;
    white-space: nowrap;
    color: var(--text-muted);
}
.tab.active { background: var(--tab-active); color: var(--text); }
.tab .close {
    opacity: 0.5;
    font-size: 0.9rem;
    line-height: 1;
    padding: 0 2px;
}
.tab .close:hover { opacity: 1; color: var(--danger); }
.tab .dirty::before { content: '●'; margin-right: 2px; color: var(--text-muted); font-size: 0.6rem; }

.monaco-container { flex: 1; min-height: 0; }

.chat-panel {
    width: 360px;
    min-width: 260px;
    max-width: 600px;
    background: var(--bg-chat);
    border-left: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}

.chat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.msg {
    font-size: 0.85rem;
    line-height: 1.55;
}
.msg-user {
    align-self: flex-end;
    max-width: 92%;
    background: rgba(0,122,204,0.2);
    border: 1px solid rgba(0,122,204,0.3);
    border-radius: 8px 8px 2px 8px;
    padding: 8px 12px;
}
.msg-assistant {
    align-self: flex-start;
    max-width: 100%;
}
.msg-assistant .msg-body { color: var(--text); }
.msg-meta {
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.msg-body pre {
    background: #0d0d0d;
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 10px 12px;
    overflow-x: auto;
    margin: 8px 0;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    line-height: 1.45;
}
.msg-body code {
    background: rgba(255,255,255,0.06);
    padding: 0.15em 0.35em;
    border-radius: 3px;
    font-family: var(--font-mono);
    font-size: 0.82em;
}
.msg-body pre code { background: none; padding: 0; }
.msg-body p { margin: 0 0 8px; }
.msg-body p:last-child { margin-bottom: 0; }

.msg-error { color: var(--danger); font-size: 0.85rem; }

.typing-indicator {
    color: var(--text-muted);
    font-size: 0.8rem;
    animation: pulse 1.2s infinite;
}
@keyframes pulse { 0%,100% { opacity: 0.4; } 50% { opacity: 1; } }

.chat-input-area {
    border-top: 1px solid var(--border);
    padding: 10px 12px;
    flex-shrink: 0;
}

.chat-context {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.chat-input-area textarea {
    width: 100%;
    resize: vertical;
    min-height: 60px;
    max-height: 200px;
    padding: 8px 10px;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--bg-input);
    color: var(--text);
    font-family: var(--font-ui);
    font-size: 0.85rem;
    line-height: 1.4;
}
.chat-input-area textarea:focus { outline: 1px solid var(--accent); border-color: var(--accent); }
.chat-input-area textarea:disabled { opacity: 0.5; }

.chat-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    margin-top: 8px;
}

@media (max-width: 900px) {
    .sidebar { width: 180px; }
    .chat-panel { width: 280px; }
    .model-select { max-width: 140px; }
}

/* Settings page */
.settings-body { overflow: auto; }

.settings-main {
    max-width: 640px;
    margin: 0 auto;
    padding: 24px 20px 48px;
}

.settings-panel h1 { margin: 0 0 8px; font-size: 1.4rem; }
.settings-panel > .muted { margin-bottom: 24px; }

.settings-form fieldset {
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 16px 18px;
    margin-bottom: 20px;
}

.settings-form legend {
    padding: 0 6px;
    font-weight: 600;
    font-size: 0.9rem;
}

.section-note { font-size: 0.85rem; margin: 0 0 14px; }

.settings-form label {
    display: block;
    margin-bottom: 14px;
}

.settings-form label span {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.settings-form input[type="text"],
.settings-form input[type="password"],
.settings-form input[type="number"],
.settings-form select {
    width: 100%;
    padding: 9px 11px;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--bg-input);
    color: var(--text);
    font-size: 0.9rem;
    font-family: inherit;
}

.settings-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.settings-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 4px;
}

.test-result { font-size: 0.85rem; color: var(--text-muted); }
.test-ok { color: var(--success); }
.test-fail { color: var(--danger); }

.config-badge {
    display: inline-block;
    font-size: 0.75rem;
    padding: 2px 8px;
    border-radius: 10px;
    margin-left: 6px;
}
.config-badge-ok { background: rgba(78,201,176,0.15); color: var(--success); }
.config-badge-missing { background: rgba(204,167,0,0.15); color: var(--warning); }

.alert-success {
    background: rgba(78,201,176,0.12);
    border: 1px solid var(--success);
    color: var(--success);
    padding: 10px 14px;
    border-radius: 4px;
    margin-bottom: 16px;
    font-size: 0.9rem;
}