.auth-gate {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
    padding: 20px;
}

.auth-card {
    width: 100%;
    max-width: 420px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 28px;
}

.auth-card h1 {
    margin-bottom: 10px;
}

.auth-card p {
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.auth-card input {
    width: 100%;
    padding: 12px;
    margin-bottom: 12px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
}

.auth-hint {
    font-size: 0.8em;
    margin-top: 12px;
}

.hidden {
    display: none !important;
}

.dev-app {
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.dev-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 10px 16px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
}

.dev-header-left,
.dev-header-right {
    display: flex;
    align-items: center;
    gap: 10px;
}

.dev-header-center {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
    font-size: 0.85em;
    color: var(--text-secondary);
}

.file-label {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.dev-main {
    flex: 1;
    display: grid;
    grid-template-columns: 240px 280px 1fr 340px;
    min-height: 0;
}

.panel-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 14px;
    font-weight: 600;
    border-bottom: 1px solid var(--border);
}

.projects-panel,
.tree-panel,
.agent-panel {
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.agent-panel {
    border-right: none;
    border-left: 1px solid var(--border);
}

.dev-search {
    margin: 10px;
    padding: 8px 10px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
}

.projects-list,
.file-tree {
    flex: 1;
    overflow: auto;
    padding: 8px;
}

.project-item,
.tree-item {
    padding: 10px 12px;
    border-radius: 8px;
    cursor: pointer;
    margin-bottom: 4px;
    border: 1px solid transparent;
}

.project-item:hover,
.tree-item:hover {
    background: var(--bg-tertiary);
}

.project-item.active,
.tree-item.active {
    background: var(--primary-dark);
    border-color: var(--primary);
}

.project-item small,
.tree-item small {
    display: block;
    color: var(--text-secondary);
    font-size: 0.75em;
    margin-top: 4px;
}

.tree-item.dir::before {
    content: "📁 ";
}

.tree-item.file::before {
    content: "📄 ";
}

.editor-panel {
    display: flex;
    flex-direction: column;
    min-width: 0;
    min-height: 0;
    background: #1e1e1e;
    position: relative;
}

.editor-tabs {
    display: flex;
    gap: 4px;
    padding: 8px;
    background: #252526;
    border-bottom: 1px solid #333;
    overflow-x: auto;
}

.editor-tab {
    padding: 6px 12px;
    background: #2d2d2d;
    border-radius: 6px 6px 0 0;
    cursor: pointer;
    font-size: 0.85em;
    white-space: nowrap;
}

.editor-tab.active {
    background: #1e1e1e;
    color: #fff;
}

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

.editor-empty {
    position: absolute;
    inset: 40px 0 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--text-secondary);
    pointer-events: none;
}

.agent-messages {
    flex: 1;
    overflow: auto;
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.agent-msg {
    padding: 10px 12px;
    border-radius: 10px;
    line-height: 1.5;
    font-size: 0.92em;
}

.agent-msg.user {
    background: var(--primary-dark);
    align-self: flex-end;
    max-width: 95%;
}

.agent-msg.assistant {
    background: var(--bg-tertiary);
    align-self: flex-start;
    max-width: 95%;
}

.agent-mode-badge {
    font-size: 0.75em;
    padding: 3px 8px;
    border-radius: 999px;
    background: var(--bg-tertiary);
}

.agent-mode-badge.project {
    color: #93c5fd;
}

.agent-mode-badge.file {
    color: #fcd34d;
}

.project-goal-wrap {
    padding: 10px 12px 0;
    border-bottom: 1px solid var(--border);
}

.project-goal-wrap label {
    display: block;
    font-size: 0.8em;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.project-goal-wrap textarea {
    width: 100%;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    padding: 8px;
    resize: vertical;
    min-height: 52px;
}

.project-snapshot {
    padding: 10px 12px;
    font-size: 0.78em;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border);
    line-height: 1.45;
    max-height: 120px;
    overflow: auto;
}

.project-snapshot strong {
    color: var(--text-primary);
}

.agent-msg.system {
    background: rgba(99, 102, 241, 0.15);
    border: 1px dashed var(--border);
    font-size: 0.85em;
}


.agent-msg pre {
    background: var(--bg-primary);
    padding: 10px;
    border-radius: 8px;
    overflow: auto;
    margin-top: 8px;
}

.agent-input-wrap {
    display: flex;
    gap: 8px;
    padding: 10px;
    border-top: 1px solid var(--border);
}

.agent-input-wrap textarea {
    flex: 1;
    resize: none;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    padding: 8px;
}

.agent-quick {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    padding: 0 10px 10px;
}

.agent-quick .suggestion-chip {
    font-size: 0.75em;
    padding: 6px 10px;
}

.readonly-badge {
    color: var(--warning);
    font-size: 0.75em;
}

@media (max-width: 1100px) {
    .dev-main {
        grid-template-columns: 220px 1fr;
        grid-template-rows: 1fr 280px;
        grid-template-areas:
            "projects editor"
            "tree agent";
    }

    .projects-panel { grid-area: projects; }
    .tree-panel { grid-area: tree; }
    .editor-panel { grid-area: editor; }
    .agent-panel { grid-area: agent; border-left: none; border-top: 1px solid var(--border); }
}

@media (max-width: 768px) {
    .dev-main {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto 1fr auto;
    }
}