:root {
    --bg-primary: #0a0e14;
    --bg-secondary: #0d1117;
    --bg-tertiary: #161b22;
    --bg-elevated: #1c2128;
    --bg-hover: #21262d;
    --border: #30363d;
    --border-light: #3a424a;
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --text-muted: #6e7681;
    --accent: #c084fc;
    --accent-dim: #9333ea;
    --accent-glow: rgba(192, 132, 252, 0.15);
    --danger: #f85149;
    --success: #3fb950;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    --font-ui: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --sidebar-width: 200px;
}

/* Lab Topbar */
.lab-topbar {
    display: flex;
    align-items: center;
    gap: 0;
    background: #080810;
    border-bottom: 1px solid var(--border);
    height: 32px;
    padding: 0 12px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1px;
    flex-shrink: 0;
}
.topbar-home {
    color: #3fb950;
    text-decoration: none;
    padding: 0 12px 0 0;
    border-right: 1px solid var(--border);
    margin-right: 8px;
}
.topbar-link {
    color: var(--text-muted);
    text-decoration: none;
    padding: 4px 10px;
    border-radius: 4px;
    transition: all 0.15s;
}
.topbar-link:hover { color: var(--text-primary); background: var(--bg-hover); }
.topbar-lapiz.active, .topbar-lapiz:hover { color: #4fc3f7; }
.topbar-nota.active, .topbar-nota:hover { color: #00cc88; }
.topbar-historia.active, .topbar-historia:hover { color: #c084fc; }
.topbar-link.active { background: rgba(255,255,255,0.05); }
.topbar-project {
    margin-left: auto;
    color: #f0c040;
    font-size: 11px;
    font-weight: 600;
    padding: 3px 10px;
    background: rgba(240, 192, 64, 0.1);
    border: 1px solid rgba(240, 192, 64, 0.3);
    border-radius: 4px;
}

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

html, body {
    height: 100%;
    font-family: var(--font-ui);
    font-size: 14px;
    color: var(--text-primary);
    background: var(--bg-primary);
}

.app-layout { display: flex; height: calc(100vh - 32px); overflow: hidden; }

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}

.sidebar-brand {
    padding: 20px 16px 12px;
    border-bottom: 1px solid var(--border);
}
.sidebar-brand h1 {
    font-size: 18px;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: 2px;
}
.sidebar-brand span {
    font-size: 11px;
    color: var(--text-muted);
}

.sidebar-nav {
    flex: 1;
    padding: 12px 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 13px;
    transition: all 0.15s;
}
.nav-item:hover { background: var(--bg-hover); color: var(--text-primary); }
.nav-item.active { background: var(--accent-glow); color: var(--accent); border-left: 3px solid var(--accent); }
.nav-icon { font-size: 16px; width: 20px; text-align: center; }

.sidebar-footer {
    padding: 12px 16px;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.user-info { font-size: 12px; color: var(--text-secondary); }
.btn-logout {
    background: none;
    border: 1px solid var(--border);
    color: var(--text-muted);
    padding: 4px 10px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 11px;
}
.btn-logout:hover { border-color: var(--danger); color: var(--danger); }

/* Main */
.main-content { flex: 1; overflow-y: auto; padding: 24px 32px; }

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
}
.page-header h2 { font-size: 22px; font-weight: 600; }
.header-actions { display: flex; gap: 8px; align-items: center; }

/* Buttons */
.btn {
    padding: 8px 16px;
    border-radius: 6px;
    border: 1px solid var(--border);
    background: var(--bg-elevated);
    color: var(--text-primary);
    font-size: 13px;
    cursor: pointer;
    transition: all 0.15s;
}
.btn:hover { background: var(--bg-hover); }
.btn-primary { background: var(--accent-dim); border-color: var(--accent-dim); color: #fff; }
.btn-primary:hover { background: var(--accent); }
.btn-danger { border-color: var(--danger); color: var(--danger); background: transparent; }
.btn-danger:hover { background: rgba(248, 81, 73, 0.1); }
.btn-secondary { border-color: var(--border-light); }
.btn-small { padding: 4px 10px; font-size: 12px; }
.btn-full { width: 100%; }

/* Inputs */
input[type="text"], input[type="password"], input[type="number"],
textarea, select, .input-select {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
    padding: 8px 12px;
    font-size: 13px;
    font-family: var(--font-ui);
    width: 100%;
    transition: border-color 0.15s;
}
input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--accent);
}
.input-title {
    font-size: 18px;
    font-weight: 600;
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--border);
    border-radius: 0;
    padding: 4px 0;
}
.input-title:focus { border-color: var(--accent); }
.input-select { width: auto; padding: 6px 12px; }

/* Dashboard */
.dashboard {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
}
.dash-card {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.2s;
    position: relative;
}
.dash-card:hover { border-color: var(--accent); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.3); }
.dash-icon { font-size: 32px; margin-bottom: 12px; }
.dash-card h3 { font-size: 16px; margin-bottom: 6px; }
.dash-card p { font-size: 12px; color: var(--text-secondary); }
.dash-count {
    position: absolute;
    top: 16px;
    right: 16px;
    background: var(--accent-glow);
    color: var(--accent);
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 13px;
    font-weight: 600;
}

/* Content Split */
.content-split {
    display: flex;
    gap: 20px;
    height: calc(100vh - 120px);
}
.list-panel {
    width: 280px;
    flex-shrink: 0;
    overflow-y: auto;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 8px;
}
.detail-panel {
    flex: 1;
    overflow-y: auto;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 20px;
}

.list-item {
    padding: 10px 12px;
    border-radius: 6px;
    cursor: pointer;
    margin-bottom: 4px;
    transition: background 0.1s;
}
.list-item:hover { background: var(--bg-hover); }
.list-item.active { background: var(--accent-glow); border-left: 3px solid var(--accent); }
.list-item .item-name { font-size: 13px; font-weight: 500; }
.list-item .item-role { font-size: 11px; color: var(--text-muted); text-transform: uppercase; }
.list-empty { text-align: center; color: var(--text-muted); padding: 24px; font-size: 13px; }

/* Detail */
.detail-header { display: flex; gap: 12px; align-items: center; margin-bottom: 20px; }
.detail-header .input-title { flex: 1; }
.detail-body { display: flex; flex-direction: column; gap: 16px; }
.detail-actions { display: flex; gap: 8px; margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--border); }

.field-group label {
    display: block;
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
}

/* Stats Grid */
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.stat-row { display: flex; align-items: center; gap: 8px; }
.stat-row span { font-size: 11px; font-weight: 700; color: var(--accent); width: 30px; }
.stat-row input { width: 60px; text-align: center; padding: 4px; }

/* Relationships */
.rel-list { display: flex; flex-direction: column; gap: 6px; margin-bottom: 8px; }
.rel-item {
    display: flex;
    gap: 8px;
    align-items: center;
    background: var(--bg-tertiary);
    padding: 6px 10px;
    border-radius: 6px;
}
.rel-item input { flex: 1; background: transparent; border: none; color: var(--text-primary); padding: 2px; }
.rel-item input:focus { outline: none; border-bottom: 1px solid var(--accent); }
.rel-item .btn-remove { background: none; border: none; color: var(--danger); cursor: pointer; font-size: 16px; padding: 0 4px; }

/* Dialog Workspace */
.dialog-workspace {
    display: flex;
    height: calc(100vh - 120px);
    gap: 16px;
}
.dialog-canvas {
    flex: 1;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    position: relative;
    overflow: auto;
}
.node-editor {
    width: 300px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
    overflow-y: auto;
}
.node-editor h4 { margin-bottom: 12px; color: var(--accent); }

/* Guion */
.guion-workspace { display: flex; flex-direction: column; gap: 16px; }
.guion-header { display: flex; flex-direction: column; gap: 8px; }
.acts-container { display: flex; flex-direction: column; gap: 16px; }
.act-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
}
.act-card .act-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}
.act-card .act-title {
    font-size: 15px;
    font-weight: 600;
    background: transparent;
    border: none;
    color: var(--text-primary);
    padding: 4px 0;
    border-bottom: 1px solid transparent;
}
.act-card .act-title:focus { border-bottom-color: var(--accent); outline: none; }
.scenes-list { display: flex; flex-direction: column; gap: 8px; }
.scene-item {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 12px;
}
.scene-item input {
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-weight: 500;
    width: 100%;
    margin-bottom: 6px;
}
.scene-item input:focus { outline: none; border-bottom: 1px solid var(--accent); }
.scene-item textarea {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    width: 100%;
    resize: vertical;
    font-size: 12px;
}
.scene-item textarea:focus { outline: none; }
.guion-actions { display: flex; gap: 8px; }

/* Login */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: var(--bg-primary);
}
.login-container {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 40px;
    width: 360px;
}
.login-brand { text-align: center; margin-bottom: 24px; }
.login-brand h1 { font-size: 28px; color: var(--accent); letter-spacing: 3px; }
.login-brand span { font-size: 12px; color: var(--text-muted); }
.login-form { display: flex; flex-direction: column; gap: 16px; }
.login-error { background: rgba(248,81,73,0.1); border: 1px solid var(--danger); color: var(--danger); padding: 8px 12px; border-radius: 6px; font-size: 13px; }
.form-group { display: flex; flex-direction: column; gap: 4px; }
.form-group label { font-size: 12px; color: var(--text-secondary); }

/* Toast */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 12px 20px;
    color: var(--text-primary);
    font-size: 13px;
    z-index: 9999;
    animation: slideUp 0.3s ease;
}
.toast.success { border-color: var(--success); }
.toast.error { border-color: var(--danger); color: var(--danger); }
@keyframes slideUp { from { transform: translateY(20px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

/* Sprite Picker */
.sprite-picker { display: flex; align-items: center; gap: 8px; }
.sprite-picker input { flex: 1; }
.sprite-preview { width: 48px; height: 48px; image-rendering: pixelated; border: 1px solid var(--border); border-radius: 4px; background: var(--bg-tertiary); }
.sprite-modal {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.8); z-index: 9999;
    display: flex; align-items: center; justify-content: center;
}
.sprite-modal-content {
    background: var(--bg-secondary); border: 1px solid var(--border);
    border-radius: 12px; padding: 24px; max-width: 600px; width: 90%; max-height: 80vh; overflow-y: auto;
}
.sprite-modal-content h3 { margin-bottom: 16px; color: var(--accent); }
.sprite-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(100px, 1fr)); gap: 12px; margin-bottom: 16px; }
.sprite-option {
    background: var(--bg-tertiary); border: 1px solid var(--border);
    border-radius: 8px; padding: 8px; text-align: center; cursor: pointer; transition: all 0.15s;
}
.sprite-option:hover { border-color: var(--accent); transform: scale(1.05); }
.sprite-option img { width: 64px; height: 64px; image-rendering: pixelated; display: block; margin: 0 auto 6px; }
.sprite-option span { font-size: 10px; color: var(--text-muted); word-break: break-all; }

/* Music Ref */
.music-ref {
    margin-top: 12px; padding: 8px 12px;
    background: var(--bg-tertiary); border: 1px solid var(--border); border-radius: 6px;
    font-size: 13px; display: flex; align-items: center; gap: 8px;
}
.music-label { color: var(--text-muted); font-size: 11px; text-transform: uppercase; }

/* Projects Grid */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 16px;
}
.project-card { cursor: pointer; }

/* Export Section */
.export-section {
    margin-top: 32px; padding: 24px;
    background: var(--bg-elevated); border: 1px solid var(--border); border-radius: 12px;
}
.export-section h3 { margin-bottom: 8px; }
.export-section p { font-size: 13px; color: var(--text-secondary); margin-bottom: 16px; }

/* Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-light); }