* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --bg: #f8f9fa;
  --panel: #fff;
  --card: #f0f0f5;
  --accent: #6c63ff;
  --text: #333;
  --muted: #888;
  --http-color: #4361ee;
  --mysql-color: #0d9488;
  --gmail-color: #ea4335;
  --schedule-color: #7b2cbf;
  --builtin-color: #6c757d;
  --success: #4caf50;
  --warning: #ff9800;
  --error: #f44336;
  --border: #e0e0e0;
}
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; background: var(--bg); color: var(--text); height: 100vh; overflow: hidden; }
button { cursor: pointer; border: none; font-family: inherit; }
pre, code, textarea { font-family: 'Cascadia Code', 'Fira Code', 'Consolas', monospace; }

/* Layout */
.app { display: grid; grid-template-columns: 280px 1fr; grid-template-rows: 56px 1fr minmax(160px, auto); height: 100vh; }
.header { grid-column: 1 / -1; background: var(--panel); border-bottom: 1px solid var(--border); display: flex; align-items: center; padding: 0 20px; gap: 16px; }
.header h1 { font-size: 16px; font-weight: 600; color: var(--accent); }
.header select { background: var(--bg); color: var(--text); border: 1px solid var(--border); padding: 8px 12px; border-radius: 6px; font-size: 13px; min-width: 250px; }
.sidebar { background: var(--panel); border-right: 1px solid var(--border); overflow-y: auto; padding: 12px; }
.main { overflow-y: auto; padding: 24px; background: var(--bg); }
.dataflow { grid-column: 1 / -1; background: var(--panel); border-top: 1px solid var(--border); padding: 12px 20px; overflow-x: auto; }

/* Module cards in sidebar */
.module-card { display: flex; align-items: center; gap: 12px; padding: 10px 12px; border-radius: 8px; cursor: pointer; margin-bottom: 4px; transition: background 0.15s; }
.module-card:hover { background: #f5f5f8; }
.module-card.active { background: #6c63ff10; border-left: 3px solid var(--accent); }
.module-icon { width: 42px; height: 42px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 18px; flex-shrink: 0; border: 2px solid; }
.module-icon.http { background: var(--http-color)22; border-color: var(--http-color); color: var(--http-color); }
.module-icon.mysql { background: var(--mysql-color)22; border-color: var(--mysql-color); color: var(--mysql-color); }
.module-icon.gmail { background: var(--gmail-color)22; border-color: var(--gmail-color); color: var(--gmail-color); }
.module-icon.schedule { background: var(--schedule-color)22; border-color: var(--schedule-color); color: var(--schedule-color); }
.module-icon.builtin { background: var(--builtin-color)22; border-color: var(--builtin-color); color: var(--builtin-color); }
.module-icon.json { background: #F7DF1E22; border-color: #F7DF1E; color: #F7DF1E; }
.module-icon.variable { background: #6C757D22; border-color: #6C757D; color: #6C757D; }
.module-icon.slack { background: #4A154B22; border-color: #4A154B; color: #4A154B; }
.module-icon.sheets { background: #0F9D5822; border-color: #0F9D58; color: #0F9D58; }
.module-icon.airtable { background: #18BFFF22; border-color: #18BFFF; color: #18BFFF; }
.module-icon.router { background: #6C757D22; border-color: #6C757D; color: #6C757D; }
.module-icon.iterator { background: #8B5CF622; border-color: #8B5CF6; color: #8B5CF6; }
.module-icon.aggregator { background: #8B5CF622; border-color: #8B5CF6; color: #8B5CF6; }

/* Make.com Compatibility Badge */
.make-compat-badge { display: inline-flex; align-items: center; gap: 6px; padding: 4px 12px; border-radius: 12px; font-size: 11px; font-weight: 600; letter-spacing: 0.5px; white-space: nowrap; margin-left: 12px; }
.make-compat-badge.ready { background: #4ade8022; color: var(--success); border: 1px solid #4ade8044; }
.make-compat-badge.warnings { background: #fb923c22; color: var(--warning); border: 1px solid #fb923c44; }
.make-compat-badge.errors { background: #ef444422; color: var(--error); border: 1px solid #ef444444; }
.make-compat-icon { width: 8px; height: 8px; border-radius: 50%; }
.make-compat-badge.ready .make-compat-icon { background: var(--success); }
.make-compat-badge.warnings .make-compat-icon { background: var(--warning); }
.make-compat-badge.errors .make-compat-icon { background: var(--error); }
.module-badge.make-warning { background: var(--warning); }
.validation-tag-make { display: inline-block; font-size: 9px; font-weight: 700; letter-spacing: 1px; padding: 1px 5px; border-radius: 3px; background: #fb923c33; color: var(--warning); margin-right: 6px; }
.module-info { flex: 1; min-width: 0; }
.module-name { font-size: 13px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.module-type { font-size: 11px; color: var(--muted); }
.module-badge { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.module-badge.tested { background: var(--success); }
.module-badge.untested { background: #ddd; }

/* Main panel */
.empty-state { display: flex; flex-direction: column; align-items: center; justify-content: center; height: 100%; color: var(--muted); }
.empty-state .icon { font-size: 48px; margin-bottom: 12px; }
.detail-header { display: flex; align-items: center; gap: 16px; margin-bottom: 24px; }
.detail-header .module-icon { width: 56px; height: 56px; font-size: 24px; }
.detail-header h2 { font-size: 20px; }
.detail-header .type-badge { font-size: 12px; padding: 3px 10px; border-radius: 12px; background: var(--card); color: var(--muted); }

/* Config display */
.config-section { margin-bottom: 20px; }
.config-section h3 { font-size: 13px; text-transform: uppercase; letter-spacing: 1px; color: var(--muted); margin-bottom: 8px; }
.config-block { background: #f5f5f8; border: 1px solid var(--border); border-radius: 8px; padding: 16px; font-size: 13px; overflow-x: auto; }
.config-block pre { white-space: pre-wrap; word-break: break-all; line-height: 1.6; color: #555; }
.config-row { display: flex; gap: 8px; padding: 4px 0; border-bottom: 1px solid var(--border); }
.config-row:last-child { border-bottom: none; }
.config-label { color: var(--muted); min-width: 100px; font-size: 12px; }
.config-value { color: var(--text); word-break: break-all; }

/* Buttons */
.btn { padding: 10px 20px; border-radius: 6px; font-size: 13px; font-weight: 600; transition: opacity 0.15s; }
.btn:hover { opacity: 0.85; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-secondary { background: #fff; color: var(--text); border: 1px solid var(--border); }
.btn-success { background: var(--success); color: #000; }
.btn-group { display: flex; gap: 8px; margin: 16px 0; }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }
.btn .spinner { display: inline-block; width: 14px; height: 14px; border: 2px solid #fff4; border-top-color: #fff; border-radius: 50%; animation: spin 0.6s linear infinite; margin-right: 6px; }
@keyframes spin { to { transform: rotate(360deg); } }

/* Results panel */
.results { margin-top: 20px; }
.results-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.results-header h3 { font-size: 13px; text-transform: uppercase; letter-spacing: 1px; color: var(--muted); }
.result-status { font-size: 12px; padding: 3px 10px; border-radius: 12px; }
.result-status.success { background: var(--success)22; color: var(--success); }
.result-status.error { background: var(--error)22; color: var(--error); }
.result-body { background: #f5f5f8; border: 1px solid var(--border); border-radius: 8px; padding: 16px; max-height: 400px; overflow: auto; }
.result-body pre { font-size: 12px; line-height: 1.5; color: #555; }
.result-timing { font-size: 11px; color: var(--muted); margin-top: 8px; }

/* MySQL manual mode */
.manual-mode { background: var(--card); border-radius: 8px; padding: 20px; margin-top: 16px; }
.manual-mode h4 { color: var(--warning); margin-bottom: 8px; }
.manual-mode p { font-size: 13px; color: var(--muted); margin-bottom: 12px; }
.manual-mode textarea { width: 100%; min-height: 120px; background: #fff; color: var(--text); border: 1px solid var(--border); border-radius: 6px; padding: 12px; font-size: 12px; resize: vertical; }
.copy-btn { font-size: 11px; padding: 4px 10px; background: #fff; color: #666; border: 1px solid var(--border); border-radius: 4px; cursor: pointer; }
.copy-btn:hover { color: #333; background: #f5f5f5; }

/* Email preview */
.email-preview { background: #fff; color: #333; border-radius: 8px; overflow: hidden; margin-top: 16px; }
.email-preview-header { background: #f5f5f5; padding: 16px; border-bottom: 1px solid #ddd; }
.email-preview-header .field { font-size: 12px; color: #666; margin-bottom: 4px; }
.email-preview-header .field span { color: #333; font-weight: 500; }
.email-preview-header .subject { font-size: 16px; font-weight: 600; color: #111; margin-top: 8px; }
.email-preview-body { padding: 20px; font-size: 13px; line-height: 1.8; white-space: pre-wrap; font-family: monospace; }
.email-preview-banner { background: var(--warning); color: #000; text-align: center; padding: 6px; font-size: 12px; font-weight: 600; }

/* Data flow bar */
.dataflow h3 { font-size: 12px; text-transform: uppercase; letter-spacing: 1px; color: var(--muted); margin-bottom: 10px; }
.flow-nodes { display: flex; align-items: center; gap: 0; }
.flow-node { display: flex; align-items: center; gap: 0; }
.flow-circle { width: 36px; height: 36px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 11px; font-weight: 600; cursor: pointer; transition: transform 0.15s; }
.flow-circle:hover { transform: scale(1.15); }
.flow-circle.tested { border: 2px solid var(--success); color: var(--success); }
.flow-circle.untested { border: 2px solid #444; color: #666; }
.flow-arrow { width: 30px; height: 2px; background: #444; position: relative; }
.flow-arrow::after { content: ''; position: absolute; right: 0; top: -4px; border: 5px solid transparent; border-left: 6px solid #444; }
.flow-label { font-size: 9px; color: var(--muted); text-align: center; max-width: 60px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; margin-top: 4px; }