:root{--brand-color: #0d9488;--bg: #f8fafc;--surface: #ffffff;--border: #e2e8f0;--text: #0f172a;--text-muted: #64748b;--shadow: 0 1px 3px rgba(0,0,0,.05), 0 1px 2px rgba(0,0,0,.06);--radius: 12px}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,system-ui,sans-serif;background:var(--bg);color:var(--text);font-size:14px;line-height:1.5}.loading,.error{display:flex;align-items:center;justify-content:center;height:100vh;color:var(--text-muted)}.error{color:#dc2626}.app{min-height:100vh;display:flex;flex-direction:column}.header{background:var(--surface);border-bottom:1px solid var(--border);padding:16px 32px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px}.header-brand{display:flex;align-items:center;gap:12px}.header-logo{width:36px;height:36px;border-radius:8px;background:var(--bg)}.header-title{font-weight:600;font-size:16px}.header-tagline{font-size:12px;color:var(--text-muted)}.header-meta{display:flex;align-items:center;gap:16px;font-size:13px}.instance-badge{background:var(--bg);border:1px solid var(--border);padding:4px 10px;border-radius:16px;font-size:11px;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted)}.instance-reference{color:var(--brand-color);border-color:var(--brand-color)}.instance-sub-tenant{color:#b45309;border-color:#fbbf24}.user-name{color:var(--text)}.logout-btn{background:none;border:1px solid var(--border);padding:6px 12px;border-radius:6px;cursor:pointer;font-size:13px}.logout-btn:hover{background:var(--bg)}.main{padding:32px;max-width:1400px;margin:0 auto;width:100%}.tile-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}.tile-grid-empty{text-align:center;color:var(--text-muted);padding:64px 0}.tile{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);text-decoration:none;color:inherit;display:flex;flex-direction:column;overflow:hidden;transition:transform .15s,box-shadow .15s}.tile:hover{transform:translateY(-2px);box-shadow:var(--shadow)}.tile-coming-soon,.tile-private{opacity:.7;cursor:default}.tile-coming-soon:hover,.tile-private:hover{transform:none;box-shadow:none}.tile-icon{height:120px;background:var(--bg);display:flex;align-items:center;justify-content:center;border-bottom:1px solid var(--border)}.tile-icon img{width:48px;height:48px}.tile-icon-placeholder{width:48px;height:48px;border:2px solid var(--border);border-radius:8px}.tile-body{padding:16px;flex:1;display:flex;flex-direction:column;gap:8px}.tile-header{display:flex;align-items:center;gap:8px}.tile-title{margin:0;font-size:15px;font-weight:600;flex:1}.tile-badge{font-size:10px;padding:2px 8px;border-radius:4px;text-transform:uppercase;letter-spacing:.05em;font-weight:600}.tile-badge-private{background:#fef2f2;color:#b91c1c}.tile-badge-soon{background:#fef3c7;color:#92400e}.tile-tags{display:flex;gap:6px;flex-wrap:wrap}.tile-tag{background:#dbeafe;color:#1e40af;font-size:11px;padding:2px 8px;border-radius:4px}.tile-description{margin:0;font-size:13px;color:var(--text-muted)}