:root{--primary: #4f46e5;--primary-hover: #4338ca;--bg-main: #f8fafc;--bg-sidebar: #1e293b;--text-main: #0f172a;--text-muted: #64748b;--text-sidebar: #f1f5f9;--border: #e2e8f0;--card-bg: #ffffff;--accent: #0ea5e9;--success: #10b981;--warning: #f59e0b;--error: #ef4444;--shadow: 0 1px 3px 0 rgb(0 0 0 / .1), 0 1px 2px -1px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1)}.dark{--bg-main: #0f172a;--text-main: #f1f5f9;--text-muted: #94a3b8;--border: #334155;--card-bg: #1e293b}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background-color:var(--bg-main);color:var(--text-main);transition:background-color .3s ease,color .3s ease;overflow-x:hidden}.app-container{display:grid;grid-template-columns:260px 1fr;min-height:100vh}.sidebar{background-color:var(--bg-sidebar);color:var(--text-sidebar);padding:1.5rem;display:flex;flex-direction:column;gap:2rem;border-right:1px solid var(--border)}.logo-section{display:flex;align-items:center;gap:.75rem;font-weight:700;font-size:1.25rem;margin-bottom:1rem}.logo-placeholder{width:32px;height:32px;background:linear-gradient(135deg,var(--primary),var(--accent));border-radius:6px}.nav-links{display:flex;flex-direction:column;gap:.5rem}.nav-item{display:flex;align-items:center;gap:.75rem;padding:.75rem;border-radius:8px;cursor:pointer;transition:all .2s;color:var(--text-sidebar);opacity:.8;text-decoration:none}.nav-item:hover{background-color:#ffffff1a;opacity:1}.nav-item.active{background-color:var(--primary);opacity:1;box-shadow:var(--shadow)}.main-content{display:flex;flex-direction:column;height:100vh;overflow-y:auto}.header{height:64px;background-color:var(--card-bg);border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 2rem;position:sticky;top:0;z-index:10}.header-title{font-size:1.25rem;font-weight:600}.workspace{padding:2rem;max-width:1200px;margin:0 auto;width:100%}.card{background-color:var(--card-bg);border:1px solid var(--border);border-radius:12px;padding:1.5rem;box-shadow:var(--shadow)}.btn{padding:.625rem 1.25rem;border-radius:8px;font-weight:500;cursor:pointer;border:none;transition:all .2s;display:inline-flex;align-items:center;gap:.5rem;font-family:inherit}.btn-primary{background-color:var(--primary);color:#fff}.btn-primary:hover{background-color:var(--primary-hover)}.btn-secondary{background-color:transparent;border:1px solid var(--border);color:var(--text-main)}.btn-secondary:hover{background-color:var(--bg-main)}.input{width:100%;padding:.75rem;border-radius:8px;border:1px solid var(--border);background-color:var(--card-bg);color:var(--text-main);font-family:inherit}.input:focus{outline:2px solid var(--primary);border-color:transparent}@media (max-width: 1024px){.app-container{grid-template-columns:1fr}.sidebar{display:none}}