*{box-sizing:border-box}:root{--bg-primary: #ffffff;--bg-secondary: #f6f8fb;--bg-tertiary: #f3f4f6;--text-primary: #1f2937;--text-secondary: #6b7280;--border-color: #e5e7eb;--nav-bg: #111827;--nav-text: #ffffff;--button-primary-bg: #2563eb;--button-primary-text: #ffffff;--button-secondary-bg: #e5e7eb;--button-secondary-text: #111827;color-scheme:light}[data-theme=dark]{--bg-primary: #0f172a;--bg-secondary: #0b1220;--bg-tertiary: #111c33;--text-primary: #e5e7eb;--text-secondary: #94a3b8;--border-color: rgba(148, 163, 184, .25);--nav-bg: #020617;--nav-text: #e5e7eb;--button-primary-bg: #3b82f6;--button-primary-text: #ffffff;--button-secondary-bg: #1e293b;--button-secondary-text: #e5e7eb;color-scheme:dark}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg-secondary);color:var(--text-primary)}a{color:inherit}.app-shell{min-height:100vh;display:flex;flex-direction:column}.top-nav{height:60px;background:var(--nav-bg);color:var(--nav-text);display:flex;align-items:center;justify-content:space-between;padding:0 16px}.menu{display:flex;gap:10px}.menu a{text-decoration:none;padding:8px 10px;border-radius:8px}.menu a.active{background:color-mix(in srgb,var(--nav-bg) 78%,white 22%)}.page{max-width:1100px;width:100%;margin:16px auto;padding:0 16px}.card{background:var(--bg-primary);border:1px solid var(--border-color);border-radius:12px;padding:16px}.button{border:0;border-radius:8px;padding:10px 14px;background:var(--button-primary-bg);color:var(--button-primary-text);cursor:pointer}.button.secondary{background:var(--button-secondary-bg);color:var(--button-secondary-text)}.input,.textarea{width:100%;border:1px solid var(--border-color);border-radius:8px;padding:10px;font:inherit;background:var(--bg-primary);color:var(--text-primary)}.textarea{min-height:120px}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}