:root{--color-bg: #ffffff;--color-bg-muted: #f6f7f9;--color-border: #e2e5ea;--color-text: #1f2430;--color-text-muted: #6b7280;--color-primary: #3b5bfd;--color-primary-hover: #2c46d6;--color-danger: #d64545;--color-warning: #b8860b;--radius: 6px;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Helvetica,Arial,sans-serif}*{box-sizing:border-box}html,body,#app{height:100%}body{margin:0;color:var(--color-text);background:var(--color-bg-muted);font-size:14px;line-height:1.5}a{color:var(--color-primary)}button{font:inherit;cursor:pointer}input,textarea,select{font:inherit}.btn{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:var(--radius);border:1px solid var(--color-border);background:#fff;color:var(--color-text)}.btn:hover{border-color:var(--color-primary)}.btn.primary{background:var(--color-primary);border-color:var(--color-primary);color:#fff}.btn.primary:hover{background:var(--color-primary-hover)}.btn.danger{color:var(--color-danger);border-color:var(--color-danger)}.btn:disabled{opacity:.5;cursor:not-allowed}.input{padding:6px 10px;border-radius:var(--radius);border:1px solid var(--color-border);width:100%;background:#fff;color:var(--color-text)}.card{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius);padding:16px}.muted{color:var(--color-text-muted)}.stack{display:flex;flex-direction:column;gap:12px}.row{display:flex;align-items:center;gap:8px}.error-text{color:var(--color-danger);font-size:13px}